H40.001
H40.001 — Preglaucoma, unspecified, right eye
Billable / specific codeICD-10-CMright
H40.001 is a billable, specific ICD-10-CM code for preglaucoma, unspecified, right eye. It is valid for submission on a claim.
Risk adjustment
H40.001 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
H40.001 is named in 15 Medicare coverage policies — 15 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
- A56457Billing and Coding: Corneal Pachymetry
- A56537Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
- A56548Billing and Coding: Corneal Pachymetry
Related codes at this level
Codes that share H40.00. If H40.001 is not quite right, the correct code is usually one of these.
Questions about H40.001
- Is H40.001 a billable ICD-10-CM code?
- Yes. H40.001 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does H40.001 sit in the tabular list?
- Diseases of the eye and adnexa (H00-H59), in the block Glaucoma (H40-H42).