A05.1 Botulism food poisoning

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Botulism NOS
• Classical foodborne intoxication due to Clostridium botulinum

Excludes1 (never code together)

• infant botulism (A48.51)
• wound botulism (A48.52)

Applies from A05 Other bacterial foodborne intoxications, not elsewhere classified

Excludes1 (never code together)

• 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)

MS-DRG index

Defines the logic of DRG(s) 867-869 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 005.1 Botulism food poisoning

Code annotations containing back-references to A05.1

Back-references to A05.1

• Type 1 Excludes: A48.5 Other specified botulism ("food poisoning due to toxins of Clostridium botulinum (A05.1)")
• Type 1 Excludes: G70 Myasthenia gravis and other myoneural disorders ("botulism (A05.1, A48.51-A48.52)")

Back-references to A05

• Type 1 Excludes: A04 Other bacterial intestinal infections ("bacterial foodborne intoxications, NEC (A05.-)")
• Type 2 Excludes: P37 Other congenital infectious and parasitic diseases ("infectious neonatal diarrhea (A00-A09)")
• Type 1 Excludes: T61 Toxic effect of noxious substances eaten as seafood ("bacterial foodborne intoxications (A05.-)")
• Type 1 Excludes: T62 Toxic effect of other noxious substances eaten as food ("bacterial food borne intoxications (A05.-)")
• Type 1 Excludes: T78.1 Other adverse food reactions, not elsewhere classified ("bacterial food borne intoxications (A05.-)")

Diagnosis Index entries for A05.1

• Botulism (foodborne intoxication)
• Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) › Clostridium › botulinum (food poisoning)
• Infection, infected, infective (opportunistic) › Clostridium NEC › botulinum (food poisoning)
• Intoxication › foodborne › classical (Clostridium botulinum)
• Intoxication › foodborne › due to › Clostridium › botulinum
• Poisoning (acute) › Bacillus B (aertrycke) (cholerae (suis)) (paratyphosus) (suipestifer) › botulinus
• Poisoning (acute) › botulism
• Poisoning (acute) › Clostridium botulinum
• Poisoning (acute) › food NEC › due to › Bacillus (aertrycke) (choleraesuis) (paratyphosus) (suipestifer) › botulinus

Nearby codes

• A05 Other bacterial foodborne intoxications, not elsewhere classified
• A05.0 Foodborne staphylococcal intoxication
• A05.1 Botulism food poisoning (this code)
• A05.2 Foodborne Clostridium perfringens [Clostridium welchii] intoxication
• A05.3 Foodborne Vibrio parahaemolyticus intoxication
• A05.4 Foodborne Bacillus cereus intoxication
• A05.5 Foodborne Vibrio vulnificus intoxication
• A05.8 Other specified bacterial foodborne intoxications