ICD-10-CM 2027
ICD-10 code for complicated migraine
From the official ICD-10-CM alphabetic index entry “Migraine (idiopathic) › complicated”. Page updated September 29, 2026.
About coding complicated migraine
The ICD-10-CM code for complicated migraine is G43.109 (Migraine with aura, not intractable, without status migrainosus).
Within G43.10, choose G43.109 (without status migrainosus) only when documentation doesn't support a more specific option: with status migrainosus (G43.101).
Use an additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about complicated migraine ICD-10 codes
What is the ICD-10 code for complicated migraine?
- G43.109 — Migraine with aura, not intractable, without status migrainosus.
Is G43.109 billable?
- Yes. G43.109 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G43.109 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G43.109 as a principal diagnosis.
Is G43.109 a CC or MCC?
- No. G43.109 is neither a CC nor an MCC under MS-DRG v44.0.