B78 vs B81.2
B78 (Strongyloidiasis) compared with B81.2 (Trichostrongyliasis), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. B78 carries an Excludes1 note covering B81.2: “trichostrongyliasis (B81.2)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| B78Strongyloidiasis | B81.2Trichostrongyliasis | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) |
| Definition | Strongyloidiasis is a non-billable ICD-10-CM category code (B78). | Trichostrongyliasis is a billable ICD-10-CM diagnosis code (B81.2). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources