H18.6 KeratoconusNon-billable header with 3 child codes.
H18.59 Other hereditary corneal dystrophiesH18.591 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 (this code)H18.60 Keratoconus, unspecifiedH18.601 Keratoconus, unspecified, right eyeH18.602 Keratoconus, unspecified, left eyeH18.603 Keratoconus, unspecified, bilateralH18.609 Keratoconus, unspecified, unspecified eye