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A05.2

A05.2: Foodborne Clostridium perfringens [Clostridium welchii] intoxication

Billable / specific codeICD-10-CM

A05.2 is a billable, specific ICD-10-CM code for foodborne clostridium perfringens [clostridium welchii] intoxication. It is valid for submission on a claim.

Check A05.2 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Enteritis necroticans
  • Pig-bel

Excludes1 inherited from the categories above A05.2

A category’s note binds every code beneath it.

Written on A05: Other bacterial foodborne intoxications, not elsewhere classified

  • 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)

Other codes that can never be billed with A05.2

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • A04Other bacterial intestinal infections
  • T61Toxic effect of noxious substances eaten as seafood
  • T62Toxic effect of other noxious substances eaten as food
  • T78.1Other adverse food reactions, not elsewhere classified

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

A05.2 is named in 5 Medicare coverage policies: 5 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56619Billing and Coding: Nerve Conduction Studies and Electromyography
  • A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
  • A58720Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
  • A58747Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing

Alphabetic index entries that lead here

  • Pig-bel
  • Enteritis›necroticans
  • Infection, infected, infective›Clostridium NEC›perfringens›due to food
  • Infection, infected, infective›Clostridium NEC›perfringens›foodborne(disease)
  • Infection, infected, infective›Clostridium NEC›welchii›foodborne(disease)
  • Infection, infected, infective›Clostridium NEC›welchii›necrotizing enteritis
  • Poisoning›food NEC›due to›Clostridium(perfringens) (Welchii)
  • Intoxication›foodborne›due to›Clostridium›perfringens
  • Intoxication›foodborne›due to›Clostridium›welchii

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under A05

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.