Coding and coverage · ICD-10-CM

G43 Migraine

Not billable (header)Chapter 6

Report one of the more specific codes below.

Check coverage with this diagnosis

Codes under this one

  • G43.0 Migraine without auraHeader
  • G43.1 Migraine with auraHeader
  • G43.4 Hemiplegic migraineHeader
  • G43.5 Persistent migraine aura without cerebral infarctionHeader
  • G43.6 Persistent migraine aura with cerebral infarctionHeader
  • G43.7 Chronic migraine without auraHeader
  • G43.8 Other migraineHeader
  • G43.9 Migraine, unspecifiedHeader
  • G43.A Cyclical vomitingHeader
  • G43.B Ophthalmoplegic migraineHeader
  • G43.C Periodic headache syndromes in child or adultHeader
  • G43.D Abdominal migraineHeader
  • G43.E Chronic migraine with auraHeader

Instructional notes

Chapter 6

Excludes2Not included here: the patient may have both; report both when both are present.
  • 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)

This code

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
Excludes2Not included here: the patient may have both; report both when both are present.
Use additional codeAdd a second code for the full picture.
  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Notes
  • the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled

Chapter 6: Diseases of the nervous system · G40-G47 Episodic and paroxysmal disorders (G40-G47)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.