B81.1 vs B83
B81.1 (Intestinal capillariasis) compared with B83 (Other helminthiases), 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. B83 carries an Excludes1 note covering B81.1: “capillariasis NOS (B81.1)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Yes, when both are documented. B83 carries an Excludes2 note covering B81.1: “intestinal capillariasis (B81.1)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| B81.1Intestinal capillariasis | B83Other helminthiases | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) |
| Definition | Intestinal capillariasis is a billable ICD-10-CM diagnosis code (B81.1). | Other helminthiases is a non-billable ICD-10-CM category code (B83). |
| Includes | Capillariasis NOS Infection due to Capillaria philippinensis | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources