H21.509
H21.509 — Unspecified adhesions of iris and ciliary body, unspecified eye
Billable / specific codeICD-10-CMunspecified
H21.509 is a billable, specific ICD-10-CM code for unspecified adhesions of iris and ciliary body, unspecified eye. It is valid for submission on a claim.
Risk adjustment
H21.509 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
H21.509 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A57483Billing and Coding: Visual Fields
- A57637Billing and Coding: Visual Field Examination
Related codes at this level
Codes that share H21.50. If H21.509 is not quite right, the correct code is usually one of these.
Questions about H21.509
- Is H21.509 a billable ICD-10-CM code?
- Yes. H21.509 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does H21.509 sit in the tabular list?
- Diseases of the eye and adnexa (H00-H59), in the block Disorders of sclera, cornea, iris and ciliary body (H15-H22).