T36-T50 ICD-10-CA block: Poisoning by drugs, medicaments and biological substances
T36-T50 isn’t a code on its own. Choose one of the 147 codes beneath it, the one the documentation supports.
Official description
T36-T50Poisoning by drugs, medicaments and biological substances (T36-T50)
ICD-10-CA · Canada
Codes in T36-T50
T36-T50 isn’t a code on its own. Open the group that matches what the note documents.
T36Poisoning by systemic antibiotics (10 codes)T37Poisoning by other systemic anti-infectives and antiparasitics (8 codes)T38Poisoning by hormones and their synthetic substitutes and antagonists, not elsewhere classified (10 codes)T39Poisoning by nonopioid analgesics, antipyretics and antirheumatics (7 codes)T40Poisoning by narcotics and psychodysleptics [hallucinogens] (18 codes)T41Poisoning by anaesthetics and therapeutic gases (6 codes)T42Poisoning by antiepileptic, sedative-hypnotic and antiparkinsonism drugs (9 codes)T43Poisoning by psychotropic drugs, not elsewhere classified (11 codes)T44Poisoning by drugs primarily affecting the autonomic nervous system (10 codes)T45Poisoning by primarily systemic and haematological agents, not elsewhere classified (10 codes)T46Poisoning by agents primarily affecting the cardiovascular system (10 codes)T47Poisoning by agents primarily affecting the gastrointestinal system (10 codes)T48Poisoning by agents primarily acting on smooth and skeletal muscles and the respiratory system (8 codes)T49Poisoning by topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinolaryngological and dental drugs (10 codes)T50Poisoning by diuretics and other and unspecified drugs, medicaments and biological substances (10 codes)Notes for T36-T50
As CIHI prints them, with any note T36-T50 takes from the headings above it.
Includes
- Overdose of these substanceswrong substance given or taken in error
Excludes
Conditions classified elsewhere.
- Abuse of non-dependence-producing substances (F55)adverse effects ["hypersensitivity", "reaction", etc.] of correct substance properly administered; such cases are to be classified according to the nature of the adverse effect, such as:• aspirin gastritis (K29.-)• blood disorders (D50-D76)• dermatitis• contact (L23-L25)• due to substances taken internally (L27.-)• nephropathy (N14.0-N14.2)• unspecified adverse effect of drug (T88.7)drug:• intoxication meaning inebriation (F10-F19)• reaction and poisoning affecting the fetus and newborn (P00-P96)pathological drug intoxication (F10-F19)
- Birth trauma (P10-P15)obstetric trauma (O70-O71)From Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98)
Note
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to multiple or unspecified body regions as well as poisoning and certain other consequences of external causes.Where multiple sites of injury are specified in the titles, the word "with" indicates involvement of both sites, and the word "and" indicates involvement of either or both sites.The principle of multiple coding of injuries should be followed wherever possible.Combination categories for multiple injuries is provided for use when there are insufficient detail as to the nature of the individual conditions, or for primary tabulation purposes when it is more convenient to record single code; otherwise, the component injuries should be coded separately.Reference should also be made to the coding rules and guidelines.The blocks of the S-section as well as (T00-T14 and T90-T98) contain injuries at the three-character level classified by type as follows:Superficial injury including:abrasionblister (nonthermal)contusion, including bruise and haematomainjury from superficial foreign body (splinter) without major open woundinsect bite (nonvenomous)Open wound including:animal bitecutlacerationpuncture wound:• NOS• with (penetrating) foreign bodyFracture including:Fracture:closed: comminuted, depressed, elevated, fissured, greenstick, impacted, linear, simple, slipped epiphysis, spiral — with or without delayed healingdislocateddisplacedFracture:open: compound, infected, missile, puncture, with foreign body — with or without delayed healingExcludes:malunion of fracture (M84.0)nonunion of fracture [pseudoarthrosis] (M84.1)pathological fracture (M84.4):• with osteoporosis (M80.-)stress fracture (M84.3)Dislocation, sprain and strain including:avulsion, laceration, sprain, strain, traumatic: haemarthosis, rupture, subluxation, tear of cartilage, joint (capsule), ligamentInjury to nerves and spinal cord including:complete or incomplete lesion of spinal cordlesion incontinuity of nerves and spinal cordtraumatic:• division of nerve• haematomyelia• paralysis (transient)• paraplegia• quadriplegiaInjury to blood vessels includingavulsion, cut, laceration, traumatic: aneurysm or fistula (arteriovenous), arterial haematoma, rupture of blood vesselsInjury of muscle, fascia and tendon including:avulsion, cut, laceration, strain, traumatic rupture of muscle, fascia and tendonCrushing InjuryTraumatic amputationInjury to internal organs including:blast injuries, bruise, concussion injuries, crushing, laceration, traumatic: haematoma, puncture, rupture, tear of internal organsOther and unspecified injuriesFrom Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98)
Where T36-T50 sits
- 1ChapterChapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98)
- 2Block T36-T50Poisoning by drugs, medicaments and biological substances
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
Is T36-T50 a valid ICD-10-CA code?
No. T36-T50 (Poisoning by drugs, medicaments and biological substances) is a block heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 147 codes; record the one the documentation supports.
Where is T36-T50 in ICD-10-CA?
T36-T50 sits under Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98).
What coding notes apply to T36-T50?
ICD-10-CA lists Includes, Excludes, Note notes for T36-T50, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside T36-T50
S00-S09Injuries to the headS10-S19Injuries to the neckS20-S29Injuries to the thoraxS30-S39Injuries to the abdomen, lower back, lumbar spine and pelvisS40-S49Injuries to the shoulder and upper armS50-S59Injuries to the elbow and forearmS60-S69Injuries to the wrist and handS70-S79Injuries to the hip and thighS80-S89Injuries to the knee and lower legS90-S99Injuries to the ankle and footT00-T07Injuries involving multiple body regionsT08-T14Injuries to unspecified parts of trunk, limb or body regionT15-T19Effects of foreign body entering through natural orificeT20-T32Burns and corrosionsT33-T35FrostbiteT51-T65Toxic effects of substances chiefly nonmedicinal as to sourceT66-T78Other and unspecified effects of external causesT79-T79Certain early complications of trauma (T79)T80-T88Complications of surgical and medical care, not elsewhere classifiedT90-T98Sequelae of injuries, of poisoning and of other consequences of external causes