H51.8
BillableOther specified disorders of binocular movement
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is H51.8 an HCC code?
No. H51.8 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
H51.8 is the ICD-10-CM diagnosis code for other specified disorders of binocular movement. Various other disorders affecting how the eyes move together that don't fit into standard categories, such as nystagmus or other coordination problems. H51.8 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).
H51.8 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 only when a more specific H51 code is not applicable.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for H51.8 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when a more specific H51 code is not applicable
- •Document the specific eye movement disorder in detail for clarity