G43.911 — Migraine, unspecified, intractable, with status migrainosus
G43.911 is a billable, specific ICD-10-CM code for migraine, unspecified, intractable, with status migrainosus. It is valid for submission on a claim.
Risk adjustment
G43.911 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
G43.911 is named in 17 Medicare coverage policies — 17 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
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How G43.911 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to G43.911.
- Migraine›intractable›with status migrainosus
- Migraine›with refractory migraine›with status migrainosus
Related codes at this level
Codes that share G43.91. If G43.911 is not quite right, the correct code is usually one of these.
Questions about G43.911
- Is G43.911 a billable ICD-10-CM code?
- Yes. G43.911 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G43.911 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Episodic and paroxysmal disorders (G40-G47).