| H18.451 | Nodular corneal degeneration, right eye | BILLABLE CODE |
| H18.452 | Nodular corneal degeneration, left eye | BILLABLE CODE |
| H18.453 | Nodular corneal degeneration, bilateral | BILLABLE CODE |
| H18.459 | Nodular corneal degeneration, unspecified eye | BILLABLE CODE |
