H35.9 ICD-10-CM Code: Unspecified retinal disorder

H35.9 is the ICD-10-CM diagnosis code for unspecified retinal disorder. This code describes a problem with the retina (the light-sensitive tissue at the back of the eye) when the specific type of disorder cannot be determined or is not documented. It is used when a retinal condition is present but lacks sufficient detail for a more specific diagnosis. H35.9 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of choroid and retina (h30-h36).

H35.9 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 the provider documentation does not specify the type of retinal disorder; always query the provider for more specific diagnosis codes when possible, as H35.9 is considered non-specific.