| H18.50 | Unspecified hereditary corneal dystrophies | NON-BILLABLE CODE |
| H18.501 | Unspecified hereditary corneal dystrophies, right eye | BILLABLE CODE |
| H18.502 | Unspecified hereditary corneal dystrophies, left eye | BILLABLE CODE |
| H18.503 | Unspecified hereditary corneal dystrophies, bilateral | BILLABLE CODE |
| H18.509 | Unspecified hereditary corneal dystrophies, unspecified eye | BILLABLE CODE |
| H18.51 | Endothelial corneal dystrophy | NON-BILLABLE CODE |
| H18.511 | Endothelial corneal dystrophy, right eye | BILLABLE CODE |
| H18.512 | Endothelial corneal dystrophy, left eye | BILLABLE CODE |
| H18.513 | Endothelial corneal dystrophy, bilateral | BILLABLE CODE |
| H18.519 | Endothelial corneal dystrophy, unspecified eye | BILLABLE CODE |
| H18.52 | Epithelial (juvenile) corneal dystrophy | NON-BILLABLE CODE |
| H18.521 | Epithelial (juvenile) corneal dystrophy, right eye | BILLABLE CODE |
| H18.522 | Epithelial (juvenile) corneal dystrophy, left eye | BILLABLE CODE |
| H18.523 | Epithelial (juvenile) corneal dystrophy, bilateral | BILLABLE CODE |
| H18.529 | Epithelial (juvenile) corneal dystrophy, unspecified eye | BILLABLE CODE |
| H18.53 | Granular corneal dystrophy | NON-BILLABLE CODE |
| H18.531 | Granular corneal dystrophy, right eye | BILLABLE CODE |
| H18.532 | Granular corneal dystrophy, left eye | BILLABLE CODE |
| H18.533 | Granular corneal dystrophy, bilateral | BILLABLE CODE |
| H18.539 | Granular corneal dystrophy, unspecified eye | BILLABLE CODE |
| H18.54 | Lattice corneal dystrophy | NON-BILLABLE CODE |
| H18.541 | Lattice corneal dystrophy, right eye | BILLABLE CODE |
| H18.542 | Lattice corneal dystrophy, left eye | BILLABLE CODE |
| H18.543 | Lattice corneal dystrophy, bilateral | BILLABLE CODE |
| H18.549 | Lattice corneal dystrophy, unspecified eye | BILLABLE CODE |
| H18.55 | Macular corneal dystrophy | NON-BILLABLE CODE |
| H18.551 | Macular corneal dystrophy, right eye | BILLABLE CODE |
| H18.552 | Macular corneal dystrophy, left eye | BILLABLE CODE |
| H18.553 | Macular corneal dystrophy, bilateral | BILLABLE CODE |
| H18.559 | Macular corneal dystrophy, unspecified eye | BILLABLE CODE |
| H18.59 | Other hereditary corneal dystrophies | NON-BILLABLE CODE |
| H18.591 | Other hereditary corneal dystrophies, right eye | BILLABLE CODE |
| H18.592 | Other hereditary corneal dystrophies, left eye | BILLABLE CODE |
| H18.593 | Other hereditary corneal dystrophies, bilateral | BILLABLE CODE |
| H18.599 | Other hereditary corneal dystrophies, unspecified eye | BILLABLE CODE |
