H18.591 ICD-10-CM Code: Other hereditary corneal dystrophies, right eye

H18.591 is the ICD-10-CM diagnosis code for other hereditary corneal dystrophies, right eye. This code describes a genetic eye condition affecting the cornea (the clear front part of the eye) on the right side that doesn't fit into other specific hereditary corneal disease categories. These inherited disorders cause progressive damage to the cornea that can affect vision over time. H18.591 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of sclera, cornea, iris and ciliary body (h15-h22).

H18.591 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.

Verify the specific type of hereditary corneal dystrophy documented by the provider, as more specific codes (H18.50-H18.59) may be available for conditions like lattice dystrophy, granular dystrophy, or Fuchs' dystrophy.