A04.9

A04.9: Bacterial intestinal infection, unspecified

Billable / specific codeICD-10-CM

A04.9 is a billable, specific ICD-10-CM code for bacterial intestinal infection, unspecified. It is valid for submission on a claim.

Check A04.9 with the rest of the claim: free scrubber

Inclusion terms

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

Bacterial enteritis NOS

Excludes1 inherited from the categories above A04.9

A category’s note binds every code beneath it.

Written on A04: Other bacterial intestinal infections

bacterial foodborne intoxications, NEC (A05.-)
tuberculous enteritis (A18.32)

Risk adjustment

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

Medicare coverage

A04.9 is named in 7 Medicare coverage policies: 7 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A56456Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
A56632Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
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

Alphabetic index entries that lead here

Enteritis›bacterial
Diarrhea, diarrheal›due to›bacteria
Spondylitis›in›enterobacteria
Enteritis›infectious NOS›due to›bacteria NOS

Code history

Unchanged in every release from FY2024 to FY2027.