| H52 | Disorders of refraction and accommodation | NON-BILLABLE CODE |
| H52.0 | Hypermetropia | NON-BILLABLE CODE |
| H52.00 | Hypermetropia, unspecified eye | BILLABLE CODE |
| H52.01 | Hypermetropia, right eye | BILLABLE CODE |
| H52.02 | Hypermetropia, left eye | BILLABLE CODE |
| H52.1 | Myopia | NON-BILLABLE CODE |
| H52.10 | Myopia, unspecified eye | BILLABLE CODE |
| H52.11 | Myopia, right eye | BILLABLE CODE |
| H52.12 | Myopia, left eye | BILLABLE CODE |
| H52.13 | Myopia, bilateral | BILLABLE CODE |
| H52.2 | Astigmatism | NON-BILLABLE CODE |
| H52.20 | Unspecified astigmatism | NON-BILLABLE CODE |
| H52.201 | Unspecified astigmatism, right eye | BILLABLE CODE |
| H52.202 | Unspecified astigmatism, left eye | BILLABLE CODE |
| H52.203 | Unspecified astigmatism, bilateral | BILLABLE CODE |
| H52.209 | Unspecified astigmatism, unspecified eye | BILLABLE CODE |
| H52.21 | Irregular astigmatism | NON-BILLABLE CODE |
| H52.211 | Irregular astigmatism, right eye | BILLABLE CODE |
| H52.212 | Irregular astigmatism, left eye | BILLABLE CODE |
| H52.213 | Irregular astigmatism, bilateral | BILLABLE CODE |
| H52.219 | Irregular astigmatism, unspecified eye | BILLABLE CODE |
| H52.22 | Regular astigmatism | NON-BILLABLE CODE |
| H52.221 | Regular astigmatism, right eye | BILLABLE CODE |
| H52.222 | Regular astigmatism, left eye | BILLABLE CODE |
| H52.223 | Regular astigmatism, bilateral | BILLABLE CODE |
| H52.229 | Regular astigmatism, unspecified eye | BILLABLE CODE |
| H52.3 | Anisometropia and aniseikonia | NON-BILLABLE CODE |
| H52.31 | Anisometropia | BILLABLE CODE |
| H52.32 | Aniseikonia | BILLABLE CODE |
| H52.4 | Presbyopia | BILLABLE CODE |
| H52.5 | Disorders of accommodation | NON-BILLABLE CODE |
| H52.51 | Internal ophthalmoplegia (complete) (total) | NON-BILLABLE CODE |
| H52.511 | Internal ophthalmoplegia (complete) (total), right eye | BILLABLE CODE |
| H52.512 | Internal ophthalmoplegia (complete) (total), left eye | BILLABLE CODE |
| H52.513 | Internal ophthalmoplegia (complete) (total), bilateral | BILLABLE CODE |
| H52.519 | Internal ophthalmoplegia (complete) (total), unspecified eye | BILLABLE CODE |
| H52.52 | Paresis of accommodation | NON-BILLABLE CODE |
| H52.521 | Paresis of accommodation, right eye | BILLABLE CODE |
| H52.522 | Paresis of accommodation, left eye | BILLABLE CODE |
| H52.523 | Paresis of accommodation, bilateral | BILLABLE CODE |
| H52.529 | Paresis of accommodation, unspecified eye | BILLABLE CODE |
| H52.53 | Spasm of accommodation | NON-BILLABLE CODE |
| H52.531 | Spasm of accommodation, right eye | BILLABLE CODE |
| H52.532 | Spasm of accommodation, left eye | BILLABLE CODE |
| H52.533 | Spasm of accommodation, bilateral | BILLABLE CODE |
| H52.539 | Spasm of accommodation, unspecified eye | BILLABLE CODE |
| H52.6 | Other disorders of refraction | BILLABLE CODE |
| H52.7 | Unspecified disorder of refraction | BILLABLE CODE |
