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ICD-10-CM category G43: Migraine

Category G43 is a heading in chapter 6 (Diseases of the nervous system (G00-G99)), section Episodic and paroxysmal disorders (G40-G47). It is not billable; report one of the 48 complete codes below.

Notes that apply to every G43 code

Excludes1 (never coded together)
  • lower half migraine (G44.00)
Excludes2 (not part of this condition, may be coded together)
  • headache NOS (R51.9)
  • headache syndromes (G44.-)
Use additional code
  • 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

Billable codes in G43

Billable FY2027 ICD-10-CM codes in category G43
CodeDescription
G43.001Migraine without aura, not intractable, with status migrainosus
G43.009Migraine without aura, not intractable, without status migrainosus
G43.011Migraine without aura, intractable, with status migrainosus
G43.019Migraine without aura, intractable, without status migrainosus
G43.101Migraine with aura, not intractable, with status migrainosus
G43.109Migraine with aura, not intractable, without status migrainosus
G43.111Migraine with aura, intractable, with status migrainosus
G43.119Migraine with aura, intractable, without status migrainosus
G43.401Hemiplegic migraine, not intractable, with status migrainosus
G43.409Hemiplegic migraine, not intractable, without status migrainosus
G43.411Hemiplegic migraine, intractable, with status migrainosus
G43.419Hemiplegic migraine, intractable, without status migrainosus
G43.501Persistent migraine aura without cerebral infarction, not intractable, with status migrainosus
G43.509Persistent migraine aura without cerebral infarction, not intractable, without status migrainosus
G43.511Persistent migraine aura without cerebral infarction, intractable, with status migrainosus
G43.519Persistent migraine aura without cerebral infarction, intractable, without status migrainosus
G43.601Persistent migraine aura with cerebral infarction, not intractable, with status migrainosus
G43.609Persistent migraine aura with cerebral infarction, not intractable, without status migrainosus
G43.611Persistent migraine aura with cerebral infarction, intractable, with status migrainosus
G43.619Persistent migraine aura with cerebral infarction, intractable, without status migrainosus
G43.701Chronic migraine without aura, not intractable, with status migrainosus
G43.709Chronic migraine without aura, not intractable, without status migrainosus
G43.711Chronic migraine without aura, intractable, with status migrainosus
G43.719Chronic migraine without aura, intractable, without status migrainosus
G43.801Other migraine, not intractable, with status migrainosus
G43.809Other migraine, not intractable, without status migrainosus
G43.811Other migraine, intractable, with status migrainosus
G43.819Other migraine, intractable, without status migrainosus
G43.821Menstrual migraine, not intractable, with status migrainosus
G43.829Menstrual migraine, not intractable, without status migrainosus
G43.831Menstrual migraine, intractable, with status migrainosus
G43.839Menstrual migraine, intractable, without status migrainosus
G43.901Migraine, unspecified, not intractable, with status migrainosus
G43.909Migraine, unspecified, not intractable, without status migrainosus
G43.911Migraine, unspecified, intractable, with status migrainosus
G43.919Migraine, unspecified, intractable, without status migrainosus
G43.A0Cyclical vomiting, in migraine, not intractable
G43.A1Cyclical vomiting, in migraine, intractable
G43.B0Ophthalmoplegic migraine, not intractable
G43.B1Ophthalmoplegic migraine, intractable
G43.C0Periodic headache syndromes in child or adult, not intractable
G43.C1Periodic headache syndromes in child or adult, intractable
G43.D0Abdominal migraine, not intractable
G43.D1Abdominal migraine, intractable
G43.E01Chronic migraine with aura, not intractable, with status migrainosus
G43.E09Chronic migraine with aura, not intractable, without status migrainosus
G43.E11Chronic migraine with aura, intractable, with status migrainosus
G43.E19Chronic migraine with aura, intractable, without status migrainosus

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.

Codes from the FY2027 ICD-10-CM files (all chapters). Report the code that matches the documentation and the Official Guidelines; this list is not coding advice.