G44.1 vs G44.3
G44.1 (Vascular headache, not elsewhere classified) compared with G44.3 (Post-traumatic headache), 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. G44.1 carries an Excludes2 note covering G44.3: “post-traumatic headache (G44.3-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| G44.1Vascular headache, not elsewhere classified | G44.3Post-traumatic headache | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | G00-G99 — Diseases of the Nervous System (G00-G99) |
| Definition | Vascular headache, not elsewhere classified is a billable ICD-10-CM diagnosis code (G44.1). | Post-traumatic headache is a non-billable ICD-10-CM category code (G44.3). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources