G43 vs G44.86
G43 (Migraine) compared with G44.86 (Cervicogenic 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. G43 carries an Excludes2 note covering G44.86: “headache syndromes (G44.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. G44.86 carries an Excludes2 note covering G43: “migraines (G43.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| G43Migraine | G44.86Cervicogenic headache | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | G00-G99 — Diseases of the Nervous System (G00-G99) |
| Definition | Migraine is a non-billable ICD-10-CM category code (G43). | Cervicogenic headache is a billable ICD-10-CM diagnosis code (G44.86). |
| Use additional code | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources