ICD-10-CM Section · H49-H52
Disorders of ocular muscles, binocular movement, accommodation and refraction
203 codes in this section
203
Total Codes
150
Billable
53
Header (Non-Billable)
4
Top-Level Codes
About Section H49-H52
Section H49-H52 (H49-H52) covers disorders of ocular muscles, binocular movement, accommodation and refraction. It sits within the Diseases of the eye and adnexa chapter (H00-H59). This section contains 203 ICD-10-CM codes, 150 billable diagnoses you can submit on a claim, and 53 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in H49-H52
Grouped by 3-character root code. Click any code for full detail.
H49
Paralytic strabismus
37 subcodes
| H49.0 | Third [oculomotor] nerve palsy | Header |
| H49.00 | Third [oculomotor] nerve palsy, unspecified eye | Billable |
| H49.01 | Third [oculomotor] nerve palsy, right eye | Billable |
| H49.02 | Third [oculomotor] nerve palsy, left eye | Billable |
| H49.03 | Third [oculomotor] nerve palsy, bilateral | Billable |
| H49.1 | Fourth [trochlear] nerve palsy | Header |
| H49.10 | Fourth [trochlear] nerve palsy, unspecified eye | Billable |
| H49.11 | Fourth [trochlear] nerve palsy, right eye | Billable |
| H49.12 | Fourth [trochlear] nerve palsy, left eye | Billable |
| H49.13 | Fourth [trochlear] nerve palsy, bilateral | Billable |
| H49.2 | Sixth [abducent] nerve palsy | Header |
| H49.20 | Sixth [abducent] nerve palsy, unspecified eye | Billable |
| H49.21 | Sixth [abducent] nerve palsy, right eye | Billable |
| H49.22 | Sixth [abducent] nerve palsy, left eye | Billable |
| H49.23 | Sixth [abducent] nerve palsy, bilateral | Billable |
| H49.3 | Total (external) ophthalmoplegia | Header |
| H49.30 | Total (external) ophthalmoplegia, unspecified eye | Billable |
| H49.31 | Total (external) ophthalmoplegia, right eye | Billable |
| H49.32 | Total (external) ophthalmoplegia, left eye | Billable |
| H49.33 | Total (external) ophthalmoplegia, bilateral | Billable |
| H49.4 | Progressive external ophthalmoplegia | Header |
| H49.40 | Progressive external ophthalmoplegia, unspecified eye | Billable |
| H49.41 | Progressive external ophthalmoplegia, right eye | Billable |
| H49.42 | Progressive external ophthalmoplegia, left eye | Billable |
| H49.43 | Progressive external ophthalmoplegia, bilateral | Billable |
| H49.8 | Other paralytic strabismus | Header |
| H49.81 | Kearns-Sayre syndrome | Header |
| H49.811 | Kearns-Sayre syndrome, right eye | Billable |
| H49.812 | Kearns-Sayre syndrome, left eye | Billable |
| H49.813 | Kearns-Sayre syndrome, bilateral | Billable |
| H49.819 | Kearns-Sayre syndrome, unspecified eye | Billable |
| H49.88 | Other paralytic strabismus | Header |
| H49.881 | Other paralytic strabismus, right eye | Billable |
| H49.882 | Other paralytic strabismus, left eye | Billable |
| H49.883 | Other paralytic strabismus, bilateral | Billable |
| H49.889 | Other paralytic strabismus, unspecified eye | Billable |
| H49.9 | Unspecified paralytic strabismus | Billable |
H50
Other strabismus
103 subcodes
| H50.0 | Esotropia | Header |
| H50.00 | Unspecified esotropia | Billable |
| H50.01 | Monocular esotropia | Header |
| H50.011 | Monocular esotropia, right eye | Billable |
| H50.012 | Monocular esotropia, left eye | Billable |
| H50.02 | Monocular esotropia with A pattern | Header |
| H50.021 | Monocular esotropia with A pattern, right eye | Billable |
| H50.022 | Monocular esotropia with A pattern, left eye | Billable |
| H50.03 | Monocular esotropia with V pattern | Header |
| H50.031 | Monocular esotropia with V pattern, right eye | Billable |
| H50.032 | Monocular esotropia with V pattern, left eye | Billable |
| H50.04 | Monocular esotropia with other noncomitancies | Header |
| H50.041 | Monocular esotropia with other noncomitancies, right eye | Billable |
| H50.042 | Monocular esotropia with other noncomitancies, left eye | Billable |
| H50.05 | Alternating esotropia | Billable |
| H50.06 | Alternating esotropia with A pattern | Billable |
| H50.07 | Alternating esotropia with V pattern | Billable |
| H50.08 | Alternating esotropia with other noncomitancies | Billable |
| H50.1 | Exotropia | Header |
| H50.10 | Unspecified exotropia | Billable |
| H50.11 | Monocular exotropia | Header |
| H50.111 | Monocular exotropia, right eye | Billable |
| H50.112 | Monocular exotropia, left eye | Billable |
| H50.12 | Monocular exotropia with A pattern | Header |
| H50.121 | Monocular exotropia with A pattern, right eye | Billable |
| H50.122 | Monocular exotropia with A pattern, left eye | Billable |
| H50.13 | Monocular exotropia with V pattern | Header |
| H50.131 | Monocular exotropia with V pattern, right eye | Billable |
| H50.132 | Monocular exotropia with V pattern, left eye | Billable |
| H50.14 | Monocular exotropia with other noncomitancies | Header |
| H50.141 | Monocular exotropia with other noncomitancies, right eye | Billable |
| H50.142 | Monocular exotropia with other noncomitancies, left eye | Billable |
| H50.15 | Alternating exotropia | Billable |
| H50.16 | Alternating exotropia with A pattern | Billable |
| H50.17 | Alternating exotropia with V pattern | Billable |
| H50.18 | Alternating exotropia with other noncomitancies | Billable |
| H50.2 | Vertical strabismus | Header |
| H50.21 | Vertical strabismus, right eye | Billable |
| H50.22 | Vertical strabismus, left eye | Billable |
| H50.3 | Intermittent heterotropia | Header |
| H50.30 | Unspecified intermittent heterotropia | Billable |
| H50.31 | Intermittent monocular esotropia | Header |
| H50.311 | Intermittent monocular esotropia, right eye | Billable |
| H50.312 | Intermittent monocular esotropia, left eye | Billable |
| H50.32 | Intermittent alternating esotropia | Billable |
| H50.33 | Intermittent monocular exotropia | Header |
| H50.331 | Intermittent monocular exotropia, right eye | Billable |
| H50.332 | Intermittent monocular exotropia, left eye | Billable |
| H50.34 | Intermittent alternating exotropia | Billable |
| H50.4 | Other and unspecified heterotropia | Header |
| H50.40 | Unspecified heterotropia | Billable |
| H50.41 | Cyclotropia | Header |
| H50.411 | Cyclotropia, right eye | Billable |
| H50.412 | Cyclotropia, left eye | Billable |
| H50.42 | Monofixation syndrome | Billable |
| H50.43 | Accommodative component in esotropia | Billable |
| H50.5 | Heterophoria | Header |
| H50.50 | Unspecified heterophoria | Billable |
| H50.51 | Esophoria | Billable |
| H50.52 | Exophoria | Billable |
| H50.53 | Vertical heterophoria | Billable |
| H50.54 | Cyclophoria | Billable |
| H50.55 | Alternating heterophoria | Billable |
| H50.6 | Mechanical strabismus | Header |
| H50.60 | Mechanical strabismus, unspecified | Billable |
| H50.61 | Brown's sheath syndrome | Header |
| H50.611 | Brown's sheath syndrome, right eye | Billable |
| H50.612 | Brown's sheath syndrome, left eye | Billable |
| H50.62 | Inferior oblique muscle entrapment | Header |
| H50.621 | Inferior oblique muscle entrapment, right eye | Billable |
| H50.622 | Inferior oblique muscle entrapment, left eye | Billable |
| H50.629 | Inferior oblique muscle entrapment, unspecified eye | Billable |
| H50.63 | Inferior rectus muscle entrapment | Header |
| H50.631 | Inferior rectus muscle entrapment, right eye | Billable |
| H50.632 | Inferior rectus muscle entrapment, left eye | Billable |
| H50.639 | Inferior rectus muscle entrapment, unspecified eye | Billable |
| H50.64 | Lateral rectus muscle entrapment | Header |
| H50.641 | Lateral rectus muscle entrapment, right eye | Billable |
| H50.642 | Lateral rectus muscle entrapment, left eye | Billable |
| H50.649 | Lateral rectus muscle entrapment, unspecified eye | Billable |
| H50.65 | Medial rectus muscle entrapment | Header |
| H50.651 | Medial rectus muscle entrapment, right eye | Billable |
| H50.652 | Medial rectus muscle entrapment, left eye | Billable |
| H50.659 | Medial rectus muscle entrapment, unspecified eye | Billable |
| H50.66 | Superior oblique muscle entrapment | Header |
| H50.661 | Superior oblique muscle entrapment, right eye | Billable |
| H50.662 | Superior oblique muscle entrapment, left eye | Billable |
| H50.669 | Superior oblique muscle entrapment, unspecified eye | Billable |
| H50.67 | Superior rectus muscle entrapment | Header |
| H50.671 | Superior rectus muscle entrapment, right eye | Billable |
| H50.672 | Superior rectus muscle entrapment, left eye | Billable |
| H50.679 | Superior rectus muscle entrapment, unspecified eye | Billable |
| H50.68 | Extraocular muscle entrapment, unspecified | Header |
| H50.681 | Extraocular muscle entrapment, unspecified, right eye | Billable |
| H50.682 | Extraocular muscle entrapment, unspecified, left eye | Billable |
| H50.689 | Extraocular muscle entrapment, unspecified, unspecified eye | Billable |
| H50.69 | Other mechanical strabismus | Billable |
| H50.8 | Other specified strabismus | Header |
| H50.81 | Duane's syndrome | Header |
| H50.811 | Duane's syndrome, right eye | Billable |
| H50.812 | Duane's syndrome, left eye | Billable |
| H50.89 | Other specified strabismus | Billable |
| H50.9 | Unspecified strabismus | Billable |
H51
Other disorders of binocular movement
11 subcodes
| H51.0 | Palsy (spasm) of conjugate gaze | Billable |
| H51.1 | Convergence insufficiency and excess | Header |
| H51.11 | Convergence insufficiency | Billable |
| H51.12 | Convergence excess | Billable |
| H51.2 | Internuclear ophthalmoplegia | Header |
| H51.20 | Internuclear ophthalmoplegia, unspecified eye | Billable |
| H51.21 | Internuclear ophthalmoplegia, right eye | Billable |
| H51.22 | Internuclear ophthalmoplegia, left eye | Billable |
| H51.23 | Internuclear ophthalmoplegia, bilateral | Billable |
| H51.8 | Other specified disorders of binocular movement | Billable |
| H51.9 | Unspecified disorder of binocular movement | Billable |
H52
Disorders of refraction and accommodation
48 subcodes
| H52.0 | Hypermetropia | Header |
| H52.00 | Hypermetropia, unspecified eye | Billable |
| H52.01 | Hypermetropia, right eye | Billable |
| H52.02 | Hypermetropia, left eye | Billable |
| H52.03 | Hypermetropia, bilateral | Billable |
| H52.1 | Myopia | Header |
| H52.10 | Myopia, unspecified eye | Billable |
| H52.11 | Myopia, right eye | Billable |
| H52.12 | Myopia, left eye | Billable |
| H52.13 | Myopia, bilateral | Billable |
| H52.2 | Astigmatism | Header |
| H52.20 | Unspecified astigmatism | Header |
| H52.201 | Unspecified astigmatism, right eye | Billable |
| H52.202 | Unspecified astigmatism, left eye | Billable |
| H52.203 | Unspecified astigmatism, bilateral | Billable |
| H52.209 | Unspecified astigmatism, unspecified eye | Billable |
| H52.21 | Irregular astigmatism | Header |
| H52.211 | Irregular astigmatism, right eye | Billable |
| H52.212 | Irregular astigmatism, left eye | Billable |
| H52.213 | Irregular astigmatism, bilateral | Billable |
| H52.219 | Irregular astigmatism, unspecified eye | Billable |
| H52.22 | Regular astigmatism | Header |
| H52.221 | Regular astigmatism, right eye | Billable |
| H52.222 | Regular astigmatism, left eye | Billable |
| H52.223 | Regular astigmatism, bilateral | Billable |
| H52.229 | Regular astigmatism, unspecified eye | Billable |
| H52.3 | Anisometropia and aniseikonia | Header |
| H52.31 | Anisometropia | Billable |
| H52.32 | Aniseikonia | Billable |
| H52.4 | Presbyopia | Billable |
| H52.5 | Disorders of accommodation | Header |
| H52.51 | Internal ophthalmoplegia (complete) (total) | Header |
| H52.511 | Internal ophthalmoplegia (complete) (total), right eye | Billable |
| H52.512 | Internal ophthalmoplegia (complete) (total), left eye | Billable |
| H52.513 | Internal ophthalmoplegia (complete) (total), bilateral | Billable |
| H52.519 | Internal ophthalmoplegia (complete) (total), unspecified eye | Billable |
| H52.52 | Paresis of accommodation | Header |
| H52.521 | Paresis of accommodation, right eye | Billable |
| H52.522 | Paresis of accommodation, left eye | Billable |
| H52.523 | Paresis of accommodation, bilateral | Billable |
| H52.529 | Paresis of accommodation, unspecified eye | Billable |
| H52.53 | Spasm of accommodation | Header |
| H52.531 | Spasm of accommodation, right eye | Billable |
| H52.532 | Spasm of accommodation, left eye | Billable |
| H52.533 | Spasm of accommodation, bilateral | Billable |
| H52.539 | Spasm of accommodation, unspecified eye | Billable |
| H52.6 | Other disorders of refraction | Billable |
| H52.7 | Unspecified disorder of refraction | Billable |
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Verified against the CMS 2026 code set on May 31, 2026.
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