H31.9 — Unspecified disorder of choroid
H31.9 is a billable, specific ICD-10-CM code for unspecified disorder of choroid. It is valid for submission on a claim.
Risk adjustment
H31.9 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
H31.9 is named in 5 Medicare coverage policies — 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56551Billing and Coding: Visual Fields Testing
- A56726Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography)
- A56799Billing and Coding: Visual Fields Testing
- A57071Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography)
How H31.9 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 H31.9.
- Disease, diseased›choroid
- Disorder›choroid
- Disease, diseased›uveal tract›posterior
Related codes at this level
Codes that share H31. If H31.9 is not quite right, the correct code is usually one of these.
Questions about H31.9
- Is H31.9 a billable ICD-10-CM code?
- Yes. H31.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does H31.9 sit in the tabular list?
- Diseases of the eye and adnexa (H00-H59), in the block Disorders of choroid and retina (H30-H36).