G44.53 vs G50.1
G44.53 (Primary thunderclap headache) compared with G50.1 (Atypical facial pain), 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. G44.53 carries an Excludes2 note covering G50.1: “atypical facial pain (G50.1)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| G44.53Primary thunderclap headache | G50.1Atypical facial pain | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | G00-G99 — Diseases of the Nervous System (G00-G99) |
| Definition | Primary thunderclap headache is a billable ICD-10-CM diagnosis code (G44.53). | Atypical facial pain is a billable ICD-10-CM diagnosis code (G50.1). |
| Includes | — | disorders of 5th cranial nerve |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources