G44.81

G44.81: Hypnic headache

Billable / specific codeICD-10-CM

G44.81 is a billable, specific ICD-10-CM code for hypnic headache. It is valid for submission on a claim.

Check G44.81 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above G44.81

A category’s note binds every code beneath it.

Written on G44: Other headache syndromes

headache NOS (R51.9)

Excludes2 inherited from the categories above G44.81

Not part of this code, but both may be coded when both are present.

Written on G44.8: Other specified headache syndromes

headache with orthostatic or positional component, not elsewhere classified (R51.0)

Written on G44: Other headache syndromes

atypical facial pain (G50.1)
headache due to lumbar puncture (G97.1)
migraines (G43.-)
trigeminal neuralgia (G50.0)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

G44.81 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A56612Billing and Coding: CT of the Head
A57204Billing and Coding: MRI and CT Scans of the Head and Neck

Alphabetic index entries that lead here

Headache›hypnic

Code history

Unchanged in every release from FY2024 to FY2027.