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X20-X29 ICD-10-CA block: Contact with venomous animals and plants

X20-X29 isn’t a code on its own. Choose one of the 10 codes beneath it, the one the documentation supports.

Official description

X20-X29

Contact with venomous animals and plants (X20-X29)

ICD-10-CA · Canada

Codes in X20-X29

X20-X29 isn’t a code on its own. Open the code that matches what the note documents.

X20Contact with venomous snakes and lizardsX21Contact with venomous spidersX22Contact with scorpionsX23Contact with hornets, wasps and beesX24Contact with centipedes and venomous millipedes (tropical)X25Contact with other venomous arthropodsX26Contact with venomous marine animals and plantsX27Contact with other specified venomous animalsX28Contact with other specified venomous plantsX29Contact with unspecified venomous animal or plant

Notes for X20-X29

As CIHI prints them, with any note X20-X29 takes from the headings above it.

Includes

  • Chemical released by:• animal• insectrelease of venom through fangs, hairs, spines, tentacles and other venom apparatusvenomous bites and stings

Use additional code

Add a code for this detail when the note documents it.

  • Use additional code from category U98.- to identify place of occurrence.

Excludes

Conditions classified elsewhere.

  • Ingestion of poisonous animals or plants (X49.-)

Note

  • This chapter, which in previous revisions of ICD constituted a supplementary classification, permits the classification of environmental events and circumstances as the cause of injury, poisoning and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used in addition to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter XIX, Injury, poisoning and certain other consequences of external causes (S00-T98). Causes of death should preferably be tabulated according to both Chapter XIX and Chapter XX, but if only one code is tabulated then the code from Chapter XX should be used in preference. Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter XX should be used to provide additional information for multiple-condition analysis only.From Chapter 20: External causes of morbidity and mortality (V01-Y98)

Where X20-X29 sits

  1. 1ChapterChapter 20: External causes of morbidity and mortality (V01-Y98)
  2. 2Block V01-X59Accidents
  3. 3Block W00-X59Other external causes of accidental injury
  4. 4Block X20-X29Contact with venomous animals and plants

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.

See X20-X29 in the CIHI source

Frequently asked questions

Is X20-X29 a valid ICD-10-CA code?

No. X20-X29 (Contact with venomous animals and plants) is a block heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 10 codes; record the one the documentation supports.

Where is X20-X29 in ICD-10-CA?

X20-X29 sits under W00-X59 Other external causes of accidental injury, within V01-X59 Accidents, within Chapter 20: External causes of morbidity and mortality (V01-Y98).

What coding notes apply to X20-X29?

ICD-10-CA lists Includes, Use additional code, Excludes, Note notes for X20-X29, 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 X20-X29

W00-W19FallsW20-W49Exposure to inanimate mechanical forcesW50-W64Exposure to animate mechanical forcesW65-W74Accidental drowning and submersionW75-W84Other accidental threats to breathingW85-W99Exposure to electric current, radiation and extreme ambient air temperature and pressureX00-X09Exposure to smoke, fire and flamesX10-X19Contact with heat and hot substancesX30-X39Exposure to forces of natureX40-X49Accidental poisoning by and exposure to noxious substancesX50-X57Overexertion, travel and privationX58-X59Accidental exposure to other and unspecified factors