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A05.1

A05.1: Botulism food poisoning

Billable / specific codeICD-10-CM

A05.1 is a billable, specific ICD-10-CM code for botulism food poisoning. It is valid for submission on a claim.

Check A05.1 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

Inclusion terms

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

  • Botulism NOS
  • Classical foodborne intoxication due to Clostridium botulinum

Excludes1 inherited from the categories above A05.1

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 A05.1

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

  • G70Myasthenia gravis and other myoneural disorders
  • A04Other bacterial intestinal infections
  • A48.5Other specified botulism
  • 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

A05.1 is named in 12 Medicare coverage policies: 12 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A54095Billing and Coding: Nerve Conduction Studies and Electromyography
  • A54969Billing and Coding: Nerve Conduction Studies and Electromyography
  • A56619Billing and Coding: Nerve Conduction Studies and Electromyography
  • A57123Billing and Coding: Nerve Conduction Studies and Electromyography

Alphabetic index entries that lead here

  • Botulism(foodborne intoxication)
  • Poisoning›botulism
  • Poisoning›Clostridium botulinum
  • Enteritis›Clostridium›botulinum(food poisoning)
  • Infection, infected, infective›Clostridium NEC›botulinum(food poisoning)
  • Intoxication›foodborne›classical(Clostridium botulinum)
  • Poisoning›Bacillus B›botulinus
  • Intoxication›foodborne›due to›Clostridium›botulinum
  • Poisoning›food NEC›due to›Bacillus›botulinus

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.