ICD-10-CM 2027
ICD-10 code for intractable migraine
From the official ICD-10-CM alphabetic index entry “Migraine (idiopathic) › intractable”. Page updated September 29, 2026.
About coding intractable migraine
The ICD-10-CM code for intractable migraine is G43.919 (Migraine, unspecified, intractable, without status migrainosus). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on G43.919.
Within G43.91, choose G43.919 (without status migrainosus) only when documentation doesn't support a more specific option: with status migrainosus (G43.911).
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.
More specific intractable migraine codes (official index)
Common questions about intractable migraine ICD-10 codes
What is the ICD-10 code for intractable migraine?
- G43.919 — Migraine, unspecified, intractable, without status migrainosus. More specific codes apply when the documentation supports them: G43.911, G43.919.
Is G43.919 billable?
- Yes. G43.919 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G43.919 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G43.919 as a principal diagnosis.
Is G43.919 a CC or MCC?
- No. G43.919 is neither a CC nor an MCC under MS-DRG v44.0.