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B77.9

B77.9: Ascariasis, unspecified

Billable / specific codeICD-10-CM

B77.9 is a billable, specific ICD-10-CM code for ascariasis, unspecified. It is valid for submission on a claim.

Check B77.9 with the rest of the claim: free scrubber

Risk adjustment

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

Medicare coverage

B77.9 is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56632Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy

Alphabetic index entries that lead here

  • Ascariasis
  • Infection, infected, infective›roundworm NEC›Ascariasis
  • Infestation›roundworm NEC›Ascariasis
  • Round›worms NEC›Ascariasis

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under B77

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.