G43.019 — Migraine without aura, intractable, without status migrainosus
G43.019 is a billable, specific ICD-10-CM code for migraine without aura, intractable, without status migrainosus. It is valid for submission on a claim.
Risk adjustment
G43.019 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
G43.019 is named in 20 Medicare coverage policies — 20 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
- A55530Billing and Coding: Peripheral Nerve Stimulation
- A56273Billing and Coding: Chiropractic Services
- A56612Billing and Coding: CT of the Head
How G43.019 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 G43.019.
- Migraine›without aura›with refractory migraine
- Migraine›without aura›intractable›without status migrainosus
- Migraine›without aura›with refractory migraine›without status migrainosus
Related codes at this level
Codes that share G43.01. If G43.019 is not quite right, the correct code is usually one of these.
Questions about G43.019
- Is G43.019 a billable ICD-10-CM code?
- Yes. G43.019 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G43.019 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Episodic and paroxysmal disorders (G40-G47).