A05.9 ICD-10-CA code: Bacterial foodborne intoxication, unspecified
A05.9 is the ICD-10-CA code for “Bacterial foodborne intoxication, unspecified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
A05.9Bacterial foodborne intoxication, unspecified
Short description: Bacterial foodborne intoxication NOS
ICD-10-CA · Canada · Also written A059
Index terms
Entries in CIHI’s alphabetical index that lead to A05.9. Searching the index by the condition the note names is how coders reach this code.
- Contamination, food
- Intoxication, foodborne
- Ichthyotoxism, bacterial
- Intoxication, foodborne, bacterial
- Poisoning (acute), bacterial toxins NEC
- Infection, infected (opportunistic), food
- Intoxication, foodborne, due to, bacterium
- Poisoning (acute), fish (noxious), bacterial
- Gastroenteritis (acute), due to, food poisoning
- Poisoning (acute), food (acute) (bacterial) NEC
- Poisoning (acute), mussels (noxious), bacterial
- Poisoning (acute), seafood (noxious), bacterial
- Poisoning (acute), shellfish (noxious), bacterial
- Poisoning (acute), epidemic, fish (noxious), bacterial
Notes for A05.9
As CIHI prints them, with any note A05.9 takes from the headings above it.
Includes
- 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 A05.9 sits
- 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
- 2Block A00-A09Intestinal infectious diseases
- 3Category A05Other bacterial foodborne intoxications, not elsewhere classified
- 4Valid code A05.9Bacterial foodborne intoxication, 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 A05.9 mean?
A05.9 is the ICD-10-CA code for “Bacterial foodborne intoxication, unspecified” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is A05.9 in ICD-10-CA?
A05.9 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 A05.9?
ICD-10-CA lists Excludes, Includes, Use additional code notes for A05.9, 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.