D31.91
BillableBenign neoplasm of unspecified part of right eye
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is D31.91 an HCC code?
No. D31.91 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
D31.91 is the ICD-10-CM diagnosis code for benign neoplasm of unspecified part of right eye. A noncancerous tumor of the right eye when the specific part of the eye is not documented. D31.91 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering benign neoplasms, except benign neuroendocrine tumors (d10-d36).
D31.91 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.
Use this code when laterality is known to be right but the specific ocular structure is not specified.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for D31.91 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code when laterality is known to be right but the specific ocular structure is not specified
- •Attempt to obtain more specific anatomical documentation from the clinical record