H52.31 — Anisometropia
H52.31 is a billable, specific ICD-10-CM code for anisometropia. It is valid for submission on a claim.
Risk adjustment
H52.31 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
H52.31 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.
- A56453Billing and Coding: Cataract Extraction
- A56544Billing and Coding: Cataract Extraction
- A56613Billing and Coding: Cataract Surgery
- A57195Billing and Coding: Cataract Surgery in Adults
How H52.31 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 H52.31.
- Anisometropia(congenital)
- Disorder›refraction›anisometropia
Related codes at this level
Codes that share H52.3. If H52.31 is not quite right, the correct code is usually one of these.
Questions about H52.31
- Is H52.31 a billable ICD-10-CM code?
- Yes. H52.31 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does H52.31 sit in the tabular list?
- Diseases of the eye and adnexa (H00-H59), in the block Disorders of ocular muscles, binocular movement, accommodation and refraction (H49-H52).