ICD-10-CM › R00-R99 › R50-R69 › R codes › R51

R51

Headache

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

Billable FY2016 to FY2020, and a category header from FY2021.

Submit one of these 2 more specific codes instead:

  • R51.0 Headache with orthostatic component, not elsewhere classified
  • R51.9 Headache, unspecified

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2007 Added to the draft code set draft Headache
  2. FY2021 Stopped being billable

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

This code

Excludes2 - not included here

  • atypical face pain (G50.1)
  • migraine and other headache syndromes (G43-G44)
  • trigeminal neuralgia (G50.0)