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453 Nodular corneal degeneration, bilateral

H18.459 Nodular corneal degeneration, unspecified eye

H18.46 Peripheral corneal degeneration

H18.461 Peripheral corneal degeneration, right eye

H18.462 Peripheral corneal degeneration, left eye

H18.463 Peripheral corneal degeneration, bilateral

H18.469 Peripheral corneal degeneration, unspecified eye

H18.49 Other corneal degeneration

H18.5 Hereditary corneal dystrophies

H18.50 Unspecified hereditary corneal dystrophies

H18.51 Endothelial corneal dystrophy

Fuchs' dystrophy

H18.52 Epithelial (juvenile) corneal dystrophy

H18.53 Granular corneal dystrophy

H18.54 Lattice corneal dystrophy

H18.55 Macular corneal dystrophy

H18.59 Other hereditary corneal dystrophies

H18.6 Keratoconus

H18.60 Keratoconus, unspecified

H18.601 Keratoconus, unspecified, right eye

H18.602 Keratoconus, unspecified, left eye

H18.603 Keratoconus, unspecified, bilateral

H18.609 Keratoconus, unspecified, unspecified eye

H18.61 Keratoconus, stable

H18.611 Keratoconus, stable, right eye

H18.612 Keratoconus, stable, left eye

H18.613 Keratoconus, stable, bilateral

H18.619 Keratoconus, stable, unspecified eye

H18.62 Keratoconus, unstable

Acute hydrops

H18.621 Keratoconus, unstable, right eye

H18.622 Keratoconus, unstable, left eye

H18.623 Keratoconus, unstable, bilateral

H18.629 Keratoconus, unstable, unspecified eye

H18.7 Other and unspecified corneal deformities

Excludes1: congenital malformations of cornea (Q13.3-Q13.4)

H18.70 Unspecified corneal deformity

H18.71 Corneal ectasia

H18.711 Corneal ectasia, right eye

H18.712 Corneal ectasia, left eye

H18.713 Corneal ectasia, bilateral

H18.719 Corneal ectasia, unspecified eye

H18.72 Corneal staphyloma

H18.721 Corneal staphyloma, right eye

H18.