H21.503
H21.503 — Unspecified adhesions of iris, bilateral
Billable / specific codeICD-10-CMbilateral
H21.503 is a billable, specific ICD-10-CM code for unspecified adhesions of iris, bilateral. It is valid for submission on a claim.
Risk adjustment
H21.503 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
H21.503 is named in 6 Medicare coverage policies — 6 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53060Billing and Coding: Ophthalmology: Extended Ophthalmoscopy and Fundus Photography
- A56537Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
- A57068Billing and Coding: Ocular Photography - External
- A57071Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography)
Related codes at this level
Codes that share H21.50. If H21.503 is not quite right, the correct code is usually one of these.
Questions about H21.503
- Is H21.503 a billable ICD-10-CM code?
- Yes. H21.503 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does H21.503 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).