Is H35.9 a billable ICD-10-CM code?

Yes. H35.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does H35.9 sit in the tabular list?

Diseases of the eye and adnexa (H00-H59), in the block Disorders of choroid and retina (H30-H36).

H35.9

H35.9 — Unspecified retinal disorder

Billable / specific codeICD-10-CM

H35.9 is a billable, specific ICD-10-CM code for unspecified retinal disorder. It is valid for submission on a claim.

Risk adjustment

H35.9 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

H35.9 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
A56799Billing and Coding: Visual Fields Testing
A57071Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography)
A57071Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography)

How H35.9 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 H35.9.

Change›retina
Degeneration, degenerative›retina
Disease, diseased›retina, retinal
Disorder›retina
Lesion›retina, retinal

Related codes at this level

Codes that share H35. If H35.9 is not quite right, the correct code is usually one of these.

Questions about H35.9

Is H35.9 a billable ICD-10-CM code?: Yes. H35.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does H35.9 sit in the tabular list?: Diseases of the eye and adnexa (H00-H59), in the block Disorders of choroid and retina (H30-H36).