A05.2 Foodborne Clostridium perfringens [Clostridium welchii] intoxication

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

Applicable to

• Enteritis necroticans
• Pig-bel

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) 371-373 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 005.2 Food poisoning due to Clostridium perfringens (C. welchii)

Code annotations containing back-references to A05.2

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 A05.2

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

Nearby codes

• A05 Other bacterial foodborne intoxications, not elsewhere classified
• A05.0 Foodborne staphylococcal intoxication
• A05.1 Botulism food poisoning
• A05.2 Foodborne Clostridium perfringens [Clostridium welchii] intoxication (this code)
• 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
• A05.9 Bacterial foodborne intoxication, unspecified