G47.12
G47.12: Idiopathic hypersomnia without long sleep time
Billable / specific codeICD-10-CM
G47.12 is a billable, specific ICD-10-CM code for idiopathic hypersomnia without long sleep time. It is valid for submission on a claim.
Check G47.12 with the rest of the claim: free scrubberExcludes2 inherited from the categories above G47.12
Not part of this code, but both may be coded when both are present.
Written on G47.1: Hypersomnia
- alcohol-related hypersomnia (F10.182, F10.282, F10.982)
- drug-related hypersomnia (F11.182, F11.282, F11.982, F13.182, F13.282, F13.982, F14.182, F14.282, F14.982, F15.182, F15.282, F15.982, F19.182, F19.282, F19.982)
- hypersomnia due to a mental disorder (F51.13)
- hypersomnia not due to a substance or known physiological condition (F51.1-)
- primary hypersomnia (F51.11)
- sleep apnea (G47.3-)
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
G47.12 is named in 9 Medicare coverage policies: 9 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56612Billing and Coding: CT of the Head
- A56730Billing and Coding: Respiratory Therapy and Oximetry Services
- A56903Billing and Coding: Polysomnography and Other Sleep Studies
- A56923Billing and Coding: Outpatient Sleep Studies
Alphabetic index entries that lead here
- Hypersomnia›idiopathic›without long sleep time
Code history
Unchanged in every release from FY2024 to FY2027.