A06 vs B64
A06 (Amebiasis) compared with B64 (Unspecified protozoal disease), 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. B64 carries an Excludes1 note covering A06: “amebiasis (A06.-)”
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
| A06Amebiasis | B64Unspecified protozoal disease | |
|---|---|---|
| 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 | Amebiasis is a non-billable ICD-10-CM category code (A06). | Unspecified protozoal disease is a billable ICD-10-CM diagnosis code (B64). |
| Includes | infection due to Entamoeba histolytica | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources