G44.86 (Cervicogenic headache) compared with R51.0 (Headache with orthostatic component, not elsewhere classified), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Distinct conditions — both may be reported.
“headache with orthostatic or positional component, not elsewhere classified (R51.0)”
An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.
Source: CMS ICD-10-CM tabular instructional notes
Distinct conditions — both may be reported.
“migraine and other headache syndromes (G43-G44)”
An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.
Source: CMS ICD-10-CM tabular instructional notes
Yes, when both are documented. G44.86 carries an Excludes2 note covering R51.0: “headache with orthostatic or positional component, not elsewhere classified (R51.0)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. R51.0 carries an Excludes2 note covering G44.86: “migraine and other headache syndromes (G43-G44)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
| G44.86Cervicogenic headache | R51.0Headache with orthostatic component, not elsewhere classified | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Cervicogenic headache is a billable ICD-10-CM diagnosis code (G44.86). | Headache with orthostatic component, not elsewhere classified is a billable ICD-10-CM diagnosis code (R51.0). |
| Includes | — | Headache with positional component, not elsewhere classified |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources