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ICD-10-CM 2027 diagnosis code

A05Other bacterial foodborne intoxications, not elsewhere classified

Not billable — use a more specific code

A05 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.Short description: Oth bacterial foodborne intoxications, NEC

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About A05

A05 is the ICD-10-CM diagnosis code for other bacterial foodborne intoxications, not elsewhere classified. It belongs to block A00-A09 (intestinal infectious diseases) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: A05.0 (intoxication), A05.1 (poisoning), A05.2 (intoxication), A05.3 (intoxication), A05.4 (intoxication), A05.5 (intoxication), A05.8 (intoxications) and A05.9 (unspecified).

Don't report A05 together with the conditions in its Excludes1 note: Clostridium difficile foodborne intoxication and infection (A04.7-), Escherichia coli infection (A04.0-A04.4), listeriosis (A32.-), salmonella foodborne intoxication and infection (A02.-) and 1 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under A05

Coding notes

Excludes1Not coded here — never report together with this code
  • 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)

Notes that apply from higher levels

Instructions written at a parent level also apply to A05.

Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.

Codes whose notes reference A05

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about A05

Is A05 billable?

No. A05 is a header code. Report one of its more specific subcodes instead.