T37.9 ICD-10-CA code: Poisoning by systemic anti-infective and antiparasitic, unspecified
T37.9 is the ICD-10-CA code for “Poisoning by systemic anti-infective and antiparasitic, unspecified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
T37.9Poisoning by systemic anti-infective and antiparasitic, unspecified
Short description: Poisn systc antiinfect antiparasitc NOS
ICD-10-CA · Canada · Also written T379
Notes for T37.9
As CIHI prints them, with any note T37.9 takes from the headings above it.
Includes
- Overdose of these substanceswrong substance given or taken in errorFrom T36-T50 Poisoning by drugs, medicaments and biological substances
Excludes
Conditions classified elsewhere.
- Anti-infectives:• locally applied NEC (T49.0)• topically used (for)• ear, nose and throat (T49.6)• eye (T49.5)From T37 Poisoning by other systemic anti-infectives and antiparasitics
- 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)From T36-T50 Poisoning by drugs, medicaments and biological substances
- 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 T37.9 sits
- 1ChapterChapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98)
- 2Block T36-T50Poisoning by drugs, medicaments and biological substances
- 3Category T37Poisoning by other systemic anti-infectives and antiparasitics
- 4Valid code T37.9Poisoning by systemic anti-infective and antiparasitic, unspecified
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
What does ICD-10-CA code T37.9 mean?
T37.9 is the ICD-10-CA code for “Poisoning by systemic anti-infective and antiparasitic, unspecified” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is T37.9 in ICD-10-CA?
T37.9 sits under T37 Poisoning by other systemic anti-infectives and antiparasitics, within T36-T50 Poisoning by drugs, medicaments and biological substances, within Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98).
What coding notes apply to T37.9?
ICD-10-CA lists Excludes, Includes, Note notes for T37.9, 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 T37.9
View T37T37.0Poisoning by sulfonamidesT37.1Poisoning by antimycobacterial drugsT37.2Poisoning by antimalarials and drugs acting on other blood protozoaT37.3Poisoning by other antiprotozoal drugsT37.4Poisoning by anthelminthicsT37.5Poisoning by antiviral drugsT37.8Poisoning by other specified systemic anti-infectives and antiparasitics