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A05.1 ICD-10-CA code: Botulism

A05.1 is the ICD-10-CA code for “Botulism” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

A05.1

Botulism

ICD-10-CA · Canada · Also written A051

Index terms

Entries in CIHI’s alphabetical index that lead to A05.1. Searching the index by the condition the note names is how coders reach this code.

  • Poisoning (acute), botulism
  • Botulism (foodborne intoxication)
  • Botulism (foodborne intoxication), wound
  • Poisoning (acute), Clostridium botulinum
  • Botulism (foodborne intoxication), infant
  • Intoxication, foodborne, due to, Clostridium, botulinum
  • Infection, infected (opportunistic), Clostridium, botulinum
  • Intoxication, foodborne, classical, due to Clostridium botulinum

Notes for A05.1

As CIHI prints them, with any note A05.1 takes from the headings above it.

Includes

  • Classical foodborne intoxication due to Clostridium botulinum
  • Diseases generally recognized as communicable or transmissibleFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)

Use additional code

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

  • Use additional code (U82-U84) to identify resistance to antimicrobial drugsFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)

Excludes

Conditions classified elsewhere.

  • Clostridium difficile foodborne intoxication and infection (A04.7)Escherichia coli infection (A04.0-A04.4)listeriosis (A32.-)salmonella foodborne intoxication and infection (A02.-)toxic effect of noxious foodstuffs (T61-T62)From A05 Other bacterial foodborne intoxications, not elsewhere classified
  • Carrier or suspected carrier of infectious disease (Z22.-)certain localized infections - see body system-related chaptersinfectious and parasitic diseases:• complicating pregnancy, childbirth and the puerperium [except obstetrical tetanus] (O98.-)• specific to the perinatal period [except tetanus neonatorum, whooping cough, congenital syphilis, perinatal gonococcal infection and perinatal human immunodeficiency virus [HIV] disease] (P35-P39)influenza and other acute respiratory infections (J00-J22)From Chapter 1: Certain infectious and parasitic diseases (A00-B99)

Where A05.1 sits

  1. 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
  2. 2Block A00-A09Intestinal infectious diseases
  3. 3Category A05Other bacterial foodborne intoxications, not elsewhere classified
  4. 4Valid code A05.1Botulism

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 A05.1 in the CIHI source

Frequently asked questions

What does ICD-10-CA code A05.1 mean?

A05.1 is the ICD-10-CA code for “Botulism” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is A05.1 in ICD-10-CA?

A05.1 sits under A05 Other bacterial foodborne intoxications, not elsewhere classified, within A00-A09 Intestinal infectious diseases, within Chapter 1: Certain infectious and parasitic diseases (A00-B99).

What coding notes apply to A05.1?

ICD-10-CA lists Includes, Excludes, Use additional code notes for A05.1, 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 A05.1

A05.0Foodborne staphylococcal intoxicationA05.2Foodborne Clostridium perfringens [Clostridium welchii] intoxicationA05.3Foodborne Vibrio parahaemolyticus intoxicationA05.4Foodborne Bacillus cereus intoxicationA05.8Other specified bacterial foodborne intoxicationsA05.9Bacterial foodborne intoxication, unspecified