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U.S. Department of Health and Human Services

Medical Devices

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Patient Problem Code Hierarchy

Subset:Patient Problem/Medical Problem

  • Abortion C35221; FDA 1688
    • Abortion, Complete C50500; FDA 2212 - All products of conception are expelled and identified.
    • Abortion, Incomplete C50608; FDA 2213 - The uterus is not entirely emptied of its contents.
    • Abortion, Induced C50613; FDA 2214 - Abortion brought on intentionally.
    • Abortion, Missed C50652; FDA 2215 - Retention in uterus of an abortus that has been dead at least 4 weeks.
    • Miscarriage C34336; FDA 1962 - Loss of the products of conception from the uterus before the fetus is viable; spontaneous abortion.
  • Achalasia C50451; FDA 1692 - Failure of the smooth muscle fibers of the gastrointestinal tract to relax at any one point of junction of one part with another.
  • Acoustic Trauma C50453; FDA 1694
  • Adhesion(s) C54685; FDA 1695
  • Adult Respiratory Distress Syndrome C3353; FDA 1696
  • AIDS, Acquired Immunodeficiency Syndrome C2851; FDA 1684
  • Airway Obstruction C50456; FDA 1699
  • Alteration in Body Temperature C7941; FDA 2682
  • Ambulation Difficulties C50458; FDA 2544
  • Amnionitis C50459; FDA 2217 - Inflammation of the amnion.
  • Anaphylactoid C50410; FDA 2218
  • Anastomose, Failure To C50417; FDA 1028
  • Anemia C2869; FDA 1706
  • Anesthesia, insufficient, light or patchy C51220; FDA 1707
  • Aneurysm C26693; FDA 1708
  • Angina C51221; FDA 1710
  • Anxiety C26696; FDA 2328
  • Aortic Dissection C50461; FDA 2491
  • Apgar Score, Decreased Or Low C50416; FDA 1718
    • Decreased Apgar C50923; FDA 1805
  • Apheresis C15191; FDA 1719
  • Apicectomy C50824; FDA 2372
  • Apnea C26698; FDA 1720 - Cessation of breathing.
  • Arachnoiditis, Spinal C50749; FDA 2390 - A chronic adhesive arachnoiditis in the spinal arachnoid, with root and spinal cord symptoms similar to those caused by pressure from a tumor.
  • Arrhythmia C2881; FDA 1721
  • Arteriosclerosis C34398; FDA 1722
    • Atherosclerosis C35768; FDA 1728
  • Ascites C2885; FDA 2596
  • Aspiration C28245; FDA 1725
  • Asthma C28397; FDA 1726
  • Atrial Fibrillation C50466; FDA 1729 - An arrhythmia in which minute areas of the atrial myocardium are in various uncoordinated stages of depolarization and repolarization; instead of intermittently contracting, the atria quiver continuously in a chaotic pattern, causing a totally irregular, often rapid ventricular rate.
  • Atrial Flutter C51224; FDA 1730
  • Atrial Perforation C50467; FDA 2511
  • Atrial Tachycardia C35481; FDA 1731
  • Autoimmune Disease C2889; FDA 1732
    • Dermatomyositis C26744; FDA 2253
    • Lupus C27153; FDA 1956
    • Scleroderma C26746; FDA 2062
    • Sjogren's Syndrome C26883; FDA 2073
  • Autoimmune reaction C16313; FDA 1733
  • Biliary Cirrhosis C51225; FDA 1736
  • Blinking, Excessive C50551; FDA 2229
  • Blood Gas Measurements, Abnormal C50447; FDA 1034
  • Blood loss C50470; FDA 2597
    • Exsanguination C50856; FDA 1841 - Extensive loss of blood due to internal or external hemorrhage.
  • Blurred vision C27123; FDA 2137
    • Halo C50806; FDA 2227 - Hazy ring around bright lights seen by some patients with refractive error or optical defects, e.g. cataracts, or corneal swelling.
  • Bradycardia C37920; FDA 1751
  • Brain Injury C50440; FDA 2219
    • Perinatal Brain Injury C73501; FDA 1852 - Injury occurring as a result of the delivery process.
    • Tentorial Tears C50844; FDA 2097 Pertaining to tears involving the tentorium of the cerebellum.
  • Breast Lumps C3197; FDA 2439
  • Breast Neoplasm C2910; FDA 2438
  • Bronchitis C2911; FDA 1752
  • Bronchospasm C34439; FDA 2598
  • Burning Sensation C50476; FDA 2146
  • Cancer C9305; FDA 3262
    • Cancer, Breast C4872; FDA 1759
    • Lymphoma, C3208; FDA 3263
      • Anaplastic Large Cell Lymphoma C3720; FDA 3264
  • Capsular Bag Tear, Posterior C50702; FDA 2639
  • Capsular Contracture C50478; FDA 1761
  • Cardiac Arrest C50479; FDA 1762 - Sudden cessation of the pumping function of the heart, with disappearance of arterial blood pressure, connoting either ventricular fibrillation or ventricular standstill.
  • Cardiac Perforation C73502; FDA 2513
  • Cardiac Tamponade C50481; FDA 2226 - Acute compression of the heart caused by increased intrapericardial pressure due to the collection of blood or fluid in the pericardium from rupture of the heart, penetrating trauma, or progressive effusion.
  • Cardiomyopathy C34830; FDA 1764
  • Cardiopulmonary Arrest C50483; FDA 1765 - Cessation of breathing and/or cardiac function.
  • Cataract C26713; FDA 1766
    • Cataract, Induced C50614; FDA 1767 - A cataract that has been produced artificially or by induction, e.g. as a result of device use, medication, trauma, tears, falls, accidental injury, etc.
  • Cephalohematoma C50484; FDA 2599 - A subperiosteal hemorrhage limited to the surface of one cranial bone, a usually benign condition seen in the newborn as a result of bone trauma.
  • Cerebrospinal Fluid Leakage C50487; FDA 1772
  • Cerebrovascular Accident C3390; FDA 1770
  • Cervical Changes C50488; FDA 1773 - Changes such as abnormal, pathological, benign, malignant, etc.
  • Chemical Exposure C36290; FDA 2570
  • Chest Tightness/Pressure C50491; FDA 2463
  • Chills C35143; FDA 2191
  • Chorioamnionitis C26720; FDA 1777
  • Chronic obstructive pulmonary disease, (COPD) C3199; FDA 2237
    • Emphysema, Pulmonary C3348; FDA 1832 - A condition of the lung characterized by increase beyond normal in the size of air spaces distal to the terminal bronchioles, either from dilatation of the alveoli or from destruction of their walls.
  • Claudication C50495; FDA 2550 - Limping or lameness.
  • Closed Capsulotomy C50834; FDA 2626
  • Clouding, Central Corneal C34455; FDA 2228 - Diffuse edema of the central region of the cornea, usually associated with the wearing of hard contact lenses, but may also occur in keratoconus.
  • Coagulopathy C2902; FDA 1779
    • Disseminated intravascular coagulation (DIC) C2992; FDA 1813 - A disorder characterized by reduction in the elements involved in blood coagulation due to their utilization in widespread blood clotting within the vessels.
  • Cognitive Changes C50457; FDA 2551 - Pertaining to or characterized by cognition. That operation of the mind which we become aware of objects of thought or perception; it includes all aspects of perceiving, thinking, or remembering.
  • Collapse C50497; FDA 2416
  • Coma C34497; FDA 2417
  • Complaint, Ill Defined C50499; FDA 2331
  • Complete Heart Block C50501; FDA 2627
  • Confusion/Disorientation C37928; FDA 2553
  • Congenital Defect/Deformity C2849; FDA 1782
    • Neonatal Deformities C50666; FDA 1974
    • Neonatal Hearing Impairment C50667; FDA 1975
    • Neonatal Hearing Loss C50668; FDA 1976
  • Congestive Heart Failure C3080; FDA 1783
  • Conjunctivitis C34504; FDA 1784
  • Connective Tissue Disease C26729; FDA 1786
  • Constipation C37930; FDA 3274
  • Convulsion, Clonic C50496; FDA 2222 - A convulsion marked by alternating contracting and relaxing of the muscles.
  • Convulsion, Tonic C50776; FDA 2223 - Prolonged contraction of the muscles, as the result of an epileptic discharge.
  • Cornea, Perforation Of C50692; FDA 1792
  • Corneal Abrasion C26730; FDA 1789
  • Corneal Decompensation C50507; FDA 1790 - Inability to maintain corneal integrity; or corneal edema resulting from failure of the corneal endothelium to maintain detumescence.
  • Corneal Haze C50509; FDA 1878
  • Corneal Infiltrates C50510; FDA 2231 - Discrete, small lesions present in the cornea as a result of corneal inflammation and, in some cases, after soft contact lens wear especially extended wear lenses.
  • Corneal Touch C50513; FDA 1794 - Complications of intraocular lens surgery; usually refers to intraocular lens contact with cornea, can be intermittent or chronic.
  • Corneal Ulcer C50515; FDA 1796 - Area of epithelial tissue loss from corneal surface; associated with inflammatory cells in the cornea and anterior chamber.
  • Cramp(s) C34827; FDA 2193
    • Abdominal Cramps C34331; FDA 2543
  • Cusp Tear C50517; FDA 2656
  • Cyanosis C26737; FDA 1798
  • Cyclitis C50519; FDA 1799 - Inflammation of the ciliary body.
  • Cyst(s), Formation Of C50520; FDA 1800
  • Cytomegaloviral Retinitis C50521; FDA 1957
  • Cytomegalovirus (CMV) C14196; FDA 2220
  • Death, Intrauterine Fetal C50620; FDA 1855 - Death in utero; failure of the product of conception to show evidence of respiration, heart beat, or definite movement of a voluntary muscle after expulsion from the uterus, with no possibility of resuscitation.
  • Death C28554; FDA 1802
    • Sudden Cardiac Death C50911; FDA 2510
  • Debris, Bone Shedding C50472; FDA 1803 - Shedding of accumulated bone fragments.
  • Dehiscence of organ C50527; FDA 2502
    • Wound Dehiscence C50863; FDA 1154 - Separation of the layers of a surgical wound; it may be partial and superficial only, or complete with disruption of all layers.
    • Zonular dehiscence C72898; FDA 2698
  • Dehydrated C26740; FDA 1807
  • Dementia C4786; FDA 1808
  • Deposits C9442; FDA 1809
    • Calcification C3672; FDA 1758
  • Depression C2982; FDA 2361
  • Detached retina C26874; FDA 2047
  • Device Fragments in Patient C62946; FDA 3165 - Issue associated with the inability to retrieve device and/or device fragments during medical procedures.
  • Diabetic Ketoacidosis C50530; FDA 2364 - A type of metabolic acidosis produced by accumulation of ketone bodies resulting from uncontrolled diabetes mellitus.
  • Diaphoretic C50403; FDA 2452 - Pertaining to or characterized by, or promoting diaphoresis; an agent that produces diaphoresis. (Diaphoresis is the act of perspiration, especially profuse perspiration).
  • Diarrhea C2987; FDA 1811
  • Difficulty Chewing C50492; FDA 2670
  • Disability C21007; FDA 2371
  • Disc Impingement C50707; FDA 2655
  • Discharge C50437; FDA 2225
  • Discomfort C50535; FDA 2330
  • Disfigurement C50536; FDA 2360
  • Dissection C61409; FDA 3160
  • Distention C50537; FDA 2601
  • Distress C37942; FDA 2329
  • Dizziness C37943; FDA 2194
  • Dry Eye(s) C34553; FDA 1814
  • Dyskinesia C50539; FDA 2363 - Difficulty moving; distortion or impairment of voluntary movement, as in tic, spasm, or myoclonus.
  • Dysphagia C2980; FDA 1815
  • Dysphasia C35546; FDA 2195
  • Dyspnea C2998; FDA 1816
  • Dysuria C2999; FDA 2684 - Difficulty or pain in urination.
  • Edema, macular C35468; FDA 1822
  • EKG/ECG Changes C50543; FDA 1817 - Changes in cardiac electrical activity.
  • Electric Shock C50541; FDA 2554
  • Electrocution C50544; FDA 1827 - The passage of electrical current through the body.
  • Electrolyte Imbalance C50545; FDA 2196 - Higher or lower than normal values for the serum electrolytes; usually affecting NA, K, CHL, CO2, glucose, bun.
  • Electro Mechanical Dissociation C50542; FDA 1826 - Continued electrical rhythmicity of the heart in the absence of effective mechanical function.
  • Embolism C26759; FDA 1829
    • Air Embolism C50455; FDA 1697 - The presence of bubbles of gas in the vascular system; occurrence is related to the entry of air into the venous circulation following trauma or surgery.
    • Pulmonary Embolism C50713; FDA 1498 - The closure of the pulmonary artery or one of its branches by an embolus, sometimes associated with infarction of the lung.
    • Thromboembolism C28195; FDA 2654
  • Embolus C50547; FDA 1830 - A mass of clotted blood or other formed elements, such as bubbles of air, calcium fragments, etc. brought by the blood from another vessel and forced into a smaller one, thus obstructing the circulation.
  • Emotional Changes C50489; FDA 1831
  • Encephalitis C26760; FDA 2429
  • Encephalopathy C26920; FDA 1833
    • Dementia, Dialysis C50531; FDA 2224 - A severe, often fatal encephalopathy which has been attributed to accumulation in the brain of aluminum from dialysate prepared with inadequately purified water.
  • Endocarditis C34582; FDA 1834
  • Endophthalmitis C34586; FDA 1835
  • Enzyme Elevation, Cardiac C50480; FDA 1838
  • Eructate C50550; FDA 1839 - To belch, the casting of upwind from the stomach.
  • Esophagus, Laceration(s) Of C50841; FDA 2398
  • Esophagus, Perforation Of C50693; FDA 2399
  • Exit Block C50553; FDA 2628
  • Cross patient exposure to body fluids C50505; FDA 1745 - The patient becomes contaminated from contact with blood/fluids on a device.
  • Extravasation C48198; FDA 1842 - A discharge or escape, as of blood, from a vessel into the tissues.
  • Extubate C50819; FDA 2402
  • Eye injury C34602; FDA 1845
    • Optical tissue, breakdown of C50475; FDA 2106
    • Retina, Damage To C50731; FDA 2048
      • Retina, Tear(s) In C50732; FDA 2050
  • Facial Nerve Paralysis C26769; FDA 1846
  • Fall C50558; FDA 1848
  • Fasciitis C50559; FDA 2375 - Inflammation of fascia.
  • Fatigue C3036; FDA 1849
    • Extreme Exhaustion C50556; FDA 1843 - Extreme fatigue; inability to respond to stimuli.
  • Feeding Problems C50560; FDA 1850
  • Fetal Distress C50563; FDA 1856
  • Fever C3038; FDA 1858
  • Fibromyositis C50566; FDA 1860 - Inflammation and fibrous degeneration of a muscle.
  • Fibrosis C3044; FDA 3167 The formation of fibrous tissue; fibroid or fibrous degeneration.
    • Scarring C34483; FDA 2061
      • Corneal Scar C50511; FDA 1793
  • First Use Syndrome C50532; FDA 2239 - A symptom complex characterized by nervousness, chest pain, back pain, palpations, pruritus, and other usually mild symptoms occurring minutes following the initiation of dialysis with a new dialyzer.
  • Fistula C3045; FDA 1862
  • Flashers C50568; FDA 1864 - A sudden or brief burst of light.
  • Flatus C50569; FDA 1865 - Gas or air in the gastrointestinal tract.
  • Fluid Discharge C34548; FDA 2686
    • Purulent Discharge C50717; FDA 1812 - Consisting of or containing pus; associated with the formation of or caused by pus.
  • Forced Expiratory Volume, Decreased C50524; FDA 2430 - A decrease in the fraction of the forced vital capacity that is exhaled in a specific number of seconds.
  • Forced Expiratory Volume, Increased C50609; FDA 2431 - An increase in the fraction of the forced vital capacity that is exhaled in a specific number of seconds.
  • Foreign Body Reaction C50444; FDA 1868 - A granulomatous inflammatory reaction evoked by the presence of an exogenous material in the tissues, a characteristic feature of which is the formation of foreign body giant cells.
    • Host Tissue Reaction C50586; FDA 1297 - Growth of tissue in or around a foreign body as the body's antibody response to the foreign body.
  • Foreign Body In Patient C34620; FDA 2687 - An occurrence where any object originating inside or outside the body is not in it's physiological or intended location. For example, a tooth or bone fragment being swallowed; or device’s components or fragments being found in the body away from where they were implanted.
    • Vessel Or Plaque, Device Embedded In C50647; FDA 1204 - Device and/or fragments of device are embedded in patient's vessel and/or plaque.
  • Foreign Body Sensation C50572; FDA 1869 - Feeling of grittiness or having something in the eye; frequently caused by a foreign body. Other possible causes include corneal abrasion, corneal ulcer, inturned eye lash or acute conjunctivitis.
  • Fracture(s) C3046; FDA 1870
    • Fracture, Arm C27783; FDA 2351
    • Fracture, Delayed Union C50529; FDA 2369
    • Fracture, Hip C26794; FDA 2349
    • Fracture, Skull C50745; FDA 2077
    • Fracture, Tooth C50777; FDA 2428
  • Fungus C14209; FDA 1872
  • Gangrene C50573; FDA 1873 - Death of tissue, usually in considerable mass and generally associated with loss of vascular (nutritive) supply and followed by bacterial invasion and putrefaction.
  • Gastritis C26780; FDA 1874
  • Glaucoma C26782; FDA 1875
  • Granuloma C3064; FDA 1876
  • Hair Loss C50575; FDA 1877
  • Head Injury C34660; FDA 1879
  • Headache C34661; FDA 1880
  • Headache, Lumbar Puncture C50643; FDA 2186 - Headache in erect position, after lumbar puncture; due to lowering of intracranial pressure by leakage of cerebrospinal fluid through the needle tract.
  • Healing, Impaired C50601; FDA 2378
  • Hearing Impairment C50576; FDA 1881
  • Hearing loss C35731; FDA 1882
    • Deafness C27644; FDA 1801
  • Heart Failure C50577; FDA 2206 - Inability of the heart to pump blood at an adequate rate to fill tissue metabolic requirements or the ability to do so only at an elevated filling pressure.
    • Left Ventricular Failure C50630; FDA 1948 - Failure of adequate output by the left ventricle despite an increase in distending pressure and in end diastolic volume, with dyspnea, orthopnea, and other signs and symptoms of pulmonary congestion and edema.
  • Heavier Menses C50578; FDA 2666
  • Hematoma C50579; FDA 1884 - A localized collection of blood, usually clotted, in an organ, space, or tissue, due to a break in the wall of a blood vessel.
  • Hematuria C3090; FDA 2558
  • Hemoconcentration C50580; FDA 1288 - An increase in the concentration of blood cells resulting from the loss of plasma or water from the blood stream.
  • Hemolysis C37965; FDA 1886
  • Hemolytic Anemia C34376; FDA 2279
  • Hemoptysis C3094; FDA 1887
  • Hemorrhage C26791; FDA 1888
    • Ecchymosis C26758; FDA 1818
    • Hemorrhage, Extradural C50555; FDA 1890 - Intracranial hemorrhage into the epidural space.
    • Hemorrhage, Subarachnoid C50757; FDA 1893 - Intracranial hemorrhage into the subarachnoid space.
    • Hemorrhage, Subdural C50759; FDA 1894 - Cerebral hemorrhage into the subdural space. See also Stroke Syndrome.
    • Hemorrhage, Subgaleal C50761; FDA 2603
    • Intermenstrual Bleeding C34818; FDA 2665
    • Intracranial hemorrhage C50438; FDA 1891 - Bleeding within the cranium.
      • Hemorrhage, cerebral C50485; FDA 1889 - Hemorrhage into the cerebrum. See also Stroke Syndrome.
        • Hemorrhage, Intraventricular C50896; FDA 1892
  • Hemostasis C50581; FDA 1895 - The arrest of bleeding, either by the physiological properties of vasoconstriction and coagulation or by surgical means.
  • Hemothorax C50582; FDA 1896 - A collection of blood in the pleural cavity.
  • Hepatitis C3095; FDA 1897
  • Hernia C34685; FDA 2240
  • Hiccups C37966; FDA 1899
  • HIV, Human Immunodeficiency Virus C14219; FDA 2197 - A cytopathic retrovirus. It is the etiological agent of AIDS.
  • Hot Flashes C3109; FDA 2153
  • Hydrocephalus C3111; FDA 3272
  • Hyperbilirubinemia C27088; FDA 1903 - Excessive concentrations of bilirubin in the blood, which may lead to jaundice.
  • Hyperemia C50588; FDA 1904 - The presence of an increased amount of blood in a part or organ; engorgement.
  • Hyperglycemia C26797; FDA 1905
  • Hypernatremia C37970; FDA 2242
  • Hyperplasia C3113; FDA 1906
  • Hypersensitivity C3114; FDA 1907 - Hypersensitivity; a local or general reaction of an organism following contact with a specific allergen to which it has been previously exposed and to which it has become sensitized.
  • Hypertension C3117; FDA 1908
  • Hyperthermia C50589; FDA 1909
  • Hyperventilation C50590; FDA 1910 - Abnormally prolonged, rapid, and deep breathing.
  • Hypervolemia C50591; FDA 2664
  • Hyphema C50592; FDA 1911 - Hemorrhage within the anterior chamber of the eye; bloodshot.
  • Hypoesthesia C50445; FDA 2352 - Consisting of abnormally decreased sensitivity, particularly to touch.
    • Hypoesthesia, Arm/Hand C50463; FDA 2353 - Consisting of abnormally decreased sensitivity, particularly to touch.
    • Hypoesthesia, Foot/Leg C50571; FDA 2354 - Consisting of abnormally decreased sensitivity, particularly to touch.
  • Hypoglycemia C3126; FDA 1912
  • Hypopyon C50593; FDA 1913 - An accumulation of pus in the anterior chamber of the eye.
  • Hypotension C3128; FDA 1914
  • Hypothermia C50523; FDA 1915 - Abnormally low body temperature.
  • Hypoventilation C50594; FDA 1916 - A state in which there is a reduced amount of air entering the pulmonary alveoli.
  • Hypovolemia C50595; FDA 2243 - Abnormally decreased volume of circulating fluid (plasma) in body.
  • Hypoxia C3890; FDA 1918
    • Anoxia C2876; FDA 1711
    • Asphyxia C50465; FDA 1851 - A condition due to lack of oxygen in respired air, resulting in impending or actual cessation of life.
    • Hypoxia in Utero C50564; FDA 2210 - Caused by conditions such as inadequate placental function (often abruptio placentae), preeclamptic toxicity, prolapse of the umbilical cord, or complications from anesthetic administration.
  • Iatrogenic Source C50598; FDA 2498
  • Idioventricular Rhythm C50599; FDA 1923 - Relating to or affecting the cardiac ventricles alone.
  • Immuno Deficiency C3131; FDA 2156 - A deficiency of immune response or a disorder characterized by deficient immune response.
  • Implant, Failure Of C50603; FDA 1924 - An object or material, such as an alloplastic or radioactive material or tissue, partially or totally inserted or grafted into the body for prosthetic, therapeutic, diagnostic, or experimental purposes.
    • Limited Mobility Of The Implanted Joint C50909; FDA 2671
  • Impotence C3133; FDA 1925
  • Inadequate Osteointegration C50914; FDA 2646
  • Incompetent Cervix C50607; FDA 1927 - One that is abnormally prone to dilate in the second trimester of pregnancy, resulting in premature expulsion of the fetus.
  • Incontinence C3429; FDA 1928
  • Infarction, cerebral C50486; FDA 1771 - An ischemic condition of the brain, producing a persistent focal neurological deficit in the area of distribution of the cerebral arteries.
  • Infection C26726; FDA 1930
    • Infection, Bacterial C2890; FDA 1735
      • Abscess C26686; FDA 1690
      • Cellulitis C26715; FDA 1768
      • Toxemia C50780; FDA 2207 - The condition resulting from the spread of bacterial products (toxins) by the bloodstream.
    • Infection, Direct C50534; FDA 2244 - Infection produced by direct contact with another person.
    • Infection, Fungal C3245; FDA 2419
    • Infection, Indirect C50612; FDA 2245 - Infection transmitted by water, food or other means of conveyance.
    • Infection, Intraocular C50617; FDA 1933 - Infection within the eye.
    • Infection, Pyrogenic C50719; FDA 2246 - An infection caused by pus producing organisms.
    • Infection, Subclinical C50758; FDA 2247 - Infection associated with no detectable symptoms but caused by microorganisms capable of producing easily recognizable diseases, such a poliomyelitis or mumps.
    • Infection, Upper Respiratory Tract C35650; FDA 2420
    • Infection, Urinary Tract C50791; FDA 2120
    • Infection, Viral C3439; FDA 2248
      • Herpes C50583; FDA 1898 - Any inflammatory skin disease caused by a herpesvirus and characterized by the formation of small vesicles in clusters.
    • Venereal Disease C3365; FDA 2071 - Any contagious disease acquired during sexual contact; e.g. syphilis, gonorrhea, chancroid.
  • Infiltration of tissue C25754; FDA 1931 - To penetrate a tissue or substance.
  • Inflammation C3137; FDA 1932
  • Injury C3671; FDA 2348
    • Abrasion C50449; FDA 1689 - Abraded wound; excoriation or circumscribed removal of the superficial layers of the skin or mucous membrane.
      • Suture Abrasion C50868; FDA 2497
    • Bruise C37921; FDA 1754
    • Burn(s) C34441; FDA 1757 - Injury to tissues caused by contact with dry heat, moist heat, flames, chemicals, electricity, friction or radiant and electromagnetic energy. A first degree burn is associated with redness, a second degree burn with vesication and a third degree burn with necrosis through the entire skin.
      • Burn, Bowel C50473; FDA 1756
      • Burn, Corneal C50506; FDA 2523
      • Burn, thermal C50768; FDA 2530
      • Caustic/Chemical Burns C34442; FDA 2549
      • First Degree Burn C76130; FDA 2685 - A burn that only affects the outer layer of skin causing pain, redness, and swelling
      • Lead(s), burn(s) from C61390; FDA 3161
      • Radiation burn C50722; FDA 1755 - A burn caused by exposure to x ray, radium, sunlight, atomic or any other type of radiant energy.
      • Second Degree Burn C76131; FDA 2694 - A partial thickness burn that affects both the outer and underlying layer of skin causing pain, redness, swelling and blistering.
      • Third Degree Burn C76132; FDA 2696 - A full thickness burn that extends into deeper tissues causing white or blackened and charred skin that may be numb.
    • Choking C50494; FDA 2464
    • Concussion C50502; FDA 2192 - A violent jar or shock, or the condition which results from such an injury.
    • Contusion C50441; FDA 1787 - A bruise; an injury of a part without a break in the skin.
      • Liver Contusion C50853; FDA 1953 - Bruising of the liver.
      • Myocardial Contusion C50661; FDA 1763 - A bruise to the heart.
    • Crushing Injury C35375; FDA 1797
    • Laceration(s) C50446; FDA 1946
    • Ligament(s), Damage To C50633; FDA 1952
    • Nervous System Injury C4974; FDA 2689
      • Spinal Cord Injury C50750; FDA 2432
    • Perforation C4080; FDA 2001
      • Bowel Perforation C39611; FDA 2668
      • Organ(s), Perforation Of C50679; FDA 1987
      • Sinus, Perforation Of C50741; FDA 2277
      • Uterine Perforation C50793; FDA 2121
    • Physical Entrapment C50548; FDA 2327 - Patient becomes entangled or caught in a bed, particularly in side rails, or mattress, or head/foot boards.
    • Rupture C9445; FDA 2208
    • Shock, Acoustic C50452; FDA 1693
    • Spinal Injury C50751; FDA 2081
    • Sprain C35035; FDA 2083
    • Strangulation C50756; FDA 2084 - Chocking or arrest of respiration due to occlusion of the air passageway; arrest of circulation in a part due to compression.
    • Tissue Damage C50773; FDA 2104
      • Tissue Breakdown C61375; FDA 2681
        • Erosion C50443; FDA 1750 - An eating away or breakdown of any type of external or internal human tissue including but not limited to skin, teeth, mucosa, or somatic, which involves only the outer tissue layer. When tissue surrounds an implanted device, the tissue breakdown may result in migration and loss of the implant material and may result in further complications such as infection or abscess.
          • Pocket Erosion C50699; FDA 2013 - Erosion of patient's skin pocket which houses a device.
          • Skin Erosion C50845; FDA 2075 - A gradual breakdown or very shallow ulceration of the skin which involves only the epidermis and heals without scarring.
    • Toxicity C27990; FDA 2333
    • Ulcer C3426; FDA 2274
      • Pressure Sores/Ulcers C50706; FDA 2326 - Death of tissue due to external pressure.
    • Vaginal Mucosa Damage C50522; FDA 2124
  • Insufficiency, Valvular C50796; FDA 1926 - Dysfunction of one of the cardiac valves, with incomplete valve closure resulting in valvular regurgitation.
    • Aortic insufficiency C51223; FDA 1715
      • Aortic Regurgitation C50861; FDA 1716 - The backward flow of blood from the aorta into the left ventricle, owing to insufficiency of the aortic semi-lunar valve; it may be chronic or acute.
    • Mitral Insufficiency C50888; FDA 1963
      • Mitral Regurgitation C50852; FDA 1964 - The backward flow of blood from the left ventricle into the left atrium, owing to insufficiency of the mitral valve; it may be acute or chronic, usually due to mitral valve prolapse, rheumatic heart disease or a complication of cardiac dilatation.
    • Regurgitation, Valvular C50797; FDA 2335 - Regurgitation of the blood of the heart valves owning to imperfect closing, insufficiency or incompetency of the valves.
    • Tricuspid Insufficiency C50842; FDA 2111 - Incomplete closure of the tricuspid valve, resulting in tricuspid regurgitation; it is usually secondary to systolic overload in the right ventricle.
      • Tricuspid Regurgitation C50843; FDA 2112 - The backflow of blood from the right ventricle into the right atrium, owning to imperfect functioning/insufficiency of the tricuspid valve.
  • Intimal Dissection C50616; FDA 1333 - Pertaining to the inner layer of the blood vessels.
  • Intraocular Pressure, Delayed, Uncontrolled C50786; FDA 1936 - Changes in the fluid pressure inside the eye.
  • Intraocular Pressure Rise C50618; FDA 1937 - Increase of pressure of the intraocular fluid in the eye.
  • Iritis C50621; FDA 1940 - Inflammation of the iris.
  • Irritability C50623; FDA 2421
  • Irritation C50624; FDA 1941
    • Skin Irritation C50743; FDA 2076
    • Wheal(s) C50811; FDA 2241 - A smooth, slightly elevated area on the body surface, which is redder or paler than the surrounding skin. It is the typical lesion of urticaria, the dermal evidence of allergy, and in sensitive persons may be provoked by mechanical irritation of the skin.
  • Ischemia C34738; FDA 1942
  • Ischemic Heart Disease C50625; FDA 2493
  • Itching C3344; FDA 1943
  • Jaundice C3143; FDA 2187
  • Joint Disorder C35760; FDA 2373
    • Arthritis C2883; FDA 1723
      • Arthritis, Rheumatoid C2884; FDA 1724
    • Joint Dislocation C26750; FDA 2374
    • Joint Swelling C50627; FDA 2356
  • Keratitis C26805; FDA 1944
    • Keratitis, Acanthamoeba C50450; FDA 1945 - Keratitis due to infection by acanthamoeba; it is usually associated with soft contact lens wear, particularly overnight wear.
  • Labor, Premature C50917; FDA 2465 - Ouster of a viable infant before the normal end of gestation, commonly defined as interruption of pregnancy between the twentieth thirty seventh completed weeks after the onset of the last menstrual cycle.
  • Left Ventricular Dysfunction C50629; FDA 1947
  • Left Ventricular Hypertrophy C50631; FDA 1949 - Enlargement or overgrowth of the myocardium of the left ventricle, due to chronic pressure overload.
  • Lethargic C50412; FDA 2560
  • Liver Dysfunction C50634; FDA 1954
  • Liver Laceration(s) C50854; FDA 1955
  • Loss of consciousness C50635; FDA 2418
    • Fainting C50857; FDA 1847 - Extremely weak; threatened with syncope.
  • Loss of pulse C50636; FDA 2562
  • Low Cardiac Output C50641; FDA 2501
  • Lung, Overinflation Of C50644; FDA 2397
  • Malaise C3832; FDA 2359
  • Mammogram, Abnormal C50431; FDA 2370
  • Mediastinal Shift C50645; FDA 2198 - Normal location of the mediastinum changes to the right or left, depending upon the underlying cause.
  • Memory Loss C2867; FDA 1958
  • Meningitis C26828; FDA 2389
  • Menstrual Irregularities C35219; FDA 1959 - Deviations from the normal process; e.g. delayed, difficult, profuse, scanty, unusual bleeding, etc.
  • Microcysts, Epithelial C50549; FDA 2232 - Very small, round vesicles containing fluid and cellular debris observed on the surface of the cornea under slit lamp examination in some types of corneal dystrophy and in wearers of extended wear lenses.
  • Micturation Urgency C50792; FDA 1871 - A sudden compelling urge to urinate.
  • Misdiagnosis C50432; FDA 2159
  • Missed Dose C50429; FDA 2561
  • Mitral Perforation C50653; FDA 2512
  • Multiple Organ Failure C75568 FDA 3261 - A progressive condition usually characterized by combined failure of the lungs, liver, kidney, and clotting mechanisms.
  • Muscle Spasm(s) C50656; FDA 1966 - A sudden, violent, involuntary contraction of a muscle or group of muscles.
  • Muscle Stimulation C50657; FDA 1412
  • Muscle Weakness C50658; FDA 1967
  • Muscular Rigidity C50659; FDA 1968 - Stiffness or inflexibility.
  • Muscular Tics C50660; FDA 2161 - An involuntary, compulsive, repetitive stereotyped movement, usually of the face or shoulders.
  • Myocardial Infarction C27996; FDA 1969 - Gross necrosis of the myocardium, as a result of interruption of the blood supply to the area, as in coronary thrombosis.
  • Myocarditis C34831; FDA 2470
  • Nausea C3258; FDA 1970
  • Necrosis C16897; FDA 1971
  • Necrosis Of Flap Tissue C50567; FDA 1972
  • Needle Stick/Puncture C50665; FDA 2462
  • Neovascularization C16900; FDA 1978
  • Nerve Damage C50669; FDA 1979
    • Optical Nerve Damage C50849; FDA 1986
  • Nerve Proximity NOS (Not Otherwise Specified) C50915; FDA 2647
  • Nerve Stimulation, Undesired C50787; FDA 1980
  • Neurological Deficit/Dysfunction C50672; FDA 1982
  • Neuropathy C4731; FDA 1983
  • Nipple Sensation, Changes In/Loss Of C50673; FDA 2162
  • Nipple Ulceration C50674; FDA 2441
  • No Consequences Or Impact To Patient C50675; FDA 2199
  • No Patient Involvement C50912; FDA 2645
  • Nonpyrogenic C50405; FDA 2250
  • Numbness C34857; FDA 2415
  • Obstruction C3284; FDA 2422
    • Nasal Obstruction C50662; FDA 2466
    • Occlusion C50678; FDA 1984 - The act of closure or the state of being closed; an obstruction; the relationship between all of the components of the masticatory system in normal function, dysfunction, and parafunction; momentary complete closure of some area in the vocal tract, causing stoppage of the breath and accumulation of pressure.
  • Ossification C50680; FDA 1428 - The formation of bone or of a bony substance; the conversion of fibrous tissue or of cartilage into bone or a bony substance.
  • Osteolysis C50681; FDA 2377 - Dissolution of bone; applied especially to the removal or loss of the calcium of bone.
  • Osteopenia C50910; FDA 2651
  • Overdose C50873; FDA 1988
    • Radiation Overdose C50862; FDA 1510
  • Oversedated C50850; FDA 1990
  • Overstimulation C50683; FDA 1991
  • Overwear Syndrome C50504; FDA 2234 - Ocular pain which may be very intense, accompanied by corneal epithelium damage, conjunctival injection, lacrimation, blepharospasm, photophobia and hazy vision following corneal edema caused by overwear of contact lenses, principally the PMMA type.
  • Oxygen Saturation, High C50584; FDA 2478 - The calculated measurements indicating the degree to which oxygen is bound to hemoglobin is high.
  • Oxygen Saturation, Low C50640; FDA 2477 - The calculated measurements indicating the degree to which oxygen is bound to hemoglobin is low.
  • Pain C3303; FDA 1994
    • Arthralgia C50464; FDA 2355 - Pain in a joint.
    • Chest Pain C38665; FDA 1776
    • Heartburn C34670; FDA 1883
    • Intraoperative Pain C50619; FDA 2662
    • Myalgia C27009; FDA 2238
    • Pain, Abdominal C26682; FDA 1685
    • Pain, Neck C50663; FDA 2433
  • Pain Relief, Inadequate C50605; FDA 2388
  • Pallor C50685; FDA 2468
  • Palpitations C37999; FDA 2467
  • Pannus Formation C50686; FDA 1447 - Superficial vascularization of the cornea with infiltration of granulation tissue; an inflammatory exudate overlying the lining layer of synovial cells on the inside of a joint.
  • Paralysis C3310; FDA 1997
    • Paresis C50688; FDA 1998 - A slight or incomplete paralysis.
  • Paraplegia C50687; FDA 2448 - Paralysis of the legs and lower part of the body.
  • Peak Expiratory Flowrate, Decreased C50525; FDA 2435 - A decrease of the greatest rate of flow that can be achieved during forced expiration beginning with the lungs fully inflated.
  • Peak Expiratory Flowrate, Increased C50610; FDA 2436 - An increase of the greatest rate of flow that can be achieved during forced expiration beginning with the lungs fully inflated.
  • Peeling C50691; FDA 1999 - A peeling off or loss of epidermis, as in sunburn, postscarlatinal peeling, or toxic epidermal necrolysis.
  • Pelvic Inflammatory Disease C3889; FDA 2000 - Any pelvic infection involving the upper female genital tract beyond the cervix.
  • Pericardial Effusion C3319; FDA 3271
  • Peripheral Vascular Disease C35136; FDA 2002
  • Peritoneal Laceration(s) C50695; FDA 2003
  • Peritonitis C26849; FDA 2252
  • Peroneal Nerve Palsy C27061; FDA 2362 - Paralysis of the nerves located in the legs.
  • Pharyngitis C26851; FDA 2367
  • Phlebitis C38003; FDA 2004
  • Phosphene Visualization C50697; FDA 2164 - An objective visual sensation that appears with the eyes closed and in the absence of visual light.
  • Phototoxicity C50698; FDA 2165 - A nonimmunologic, chemically induced type of photosensitivity.
  • Pleomorphism C17000; FDA 2009
  • Pleural Effusion C3331; FDA 2010
  • Pneumonia C3333; FDA 2011
    • Bronchopneumonia C26710; FDA 2437
  • Pneumothorax C38006; FDA 2012
  • Polydipsia C50700; FDA 2604 - Chronic excessive intake of water; it may be from an organic cause, such as the dehydration of diabetes mellitus, diabetes insipidus, or a reaction to medication, or from a psychological cause. When untreated it can lead to water intoxication.
  • Polymyositis C26925; FDA 1992
  • Positive antinuclear antibodies (ANA) C50701; FDA 2015 - Antibodies directed against nuclear antigens; almost invariably found in systemic lupus erythematosus and are frequently found in rheumatoid arthritis, scleroderma, Sjogren's Syndrome and mixed connective tissue disease.
  • Pregnancy C25742; FDA 3193 - The state or condition of having a developing embryo or fetus in the body (uterus), after union of an ovum and spermatozoon, during the period from conception to birth.
  • Pregnancy, Ectopic C34945; FDA 1819 - The state or condition of having a developing embryo or fetus in the body (outside the uterus), after union of an ovum and spermatozoon, during the period from conception to birth.
  • Prolapse C36173; FDA 2475
    • Mitral Valve Prolapse C50655; FDA 2471 - Prolapse of the mitral valve, often with regurgitation, associated with myxomatous proliferation of the leaflets of the mitral valve.
  • Pseudoaneurysm C50711; FDA 2605
  • Ptosis C27298; FDA 2620
  • Pulmonary Arterial Wedge Pressure, High C50585; FDA 2480 - The measurement of the mean left arterial pressure, as measured by a catheter introduced into the distal pulmonary artery, is high.
  • Pulmonary Arterial Wedge Pressure, Low C50642; FDA 2479 - The measurement of the mean left pulmonary arterial pressure, as measured by a catheter introduced into the distal pulmonary artery, is low.
  • Pulmonary Arterial Wedge Pressure, Normal C50677; FDA 2481 - The measurement of the mean left arterial pressure, as measured by a catheter introduced into the distal pulmonary artery, is normal.
  • Pulmonary Dysfunction C50712; FDA 2019
  • Pulmonary Edema C26868; FDA 2020
  • Pulmonary Infarction C50714; FDA 2021 - Localized necrosis of lung tissue caused by obstruction of the arterial blood supply, most often due to pulmonary embolism.
  • Pulmonary Insufficiency C51447; FDA 2022
  • Pulmonary Regurgitation C50848; FDA 2023 - The backflow of blood from the pulmonary artery into the right ventricle, owing to insufficiency of the pulmonic semilunar valve.
  • Pulse Pressure, Diminished C50533; FDA 2606
  • Pulse, Irregular C50622; FDA 2469 - A pulse that beats at irregular intervals.
  • Pupillary Block C50716; FDA 2026 - An obstruction of the pupil.
  • Quadriplegia C50721; FDA 2449 - Paralysis of all four limbs.
  • R on T phenomenon C61395; FDA 3163 - The occurrence of a premature ventricular complex near the peak of the T wave in electrocardiography; it may lead to ventricular tachycardia or fibrillation.
  • Radiation Exposure, Unintended C61401; FDA 3164
  • Radiation Sickness Syndrome C50723; FDA 2256 - Radiation induced skin desquamation
  • Range Of Motion, Loss Of C50637; FDA 2032
  • Rash C39594; FDA 2033
  • Raynauds Phenomenon C50724; FDA 2034 - Intermittent bilateral attacks of ischemia of the fingers or toes and sometimes of the ears or nose, marked by severe pallor, and often accompanied by paresthesia and pain.
  • Reaction C25637; FDA 2414
    • Antibiotics, reaction to C51222; FDA 1713
    • Decreased Sensitivity C73504; FDA 2683
    • Increased Sensitivity C73503; FDA 2065
    • Reaction, Injection Site C3508; FDA 2442
    • Reaction, Local C50419; FDA 2035
  • Red Eye(s) C50725; FDA 2038 - Lay term applied to any condition with dilation of conjunctival or ciliary blood vessels; innumerable causes, especially irritation and infection.
  • Regurgitation C50726; FDA 2259 - Flow in the opposite direction from normal, as the casting up of undigested food or gas from the stomach, or the backward flowing of blood into the heart, or between the chambers of the heart when a valve is incompetent.
  • Reinfusion C50820; FDA 2403
  • Renal Disease, End Stage C9439; FDA 2039 - Chronic, irreversible renal failure.
  • Renal failure C4376; FDA 2041
  • Reocclusion C50727; FDA 1985
  • Respiratory Acidosis C50728; FDA 2482 - A state due to excess retention of carbon dioxide in the body.
  • Respiratory Alkalosis C50729; FDA 2483 - A pathologic condition resulting from accumulation of base, or from loss of acid without comparable loss of base in the body fluids, and characterized by decrease in hydrogen ion concentration.
  • Respiratory Distress C27165; FDA 2045
  • Respiratory Distress Syndrome Of Newborns C27560; FDA 2046 - A condition of the newborn marked by dyspnea with cyanosis, most frequently occurring in premature infants, children of diabetic mothers and infants delivered by cesarean section, and sometimes with no predisposing cause.
  • Respiratory failure C26872; FDA 2484
  • Respiratory Rate, Decreased C50474; FDA 2485
  • Respiratory Rate, Increased C50767; FDA 2486
  • Retina, Degeneration Of C34979; FDA 2049
  • Rheumatic Heart Disease C34882; FDA 2053
  • Right Ventricular Dysfunction C50733; FDA 2054
    • Right Ventricular Failure C50846; FDA 2055 - Failure of proper functioning of the right ventricle, with venous engorgement, hepatic enlargement, and subcutaneous edema.
  • Right Ventricular Hypertrophy C50734; FDA 2056 - Enlargement or overgrowth of the myocardium of the right ventricle, due chronic pressure overload.
  • Scar Excision C50827; FDA 2358
  • Scar Tissue C50737; FDA 2060 - Formation of new tissue formed in the healing of a wound.
  • Sedation C21097; FDA 2368
  • Seizures C2962; FDA 2063
    • Seizures, Absence C50436; FDA 2261 - The seizure seen in absence epilepsy, consisting of a sudden momentary break in consciousness of thought or activity, often accompanied by automatisms or clonic movements, especially of the eyelids.
    • Seizures, Focal C50689; FDA 2260 - Partial seizure.
      • Seizures, Focal Motor C50847; FDA 2064 - A simple partial seizure consisting of clonus or spasm of a muscle or muscle group; it may be single or in a continuous and repetitive series or may spread to adjacent muscles.
    • Seizures, Grand Mal C50574; FDA 2168 - A symptomatic form of epilepsy often preceded by an aura; characterized by loss of consciousness with generalized tonic-clonic seizures.
  • Sepsis C3364; FDA 2067
  • Seroma C50739; FDA 2069 - A tumor like collection of serum in the tissues.
  • Shaking/Tremors C38038; FDA 2515
  • Shock C35016; FDA 2072
    • Lead(s), shock from C61392; FDA 3162
    • Shock, Anaphylactic C50460; FDA 1703 - Systemic anaphylaxis is the most dramatic example of an immediate hypersensitivity reaction; is uncommon and unexpected in nature and occasionally results in a fatal outcome.
    • Shock, Cardiogenic C50482; FDA 2262 - Shock resulting from primary failure of the heart in its pumping function, as in myocardial infarction, severe cardiomyopathy, or mechanical obstruction or compression of the heart.
    • Shock, Hypovolemic C50596; FDA 1917 - Shock resulting from insufficient blood volume for the maintenance of adequate cardiac output, blood pressure and tissue perfusion.
    • Shock, Insulin C50615; FDA 2264 - A hypoglycemic reaction to overdosage of insulin, a skipped meal, or strenuous exercise in an insulin dependent diabetic.
    • Shock, Neurogenic C50671; FDA 2265 - Shock resulting from neurogenic vasodilation, which can be produced by cerebral trauma or hemorrhage, spinal cord injury, deep general or spinal anesthesia, or toxic central nervous system depression.
    • Shock, septic C35018; FDA 2068
    • Shock, Surgical C35019; FDA 2267
      • Shock, Postoperative C50703; FDA 2266 - A state of shock following a surgical operation.
    • Shock, Traumatic C50782; FDA 2268 - Any shock produced by trauma.
  • Skin Discoloration C3327; FDA 2074
    • Erythema C26901; FDA 1840
  • Skin Inflammation C2983; FDA 2443
    • Radiodermatitis C3349; FDA 2255 - A cutaneous inflammatory reaction occurring as a result of exposure to biologically effective levels of ionizing radiation.
    • Urticaria C3432; FDA 2278 - Urticaria.
  • Skin Tears C50744; FDA 2516
  • Sleep Disturbances C3376; FDA 2517
  • Sneezing C50746; FDA 2251
  • Sore Throat C50747; FDA 2396
  • ST Segment Depression C41330; FDA 2487
  • ST Segment Elevation C50540; FDA 2059 - Evaluation of the interval from the end of ventricular depolarization to the onset of the T wave; it is usually isoelectric in normal subjects.
  • Stacking Breaths C50752; FDA 1593 - Condition where there are a greater number of inhalations relative to the number of exhalations.
  • Staphylococcus Aureus C50921; FDA 2058
  • Stenosis C50754; FDA 2263 - Narrowing or stricture of a duct or canal.
    • Valvular Stenosis C62433; FDA 2697
      • Aortic Stenosis C50462; FDA 1717 - Narrowing of the orifice of the aortic valve or of the supravalvular or subvalvular regions.
      • Mitral Stenosis C50654; FDA 1965 - Narrowing of the left atrio-ventricular mitral orifice.
      • Pulmonary Stenosis C50715; FDA 2024 - Narrowing of the opening between the pulmonary artery and the right ventricle, usually at the level of the valve leaflets.
      • Tricuspid Stenosis C50783; FDA 2113 - Narrowing or stricture of the tricuspid orifice of the heart.
  • Stiffness, Neck C50664; FDA 2434
  • Suffocation C50762; FDA 2088 - The stopping of respiration or the asphyxia that results from it.
  • Sunset Syndrome C50763; FDA 2089 - Decentration, or malposition of intraocular lens; zonular dehiscence or lens malposition caused by zonular or parsplana fixation.
  • Sweating C36172; FDA 2444
  • Swelling C3399; FDA 2091
    • Edema C3002; FDA 1820
      • Chemosis C50490; FDA 1775 - Excessive edema of the ocular conjunctiva.
      • Corneal Edema C50508; FDA 1791 - Hazy, swollen cornea.
        • Edema, Microcystic C50901; FDA 1823
        • Edema, Stromal C50859; FDA 1824 - Fluid from the aqueous humor enters the corneal stroma and causes swelling.
  • Swollen Glands C50764; FDA 2092
  • Swollen Lymph Nodes C50765; FDA 2093
  • Syncope C35053; FDA 1610
  • Synovitis C50766; FDA 2094 - Inflammation of a synovial membrane.
  • Tachycardia C38029; FDA 2095
  • Tearing, Excessive C50552; FDA 2235
  • Teeth, Sensitivity Of C50778; FDA 2427
  • Teratogenic Effects C50916; FDA 2273
  • Test Result C36292; FDA 2695
    • Patch test, abnormal results of C61389; FDA 3166
  • Therapeutic Effects, Unexpected C50789; FDA 2099
  • Therapeutic Response, Decreased C50526; FDA 2271
  • Therapeutic Response, Increased C50611; FDA 2272
  • Thrombosis C26891; FDA 2100
  • Thrombus C27083; FDA 2101 - An aggregation of blood factors, primarily platelets and fibrin with entrapment of cellular elements, frequently causing vascular obstruction at the point of its formation.
  • Thyroid Problems C50770; FDA 2102
  • Tingling C50771; FDA 2171 - A sensation as of repetitive pin pricks, caused by cold or by striking a nerve, or as a result of various diseases of the central or peripheral nervous system.
  • Tinnitus C50772; FDA 2103 A noise in the ears, such as ringing, buzzing, roaring, clicking.
  • Toxic Shock Syndrome C35498; FDA 2108 - A severe illness caused by infection with staphylococcus aureus and characterized by high fever of sudden onset, vomiting, diarrhea, and myalgia, followed by hypotension and in severe cases, shock; a sunburn like rash with peeling of the skin, especially of the palms and soles, occurs during the acute phase.
  • Toxins In Children C50493; FDA 2098 - Children affected by toxins may be due to silicone breast implants and their effects on unborn children and from breastfeeding.
  • Toxoplasmosis, Acquired C50454; FDA 2269 - Acquired as an adult.
  • Toxoplasmosis, Congenital C50503; FDA 2270 - Passed from mother to fetus.
  • Transient Ischemic Attack C50781; FDA 2109 - A brief attack (from a few minutes to an hour) of cerebral dysfunction of vascular origin, with no persistent neurological deficit.
  • Twiddlers Syndrome C50784; FDA 2114 - Dislodgement, breakdown, or other malfunction of an artificial cardiac pacemaker, chemotherapy port, drip infusion valve, or similar implanted diagnostic or therapeutic device as a result of unconscious or habitual manipulation by the patient.
  • Twitching C50785; FDA 2172 The occurrence of a single contraction or a series of contractions of a muscle.
  • UGH (Uveitis Glaucoma Hyphema) Syndrome C50794; FDA 2115 - For complications that occur secondary to intraocular lens implantation in the anterior chamber; caused by rubbing of the lens loop (haptics).
  • Ulceration C25757; FDA 2116
  • Underdose C50428; FDA 2542
    • Radiation Underdose C52354; FDA 2166
  • Uremia C34851; FDA 2188
  • Urinary Frequency C26906; FDA 2275
  • Urinary Retention C50790; FDA 2119 - Accumulation of urine within the bladder because of the inability to urinate.
  • Uveitis C26909; FDA 2122
  • Vaginal Discharge C50795; FDA 2123
  • Vascular System (Circulation), Impaired C50600; FDA 2572
  • Vasoconstriction C40866; FDA 2126
  • Vasodilatation C40867; FDA 2127 - A state of increased caliber of the blood vessels.
  • Vaso-Vagal Response C50798; FDA 2661
  • Venipuncture C28221; FDA 2129
  • Ventilator Dependent C50430; FDA 2395
  • Ventricle, Abnormality Of C50448; FDA 2078
    • Cerebral Ventriculomeglia C50803; FDA 2133
  • Ventricular Fibrillation C50799; FDA 2130 - Arrhythmia characterized by fibrillary contractions of the ventricular muscle due to rapid repetitive excitation of myocardial fibers without coordinated contraction of the ventricle.
  • Ventricular Tachycardia C50802; FDA 2132 - An abnormally rapid ventricular rhythm with aberrant ventricular excitation, usually in excess of 150 beats per minute.
    • Torsades De Pointes C50779; FDA 2107 - 'Fringe of pointed tips'; An atypical rapid ventricular tachycardia with periodic waxing and waning of amplitude of the QRS complexes on the electrogram as well as rotation of the complexes about the isoelectric line.
    • Ventricular Flutter C50800; FDA 2131 - A ventricular tachyarrhythmia characterized electrocardiographically by smooth undulating waves with QRS complexes merged with T waves, a rate of approximately 250 per minute.
  • Vertigo C38057; FDA 2134
  • Vessels, Perforation Of C50804; FDA 2135
    • Great Vessel Perforation C52352; FDA 2152
  • Virus C14283; FDA 2136
  • Vision, Impaired C50602; FDA 2138
  • Vision, Loss Of C50638; FDA 2139
  • Visual Disturbances C50805; FDA 2140
  • Vitrectomy C50837; FDA 2643
  • Vitreous floaters C50808; FDA 1866 - Spots before the eyes; deposits in the vitreous of the eye, usually moving about and probably representing fine aggregates of vitreous protein occurring as a benign degenerative change.
  • Vitreous Fluid, Blood In C50469; FDA 2143
  • Vitreous Fluid, Loss Of C50639; FDA 2142
  • Vitreous, Detachment Of C50807; FDA 2445
  • Vitritis C50587; FDA 2181 - Inflammatory intraocular reaction with clouding and cells in vitreous; often accompanies inflammation of ciliary body, iris, choroid, or retina.
  • Vomiting C3442; FDA 2144
  • Weakness C50809; FDA 2145
  • Weight Fluctuations C50810; FDA 2607
  • Wrinkling C50435; FDA 2613
  • Wound Infection, Post Operative C50704; FDA 2446
  • Wound Infection, Post Traumatic C50705; FDA 2447

Missing Value Reason - LEVEL 1

  • No Code Available C64343; FDA 3191
  • No Information C53269; FDA 3190
  • No known impact or consequence to patient C76143; FDA 2692
  • Not Applicable C48660; FDA 3189