Ascariasis (B77) ICD-10-CM
The B77 code range covers ascariasis with 6 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- ascaridiasis
- roundworm infection
Codes in the B77 Range 6 codes · 4 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B77 range.
Ascariasis
Infection by nematodes of the genus ASCARIS. Ingestion of infective eggs causes diarrhea and pneumonitis. Its distribution is more prevalent in areas of poor sanitation and where human feces are used for fertilizer.
About the B77 Code Range
Ascariasis is an infection caused by Ascaris nematodes, or roundworms.
B77.0 identifies ascariasis with intestinal complications. Under B77.8, B77.81 identifies pneumonia, a lung infection, while B77.89 identifies other complications. B77.9 is unspecified ascariasis.
Questions About This Page
How many billable codes are in the B77 range?
Of the 6 codes in this range, 4 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the B77 range classify?
The range classifies ascariasis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
