ICD-10-CM > H00-H59 > H15-H22 > H18 > H18.5 > H18.59 H18.59 Other hereditary corneal dystrophies Non-Billable/Non-Specific Codes H18.591Other hereditary corneal dystrophies, right eyeH18.592Other hereditary corneal dystrophies, left eyeH18.593Other hereditary corneal dystrophies, bilateralH18.599Other hereditary corneal dystrophies, unspecified eye