B00.3 vs G02
B00.3 (Herpesviral meningitis) compared with G02 (Meningitis in other infectious and parasitic diseases classified elsewhere), 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. G02 carries an Excludes1 note covering B00.3: “herpesviral [herpes simplex] meningitis (B00.3)”
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
| B00.3Herpesviral meningitis | G02Meningitis in other infectious and parasitic diseases classified elsewhere | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | G00-G99 — Diseases of the Nervous System (G00-G99) |
| Definition | Herpesviral meningitis is a billable ICD-10-CM diagnosis code (B00.3). | Meningitis in other infectious and parasitic diseases classified elsewhere is a billable ICD-10-CM diagnosis code (G02). |
| Code first | — | underlying disease, such as: African trypanosomiasis (B56.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources