2027 ICD-10-CM Diagnosis Code T50.905AAdverse effect of unspecified drugs, medicaments and biological substances, initial encounter

ICD-10-CM T50.905A

CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

T50.905A is a billable ICD-10-CM diagnosis code for adverse effect of unspecified drugs, medicaments and biological substances, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 791, 793, 917 through 918. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Adverse effects of drugs and medicaments, initial encounter.

Code Identity

ICD-10-CM Code

T50.905A

Billable Status

Yes — Valid for Submission

Code Describes

Adverse effect of unspecified drugs, medicaments and biological substances, initial encounter

Short Description

Adverse effect of unsp drug/meds/biol subst, init

Parent Code

T50.905

Adverse effect of unspecified drugs, medicaments and biological substances

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes

SectionT36-T50Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances

CategoryT50Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances

This CodeT50.905AAdverse effect of unspecified drugs, medicaments and biological substances, initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

Filter synonyms:

Abnormal drug tolerance
Abnormal hormone secretion
Abnormal movement
Abnormality of secretion of gastrin
Acanthosis nigricans
Acneiform drug eruption
Acneiform eruption
Acquired acanthosis nigricans
Acquired central hypothyroidism
Acquired coagulation factor inhibitor disorder
Acquired epidermolysis bullosa
Acquired long QT syndrome
Acquired thrombotic thrombocytopenic purpura
Acute akathisia caused by drug
Acute angle closure of left eye caused by drug
Acute angle closure of right eye caused by drug
Acute drug-induced gout
Acute drug-induced interstitial lung disorder
Acute drug-induced tubulointerstitial nephritis
Acute drug-induced ulcer of stomach
Acute dystonia caused by antipsychotic medication
Acute edema
Acute eosinophilic pneumonia caused by medication
Acute febrile neutrophilic dermatosis
Acute gastric erosion associated with drug ingestion
Acute gout
Acute hepatic failure
Acute hepatic failure due to drugs
Acute pulmonary edema
Acute toxic cicatrizing conjunctivitis
Acute toxic conjunctivitis
Acute tubulointerstitial nephritis
Adverse cutaneous reaction to volatile oil
Adverse drug interaction
Adverse drug interaction with dietary supplement
Adverse drug interaction with herbal supplement
Adverse drug interaction with over-the-counter medication
Adverse drug interaction with prescription medication
Adverse drug interaction with tobacco
Adverse medication interaction with medication
Adverse reaction caused by drug following provocation test
Adverse reaction following injection of substance
Adverse reaction to biological substance
Adverse reaction to drug
Adverse reaction to lipotropic drugs
Adverse reaction to oil
Adverse reaction to pharmaceutical excipient
Adverse reaction to substance applied to neonatal skin
Akathisia
Akathisia caused by drug
Allergic contact dermatitis caused by drug in contact with skin
Allergic disorder monitoring status
Allergic hepatitis
Allergic reaction after allergen immunotherapy
Allergic reaction due to allergy skin test
Allergic reaction to colophony
Allergic reaction to drug
Allergic sensitization
Allergic sensitization by patch test
Allergy drug side effect
Alopecia due to disturbance of hair cycle
Alveolar macrophage pneumonia
Alveolar macrophage pneumonia caused by medication
Anagen effluvium
Anagen effluvium caused by drug
Anaphylaxis after allergen immunotherapy
Anastomotic ulcer of stomach caused by drug
Androgen excess caused by drug
Androgen level above reference range
Anemia caused by medication
Anetoderma
Angle closure of left eye caused by drug
Angle closure of right eye caused by drug
Annular erythema
Annular erythema caused by drug
Aplasia cutis congenita due to teratogenic drug
Aseptic meningitis caused by drug
Aseptic peritonitis
Atrophy of skin caused by drug
Atypical fracture of femur
Autoimmune bullous dermatosis due to drug
Autonomic neuropathy due to diabetes mellitus
Autonomic neuropathy due to drug induced diabetes mellitus
Autonomic neuropathy due to medication induced hypoglycemia
Azoospermia caused by drug
B cell lymphocyte aplasia caused by drug
B-cell pseudolymphoma caused by drug
Benign intracranial hypertension
Benign intracranial hypertension due to drug
Benign mucous membrane pemphigoid
Benign mucous membrane pemphigoid with ocular involvement
Bilateral acute angle closure
Bilateral acute angle closure caused by drug
Bilateral angle closure caused by drug
Bilateral cataract of eyes caused by drug
Bilateral drug-induced ocular hypertension
Bilateral keratopathy caused by drug
Bilateral osteonecrosis of femurs caused by drug
Bilateral secondary angle closure glaucoma
Blistering of skin due to drug-induced coma
Blood disorder monitoring status
Blood drug side effect
Bronchiolocentric interstitial pneumonia
Bronchiolocentric interstitial pneumonia caused by medication
Bronchospasm
Bronchospasm caused by drug
Bullae and sweat gland necrosis in drug-induced coma
Bullous dermatosis precipitated by drug treatment
Bullous pemphigoid
Capillaritis caused by drug
Cardiomyopathy caused by drug
Cataract due to diabetes mellitus
Cataract due to drug induced diabetes mellitus
Cataract of left eye caused by medication
Cataract of right eye caused by medication
Central hypothyroidism
Central nervous system depression
Cheilitis medicamentosa
Chemical peritonitis
Chloramphenicol adverse reaction
Cholangiohepatitis
Cholestatic hepatitis
Cholestatic jaundice caused by drug
Cholestatic jaundice syndrome
Chorea due to tardive dyskinesia
Chronic bilateral vestibulopathy caused by ototoxic agent
Chronic cicatrizing conjunctivitis caused by drug
Chronic disease - drug side effects
Chronic drug-induced interstitial lung disorders
Chronic drug-induced renal disease
Chronic drug-induced tubulointerstitial nephritis
Chronic drug-induced ulcer of stomach
Chronic eosinophilic pneumonia caused by medication
Chronic follicular conjunctivitis caused by drug
Chronic gout caused by drug
Chronic gout of ankle and/or foot without tophus caused by drug
Chronic gout of elbow without tophus caused by drug
Chronic gout of hand without tophus caused by drug
Chronic gout of hip without tophus caused by drug
Chronic gout of knee without tophus caused by drug
Chronic gout of multiple sites without tophus caused by drug
Chronic gout of shoulder without tophus caused by drug
Chronic gout of vertebra without tophus caused by drug
Chronic gout of wrist without tophus caused by drug
Chronic gout without tophus caused by drug
Chronic gouty arthritis
Chronic kidney disease stage 1 due to drug induced diabetes mellitus
Chronic kidney disease stage 2 due to drug induced diabetes mellitus
Chronic kidney disease stage 3 due to drug induced diabetes mellitus
Chronic kidney disease stage 4 due to drug induced diabetes mellitus
Chronic kidney disease stage 5 due to drug induced diabetes mellitus
Chronic tophaceous gout caused by drug
Chronic tophaceous gout of ankle and/or foot caused by drug
Chronic tophaceous gout of elbow caused by drug
Chronic tophaceous gout of hand
Chronic tophaceous gout of hand caused by drug
Chronic tophaceous gout of hip caused by drug
Chronic tophaceous gout of knee caused by drug
Chronic tophaceous gout of multiple sites caused by drug
Chronic tophaceous gout of shoulder caused by drug
Chronic tophaceous gout of vertebra caused by drug
Chronic tophaceous gout of wrist caused by drug
Chronic toxic cicatrizing conjunctivitis
Chronic toxic interstitial nephritis
Cicatrizing conjunctivitis
Coital disorder
Color changes during tooth formation
Conjugated hyperbilirubinemia
Conjunctival adrenochrome deposits
Conjunctival deposit caused by drug
Conjunctivitis caused by drug
Constricted pupil
Contact dermatitis caused by medication
Cutaneous B-cell pseudolymphoma
Cutaneous inflammation due to cytotoxic therapy
Cutaneous T-cell pseudolymphoma
Cutaneous ulceration due to cytotoxic therapy
Cytopenia caused by drug
Dermatosis due to cytotoxic therapy
Diabetes mellitus induced by non-steroid drugs
Diarrhea caused by drug
Diffuse alopecia
Dilated cardiomyopathy caused by drug
Disorder of autonomic nervous system caused by drug
Disorder of ejaculation
Disorder of kidney due to drug induced diabetes mellitus
Disorder of nail color
Disorder of vision due to secondary diabetes mellitus
Disturbance of salivary secretion
Dizziness caused by drug
Dose-related drug-induced neutropenia
Drug exanthem
Drug induced acquired central hypothyroidism
Drug induced anal ulceration
Drug induced central sleep apnea
Drug induced dysfunction of vestibular system
Drug induced lacrimal canalicular stenosis
Drug induced pulmonary fibrosis
Drug induced thrombotic thrombocytopenic purpura
Drug induction of cytochrome p450 CYP1A2 enzyme
Drug induction of cytochrome p450 CYP2C19 enzyme
Drug induction of cytochrome p450 CYP2C9 enzyme
Drug induction of cytochrome p450 CYP3A enzyme
Drug inhibition of cytochrome p450 CYP1A2 enzyme
Drug inhibition of cytochrome p450 CYP2C19 enzyme
Drug inhibition of cytochrome p450 CYP2C9 enzyme
Drug inhibition of cytochrome p450 CYP2D6 enzyme
Drug inhibition of cytochrome p450 CYP3A enzyme
Drug interaction with drug
Drug interaction with tobacco
Drug pigmentation
Drug reaction AND/OR intoxication specific to newborn
Drug reaction with eosinophilia and systemic symptoms
Drug related visual impairment
Drug tolerance
Drug-aggravated angioedema-urticaria
Drug-exacerbated psoriasis
Drug-induced acanthosis nigricans
Drug-induced acute angle closure
Drug-induced acute cicatrizing conjunctivitis
Drug-induced acute dystonia
Drug-induced acute pancreatitis
Drug-induced acute pulmonary edema
Drug-induced adrenocortical insufficiency
Drug-induced adrenogenital disorder
Drug-induced anaphylaxis
Drug-induced androgenic alopecia
Drug-induced anetoderma
Drug-induced angioedema-urticaria
Drug-induced angle closure
Drug-induced angle closure glaucoma
Drug-induced angle closure glaucoma of bilateral eyes
Drug-induced angle closure glaucoma of left eye
Drug-induced angle closure glaucoma of right eye
Drug-induced apnea
Drug-induced asthma
Drug-induced autoimmune hemolytic anemia
Drug-induced autoimmune reaction
Drug-induced autonomic dysfunction
Drug-induced bradycardia
Drug-induced bronchiolitis obliterans
Drug-induced bullous pemphigoid
Drug-induced cataract
Drug-induced central nervous system depression
Drug-induced cerebellar ataxia
Drug-induced cholestatic hepatitis
Drug-induced chorea
Drug-induced chronic hepatitis
Drug-induced chronic pancreatitis
Drug-induced cicatricial pemphigoid
Drug-induced cirrhosis of liver
Drug-induced coagulation inhibitor disorder
Drug-induced colitis
Drug-induced coma
Drug-induced constipation
Drug-induced corneal epithelial deposit
Drug-induced cutis laxa
Drug-induced dermatomyositis
Drug-induced dermatosis
Drug-induced desquamation of skin
Drug-induced diabetes mellitus
Drug-induced disorder of cornea
Drug-induced disorder of liver
Drug-induced disorder of refraction AND/OR accommodation
Drug-induced dyskinesia
Drug-induced dyskinesia, acute onset
Drug-induced dystonia
Drug-induced embolism
Drug-induced encephalopathy
Drug-induced enteritis of intestine
Drug-induced enzyme deficiency anemia
Drug-induced eosinophilia
Drug-induced epidermolysis bullosa acquisita
Drug-induced epilepsy
Drug-induced erythema multiforme
Drug-induced erythromelalgia
Drug-induced feminization
Drug-induced fibrinolytic disorder
Drug-induced flushing
Drug-induced gingival hyperplasia
Drug-induced granulomatous mediastinitis
Drug-induced hair abnormality
Drug-induced hair color change
Drug-induced hepatic necrosis
Drug-induced hepatitis
Drug-induced hirsutism
Drug-induced hypergastrinemia
Drug-induced hyperglycemia
Drug-induced hyperhidrosis
Drug-induced hyperinsulinemia
Drug-induced hyperkalemia
Drug-induced hypermelanosis
Drug-induced hyperprolactinemia
Drug-induced hyperpyrexia
Drug-induced hypersomnia
Drug-induced hypertrichosis
Drug-induced hypocalcemia
Drug-induced hypoglycemia
Drug-induced hypoglycemia without coma
Drug-induced hypokalemia
Drug-induced hypomagnesemia
Drug-induced hypomelanosis
Drug-induced hyponatremia
Drug-induced hypoplasia of bone marrow
Drug-induced hypotension
Drug-induced ichthyosiform reaction
Drug-induced ileus
Drug-induced immune hemolytic anemia, hapten type
Drug-induced immune hemolytic anemia, immune complex type
Drug-induced immune-complex glomerulonephritis
Drug-induced immunodeficiency
Drug-induced interstitial lung disorder
Drug-induced intrahepatic cholestasis
Drug-induced keratoconjunctivitis
Drug-induced lesion
Drug-induced leukonychia
Drug-induced linear IgA disease
Drug-induced lupus erythematosus
Drug-induced lymphocytic vasculitis
Drug-induced male infertility
Drug-induced megacolon
Drug-induced melasma
Drug-induced membranous nephropathy
Drug-induced methemoglobinemia
Drug-induced mucositis
Drug-induced myasthenia
Drug-induced myoclonus
Drug-induced myopathy
Drug-induced nail abnormality
Drug-induced nail fragility
Drug-induced nail hypertrophy
Drug-induced necrotizing vasculitis
Drug-induced neutropenia
Drug-induced neutrophilia
Drug-induced non autoimmune hemolytic anemia
Drug-induced obesity
Drug-induced ocular hypertension
Drug-induced ocular hypertension of left eye
Drug-induced ocular hypertension of right eye
Drug-induced open angle glaucoma
Drug-induced open angle glaucoma of bilateral eyes
Drug-induced open angle glaucoma of left eye
Drug-induced open angle glaucoma of right eye
Drug-induced oral condition
Drug-induced oral lichenoid reaction
Drug-induced oral pigmentation
Drug-induced oral ulceration
Drug-induced orofacial dyskinesia
Drug-induced osteoporosis
Drug-induced osteoporosis with osteoporotic fracture
Drug-induced palmoplantar pustular psoriasis
Drug-induced panniculitis
Drug-induced pemphigus
Drug-induced pemphigus foliaceus
Drug-induced pemphigus vulgaris
Drug-induced peptic ulcer
Drug-induced pericarditis
Drug-induced persistent light reaction
Drug-induced pigmentation
Drug-induced pigmentation of cornea
Drug-induced pleural effusion
Drug-induced pleurisy
Drug-induced pneumonitis
Drug-induced polymyositis
Drug-induced porphyria
Drug-induced pseudoporphyria
Drug-induced pseudoscleroderma
Drug-induced pseudoxanthoma elasticum
Drug-induced purpura
Drug-induced Raynaud's phenomenon
Drug-induced retinopathy
Drug-induced sideroblastic anemia
Drug-induced solar urticaria
Drug-induced Stevens-Johnson syndrome
Drug-induced stricture of esophagus
Drug-induced systemic lupus erythematosus
Drug-induced tardive dystonia
Drug-induced telangiectasia
Drug-induced thyroiditis
Drug-induced tubulointerstitial nephritis
Drug-induced uveitis
Drug-induced virilization
Drug-induced xerostomia
Drug-related alopecia
Drug-related myocardial necrosis syndrome
Duodenal ulcer caused by drug
Duodenitis caused by drug
Dysfunction of vestibular system
Dysmotility of small intestine caused by drug
Effect of drug maladministration
Effects of immunotherapy
Emollient adverse reaction
Endocrine alopecia
Endocrine drug side effect
Enlargement of alveolar ridge
ENT disorder monitoring status
ENT drug side effect
Epidermal fragility
Eruption caused by drug
Erythema nodosum caused by drug
Erythroderma caused by drug
Erythromelalgia
Esophagitis medicamentosa
Exanthematous disorder
Excessive muscarinic activity
Exogenous pigmentation of oral mucosa
Extrinsic staining of teeth caused by drug
Factor IX inhibitor disorder
Factor V inhibitor disorder
Factor VIII inhibitor disorder
Falls
Falls caused by medication
Fat hypertrophy
Fat hypertrophy due to injection of drug or medicament
Feminization
Fixed drug eruption
Fixed drug reaction
Fixed drug reaction affecting oral mucous membranes
Folate deficiency anemia, drug-induced
Gastric erosion
Gastric ulcer caused by drug
Gastritis medicamentosa
Gastroenteritis caused by drug
Gastrointestinal disorder caused by drug
Generalized bullous fixed drug eruption
Generalized hypoplasia of enamel caused by ingestion of drug
Generalized rash
Generalized skin eruption caused by drug and medicament
Gingival disease caused by drug
Gingival enlargement exacerbated by drug
Gingivitis caused by drug
Gout of ankle and/or foot caused by drug
Gout of elbow caused by drug
Gout of hand caused by drug
Gout of hip caused by drug
Gout of knee caused by drug
Gout of multiple sites caused by drug
Gout of shoulder caused by drug
Gout of vertebra caused by drug
Gout of wrist caused by drug
Gout secondary to drug
Granulomatous mediastinitis
Gray syndrome from chloramphenicol administration in newborn
Gyne. drug side effect
Gynecologic disorder monitoring status
Hapten type high affinity hemolytic anemia
Hapten type low affinity hemolytic anemia
Headache caused by drug
Heart block caused by drug
Hemolytic anemia caused by drugs
Herbal medicine adverse reaction
High risk drug monitoring status
High risk drug side effect
Homeopathic medicine adverse reaction
Hot flash caused by medication
Hypercalcemia caused by a drug
Hyperkalemia
Hyperosmolar coma due to diabetes mellitus
Hyperosmolar coma due to drug induced diabetes mellitus
Hyperosmolar coma due to secondary diabetes mellitus
Hyperosmolarity due to drug induced diabetes mellitus
Hyperosmolarity due to secondary diabetes mellitus
Hyperplasia of gingiva
Hyperpyrexia
Hypersensitivity disease of liver caused by drug
Hypertension secondary to drug
Hypertrophy of nail
Hypocellular bone marrow
Hypophysectomy-induced hypopituitarism
Hypophysitis caused by drug
Hypopituitarism caused by drug
Hypopituitarism following procedure
Hyposecretion of salivary gland
Hypospermatogenesis
Hypothyroidism caused by drug
Iatrogenic adrenal insufficiency
Iatrogenic hypoglycemia
Iatrogenic hypopituitarism
Iatrogenic pituitary disorder
Iatrogenic thyroiditis
Idiosyncratic drug effect
Immune complex small vessel vasculitis caused by drug
Immune complex urticaria
Immune-complex glomerulonephritis
Immunodeficiency caused by long term therapeutic use of drug
Immunotherapy induced hypophysitis
Impaired glucose tolerance associated with drugs
Increased gastrin secretion
Induced spermatogenic arrest
Infertility due to drug therapy
Inflammatory red colored lesion of internal part of mouth caused by drug
Insufficiency fracture
Interstitial pulmonary fibrosis due to inhalation of drug
Interstitial pulmonary fibrosis due to inhalation of substance
Intolerance to drug
Intractable headache caused by drug
Intraoperative floppy iris syndrome
Intraoperative floppy iris syndrome of left eye
Intraoperative floppy iris syndrome of right eye
Intravenous nutrition adverse reaction
Intrinsic staining of tooth - drug-induced
Irritant contact dermatitis caused by drug in contact with skin
Keratopathy of left eye caused by drug
Keratopathy of right eye caused by drug
Leukopenia caused by drug
Lichenoid drug eruption
Linear IgA dermatosis
Localized eruption of skin
Localized pustular psoriasis
Localized skin eruption caused by drug and medicament
Long QT syndrome caused by drug
Lubricant adverse reaction
Lyell syndrome
Lymphocyte count below reference range
Lymphocytic vasculitis of skin
Maculopapular drug eruption
Maculopapular eruption
Malabsorption caused by drug
Male coital disorder
Male pattern alopecia
Medication bezoar
Medication overuse headache
Medication side effects present
Medication-induced ejaculation disorder
Medication-induced movement disorder
Medication-induced postural tremor
Megaloblastic anemia caused by drugs
Motility disorder of small intestine
Multiple drug intolerant hypertension
Myelofibrosis
Myelofibrosis caused by drug
Myocarditis caused by drug
Myotonia caused by drug
Nail color change due to ingested drug
Nail dystrophy due to cytotoxic therapy
Nail fragility
Nausea and vomiting
Nausea and vomiting caused by drug
Neonatal drug reaction and intoxication
Neonatal perforation of intestine caused by drug
Nephritis caused by drug
Nephropathy due to secondary diabetes mellitus
Neurological disorder monitoring status
Neurological drug side effects
Neuropathy associated with hypoglycemia
Neutrophilia disorder
Neutrophilic eccrine hidradenitis
Neutrophilic eccrine hidradenitis due to cytotoxic therapy
Newborn drug intoxication
Newborn drug reaction
Niacin deficiency
Non dose-related adverse reaction to medication
Non dose-related drug-induced neutropenia
Non-allergic anaphylaxis caused by drug
Non-autoimmune hemolytic anemia
Non-diabetic hypoglycemia
Non-melanin pigmentation caused by drug
Non-pigmenting fixed drug eruption
Nonspecific interstitial pneumonia
Nonspecific interstitial pneumonia caused by medication
Obstructive hyperbilirubinemia
Ocular cicatricial pemphigoid
Oligozoospermia
Oligozoospermia due to drug therapy
Onycholysis
Oral lichenoid reaction
Organic sleep disorder
Organic sleep related movement disorder
Organized pneumonia
Organizing pneumonia caused by medication
Orofacial dyskinesia
Osteomalacia secondary to drug
Osteonecrosis caused by drug
Osteonecrosis of ankle caused by drug
Osteonecrosis of carpus caused by drug
Osteonecrosis of femur caused by drug
Osteonecrosis of fibula
Osteonecrosis of fibula caused by drug
Osteonecrosis of finger caused by drug
Osteonecrosis of hand caused by drug
Osteonecrosis of jaw
Osteonecrosis of jaw caused by drug
Osteonecrosis of pelvis
Osteonecrosis of pelvis caused by drug
Osteonecrosis of radius
Osteonecrosis of radius caused by drug
Osteonecrosis of shoulder caused by drug
Osteonecrosis of tibia
Osteonecrosis of tibia caused by drug
Osteonecrosis of toe caused by drug
Osteopenia caused by drug
Ototoxicity
Ototoxicity - labyrinthine
Pain following administration of agent
Palpation thyroiditis
Parkinsonism caused by drug
Pellagra
Pellagra caused by drug
Pemphigus foliaceus
Pemphigus vulgaris
Persistent miosis
Pharmaceutical fluid or solution adverse reaction
Pharmacologic parasympathicotonic pupil
Pharmacological paralysis of accommodation
Photoonycholysis
Photoonycholysis caused by drug
Photosensitivity caused by drug
Phototoxic drug eruption
Pityriasis rosea-like drug eruption
Pleuroparenchymal fibroelastosis
Pleuroparenchymal fibroelastosis caused by medication
Pleurothotonus
Polymyositis
Polyneuropathy caused by drug
Polyneuropathy due to diabetes mellitus
Polyneuropathy due to drug induced diabetes mellitus
Polyneuropathy due to secondary diabetes mellitus
Porphyrin within reference range
Posteruptive color change of tooth
Posteruptive teeth staining
Posteruptive tooth staining caused by drug
Pre-eruptive color change of tooth
Priapism
Priapism caused by drug
Pruritus caused by drug
Pseudolymphomatous eruption caused by drug
Pseudoporphyria
Pseudoscleroderma due to cytotoxic therapy
Pseudoxanthoma elasticum
Psoriasiform drug eruption
Pulmonary arterial hypertension induced by drug
Pulmonary toxicity
Purpura due to drug-induced capillary damage
Purpura due to drug-induced coagulation abnormality
Pustular psoriasis of palm of hand
Pustular psoriasis of palms and soles
Pustular psoriasis of sole of foot
Radiation recall reaction due to cytotoxic therapy
Raynaud's phenomenon
Rectal hemorrhage caused by drug
Renal hypersensitivity caused by drug
Renal tubular defect
Renal tubular dysgenesis caused by drug
Respiratory bronchiolitis interstitial lung disease
Respiratory bronchiolitis interstitial lung disease caused by medication
Respiratory disorder caused by drug
Restlessness
Retention of urine
Retention of urine caused by drug
Salivary dysfunction caries secondary to medication
Salivary dysfunction dental caries
Scleroderma-like secondary cutaneous sclerosis
Secondary acquired sideroblastic anemia
Secondary acute eosinophilic pneumonia
Secondary alveolar macrophage pneumonia
Secondary bronchiolocentric interstitial pneumonia
Secondary cerebellar degeneration
Secondary chronic eosinophilic pneumonia
Secondary cutaneous vasculitis
Secondary eosinophilia
Secondary erythromelalgia
Secondary hyperprolactinemia
Secondary hypomagnesemia
Secondary nonspecific interstitial pneumonia
Secondary organizing pneumonia
Secondary pleuroparenchymal fibroelastosis
Secondary respiratory bronchiolitis interstitial lung disease
Secondary systemic vasculitis
Secondary thrombocytopenia
Secondary usual interstitial pneumonia
Serum sickness caused by drug
Sinus bradycardia
Sinus bradycardia caused by drug
Sleep-related movement disorder caused by drug
Small vessel pulmonary hypertension
Small vessel vasculitis caused by immune complex
Solar urticaria
Solitary pulmonary hypertension
Spermatogenic arrest
Staining of teeth
Starch peritonitis
Stenosis of lacrimal canaliculi
Stevens Johnson syndrome AND toxic epidermal necrolysis overlap
Stevens-Johnson and toxic epidermal necrolysis overlap syndrome caused by drug
Stevens-Johnson syndrome
Stevens-Johnson syndrome, toxic epidermal necrolysis spectrum
Stomatitis medicamentosa
Strength of nails - finding
Stricture of esophagus
Subacute dyskinesia caused by drug
Substance induction of cytochrome p450 CYP1A2 enzyme
Substance induction of cytochrome p450 CYP3A enzyme
Substance induction of cytochrome p450 enzyme
Substance inhibition of cytochrome p450 CYP3A enzyme
Substance inhibition of cytochrome p450 enzyme
Substance-induced ataxia
Sweet's disease caused by drug
Swelling of gingival and edentulous alveolar ridge caused by drug
Swelling of oral cavity structure
Swollen gums
Sympathoparetic pupil caused by drug
Syringosquamous metaplasia due to cytotoxic therapy
Tardive dyskinesia
T-cell pseudolymphoma caused by drug
Teeth staining caused by drugs
Telogen effluvium
Telogen hair loss caused by drug
Thrombocytopenia caused by drugs
Thrombotic thrombocytopenic purpura
Tic caused by drug
Torsades de pointe caused by drug
Torsades de pointes
Toxic adverse drug interaction with drug
Toxic anagen effluvium
Toxic cardiomyopathy
Toxic cataract
Toxic chorea
Toxic dilated cardiomyopathy
Toxic disorder of refraction AND/OR accommodation
Toxic dystonia
Toxic enteritis of small intestine caused by drug
Toxic epidermal necrolysis caused by drug
Toxic keratoconjunctivitis
Toxic neuromuscular junction disorder
Toxic polyneuropathy
Toxic pulmonary edema
Tremor due to harmful pattern of substance use
Ulcer caused by drug
Ulcer of anus
Ulcer of esophagus caused by ingestion of medicine
Ulcer of foot due to drug induced diabetes mellitus
Ultraviolet recall reaction due to cytotoxic therapy
Urticaria medicamentosa
Usual interstitial pneumonia
Usual interstitial pneumonia caused by medication
Vasculitis caused by drug
Ventricular tachycardia, polymorphic
Vertigo caused by drug
Vitamin B12 deficiency anemia caused by drug
Xerostomia

Coding GuidelinesGuidance

When coding an adverse effect of a drug that has been correctly prescribed and properly administered, assign the appropriate code for the nature of the adverse effect followed by the appropriate code for the adverse effect of the drug.

The appropriate 7th character is to be added to each code from block Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances (T50). Use the following options for the applicable episode of care:

A - initial encounter
D - subsequent encounter
S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to T50.905A: its own notes plus those printed at T50, block T36-T50, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.