B04 vs B08.0
B04 (Monkeypox) compared with B08.0 (Other orthopoxvirus infections), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. B08.0 carries an Excludes2 note covering B04: “monkeypox (B04)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| B04Monkeypox | B08.0Other orthopoxvirus infections | |
|---|---|---|
| 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 | Monkeypox is a billable ICD-10-CM diagnosis code (B04). | Other orthopoxvirus infections is a non-billable ICD-10-CM category code (B08.0). |
| Includes | Mpox | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources