| H5220 | Unspecified astigmatism |
| H52201 | Unspecified astigmatism, right eye |
| H52202 | Unspecified astigmatism, left eye |
| H52203 | Unspecified astigmatism, bilateral |
| H52209 | Unspecified astigmatism, unspecified eye |
| H5221 | Irregular astigmatism |
| H52211 | Irregular astigmatism, right eye |
| H52212 | Irregular astigmatism, left eye |
| H52213 | Irregular astigmatism, bilateral |
| H52219 | Irregular astigmatism, unspecified eye |
| H5222 | Regular astigmatism |
| H52221 | Regular astigmatism, right eye |
| H52222 | Regular astigmatism, left eye |
| H52223 | Regular astigmatism, bilateral |
| H52229 | Regular astigmatism, unspecified eye |
| H523 | Anisometropia and aniseikonia |
| H5231 | Anisometropia |
| H5232 | Aniseikonia |
| H524 | Presbyopia |
| H525 | Disorders of accommodation |
| H5251 | Internal ophthalmoplegia (complete) (total) |
| H52511 | Internal ophthalmoplegia (complete) (total), right eye |
| H52512 | Internal ophthalmoplegia (complete) (total), left eye |
| H52513 | Internal ophthalmoplegia (complete) (total), bilateral |
| H52519 | Internal ophthalmoplegia (complete) (total), unspecified eye Internal ophthalmoplegia (complete) (total), unspecified eye |
| H5252 | Paresis of accommodation |
| H52521 | Paresis of accommodation, right eye |
| H52522 | Paresis of accommodation, left eye |
| H52523 | Paresis of accommodation, bilateral |
| H52529 | Paresis of accommodation, unspecified eye |
| H5253 | Spasm of accommodation |
| H52531 | Spasm of accommodation, right eye |
| H52532 | Spasm of accommodation, left eye |
| H52533 | Spasm of accommodation, bilateral |
| H52539 | Spasm of accommodation, unspecified eye |
| H526 | Other disorders of refraction |
| H527 | Unspecified disorder of refraction |
| H53 | Visual disturbances |
| H530 | Amblyopia ex anopsia |
| H5300 | Unspecified amblyopia |
| H53001 | Unspecified amblyopia, right eye |
| H53002 | Unspecified amblyopia, left eye |
| H53003 | Unspecified amblyopia, bilateral |
| H53009 | Unspecified amblyopia, unspecified eye |
| H5301 | Deprivation amblyopia |
| H53011 | Deprivation amblyopia, right eye |
| H53012 | Deprivation amblyopia, left eye |
| H53013 | Deprivation amblyopia, bilateral |
| H53019 | Deprivation amblyopia, unspecified eye |
| H5302 | Refractive amblyopia |