A48.51 Infant botulism

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

Applies from A48 Other bacterial diseases, not elsewhere classified

Excludes1 (never code together)

• actinomycetoma (B47.1)

Applies from A48.5 Other specified botulism

Applicable to

• Non-foodborne intoxication due to toxins of Clostridium botulinum [C. botulinum]

Excludes1 (never code together)

• food poisoning due to toxins of Clostridium botulinum (A05.1)

MS-DRG index

Defines the logic of DRG(s) 791 in MDC 15.

Approximate ICD-9-CM (GEMs)

• 040.41 Infant botulism

Medicare Code Edits (MCE v43.1 (April 2026))

• Pediatric diagnoses (age 0 through 17): Age conflict edit. These diagnoses are clinically expected only in patients age 0 through 17.

Code annotations containing back-references to A48.51

Back-references to A48.51

• Type 1 Excludes: A05.1 Botulism food poisoning ("infant botulism (A48.51)")
• Type 1 Excludes: G70 Myasthenia gravis and other myoneural disorders ("botulism (A05.1, A48.51-A48.52)")

Diagnosis Index entries for A48.51

• Botulism (foodborne intoxication) › infant
• Infection, infected, infective (opportunistic) › Clostridium NEC › botulinum (food poisoning) › infant

Nearby codes

• A48.1 Legionnaires' disease
• A48.2 Nonpneumonic Legionnaires' disease [Pontiac fever]
• A48.3 Toxic shock syndrome
• A48.4 Brazilian purpuric fever
• A48.5 Other specified botulism
• A48.51 Infant botulism (this code)
• A48.52 Wound botulism
• A48.8 Other specified bacterial diseases