Strongyloidiasis (B78) ICD-10-CM
The B78 code range covers strongyloidiasis with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- trichostrongyliasis B81.2
Codes in the B78 Range 5 codes · 4 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B78 range.
Strongyloides
A genus of parasitic nematodes widely distributed as intestinal parasites of mammals.
Strongyloidiasis
Infection with nematodes of the genus STRONGYLOIDES. The presence of larvae may produce pneumonitis and the presence of adult worms in the intestine could lead to moderate to severe diarrhea.
About the B78 Code Range
ICD-10 codes for Strongyloidiasis (B78) classify infections caused by the parasitic worm Strongyloides. These codes help specify whether the infection affects the intestines, skin, is widely spread, or remains unspecified, guiding accurate diagnosis and treatment.
The main code B78 covers all cases of strongyloidiasis, while B78.0 is used for intestinal strongyloidiasis, also called Strongyloides duodenitis, which involves inflammation of the small intestine and can affect the colon. The code B78.1 specifies cutaneous strongyloidiasis, characterized by skin infections such as strongyloidal ground itch or urticaria caused by Strongyloides stercoralis larvae. For cases where the infection spreads beyond the intestines and skin, B78.7 denotes disseminated strongyloidiasis, often occurring alongside immunosuppressive conditions like HIV. If the infection cannot be further classified, B78.9 captures unspecified strongyloidiasis, encompassing various clinical presentations including neurological or glomerular complications due to Strongyloides.
Questions About This Page
How many billable codes are in the B78 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the B78 range classify?
The range classifies strongyloidiasis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
