G47.419 — Narcolepsy without cataplexy
G47.419 is a billable, specific ICD-10-CM code for narcolepsy without cataplexy. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Narcolepsy NOS
Risk adjustment
G47.419 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
G47.419 is named in 28 Medicare coverage policies — 24 listing it as supporting medical necessity, and 4 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56857Billing and Coding: MolDX: HLA-DQB1*06:02 Testing for Narcolepsynot covered
- A56881Billing and Coding: MolDX: HLA-DQB1*06:02 Testing for Narcolepsynot covered
- A57441Billing and Coding: MolDX: HLA-DQB1*06:02 Testing for Narcolepsynot covered
- A57575Billing and Coding: MolDX: HLA-DQB1*06:02 Testing for Narcolepsynot covered
How G47.419 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 G47.419.
- Gélineau's syndrome
- Narcolepsy
- Syndrome›Gelineau's
Related codes at this level
Codes that share G47.41. If G47.419 is not quite right, the correct code is usually one of these.
Questions about G47.419
- Is G47.419 a billable ICD-10-CM code?
- Yes. G47.419 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G47.419 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Episodic and paroxysmal disorders (G40-G47).