H49.00
BillableThird [oculomotor] nerve palsy, unspecified eye
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is H49.00 an HCC code?
No. H49.00 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
H49.00 is the ICD-10-CM diagnosis code for third [oculomotor] nerve palsy, unspecified eye. Weakness or paralysis of the muscles that control eye movement due to damage to the third cranial nerve, affecting an unspecified eye. H49.00 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of ocular muscles, binocular movement, accommodation and refraction (h49-h52).
H49.00 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.
If laterality is documented (right or left eye), use H49.01 or H49.02 instead of the unspecified code.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for H49.00 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.