G44.86
Cervicogenic headache
G44.86 (also written G4486) is a billable ICD-10-CM diagnosis code for cervicogenic headache. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 40 codes in category G44 (Other headache syndromes). The Alphabetic Index lists it under 1 entry. Its coding notes include a Code also instruction, 1 Excludes1 entry and 13 Excludes2 entries.
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
- associated cervical spinal condition, if known
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- headache with orthostatic or positional component, not elsewhere classified (R51.0)
Also from chapter/block level (8 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the Musculoskeletal Rehabilitation clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 1 entry