G43.E09 — Chronic migraine with aura, not intractable, without status migrainosus
G43.E09 is a billable, specific ICD-10-CM code for chronic migraine with aura, not intractable, without status migrainosus. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Chronic migraine with aura NOS
Risk adjustment
G43.E09 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.E09 is named in 21 Medicare coverage policies — 21 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53057Billing and Coding: Home Health Occupational Therapy
- A56551Billing and Coding: Visual Fields Testing
- A56619Billing and Coding: Nerve Conduction Studies and Electromyography
- A56775Billing and Coding: Magnetic Resonance Angiography
How G43.E09 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.E09.
- Migraine›with aura›chronic
- Migraine›with aura›chronic›without refractory migraine
- Migraine›with aura›chronic›not intractable›without status migrainosus
- Migraine›with aura›chronic›without refractory migraine›without status migrainosus
Related codes at this level
Codes that share G43.E0. If G43.E09 is not quite right, the correct code is usually one of these.
Questions about G43.E09
- Is G43.E09 a billable ICD-10-CM code?
- Yes. G43.E09 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G43.E09 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Episodic and paroxysmal disorders (G40-G47).