H18.59 Other hereditary corneal dystrophiesNon-billable header with 4 child codes.
H18.591 Other hereditary corneal dystrophies, right eyeH18.592 Other hereditary corneal dystrophies, left eyeH18.593 Other hereditary corneal dystrophies, bilateralH18.599 Other hereditary corneal dystrophies, unspecified eye371.52 Other anterior corneal dystrophies (approximate)H18.55 Macular corneal dystrophyH18.551 Macular corneal dystrophy, right eyeH18.552 Macular corneal dystrophy, left eyeH18.553 Macular corneal dystrophy, bilateralH18.559 Macular corneal dystrophy, unspecified eyeH18.59 Other hereditary corneal dystrophies (this code)H18.591 Other hereditary corneal dystrophies, right eyeH18.592 Other hereditary corneal dystrophies, left eyeH18.593 Other hereditary corneal dystrophies, bilateralH18.599 Other hereditary corneal dystrophies, unspecified eyeH18.6 Keratoconus