H18.222
H18.222 — Idiopathic corneal edema, left eye
Billable / specific codeICD-10-CMleft
H18.222 is a billable, specific ICD-10-CM code for idiopathic corneal edema, left eye. It is valid for submission on a claim.
Risk adjustment
H18.222 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
H18.222 is named in 9 Medicare coverage policies — 9 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
- A56825Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
- A56916Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
Code history
H18.222 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share H18.22. If H18.222 is not quite right, the correct code is usually one of these.
Questions about H18.222
- Is H18.222 a billable ICD-10-CM code?
- Yes. H18.222 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does H18.222 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).