H18.503
H18.503 — Unspecified hereditary corneal dystrophies, bilateral
Billable / specific codeICD-10-CMbilateral
H18.503 is a billable, specific ICD-10-CM code for unspecified hereditary corneal dystrophies, bilateral. It is valid for submission on a claim.
Risk adjustment
H18.503 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
H18.503 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.
- A56537Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
- A56548Billing and Coding: Corneal Pachymetry
- A56611Billing and Coding: Corneal Pachymetry
- A56916Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
Related codes at this level
Codes that share H18.50. If H18.503 is not quite right, the correct code is usually one of these.
Questions about H18.503
- Is H18.503 a billable ICD-10-CM code?
- Yes. H18.503 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does H18.503 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).