H40.031
BillableAnatomical narrow angle, right eye
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is H40.031 an HCC code?
No. H40.031 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
H40.031 is the ICD-10-CM diagnosis code for anatomical narrow angle, right eye. A structural condition where the drainage angle of the right eye is anatomically narrow, increasing the risk of angle-closure glaucoma. H40.031 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering glaucoma (h40-h42).
H40.031 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Anatomical narrow angle is a structural finding that may or may not have progressed to acute angle closure.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for H40.031 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Anatomical narrow angle is a structural finding that may or may not have progressed to acute angle closure
- •Document whether this is a primary finding or secondary to other ocular conditions