Other strabismus (H50) ICD-10-CM
The H50 code range covers other strabismus with 104 ICD-10-CM diagnosis codes. 75 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the H50 Range 104 codes · 75 billable
- H50 Other strabismusNon-billable
- H50.0 EsotropiaNon-billable
- H50.00 Unspecified esotropia
- H50.01 Monocular esotropiaNon-billable
- H50.011 Monocular esotropia, right eye
- H50.012 Monocular esotropia, left eye
- H50.02 Monocular esotropia with A patternNon-billable
- H50.021 Monocular esotropia with A pattern, right eye
- H50.022 Monocular esotropia with A pattern, left eye
- H50.03 Monocular esotropia with V patternNon-billable
- H50.031 Monocular esotropia with V pattern, right eye
- H50.032 Monocular esotropia with V pattern, left eye
- H50.04 Monocular esotropia with other noncomitanciesNon-billable
- H50.041 Monocular esotropia with other noncomitancies, right eye
- H50.042 Monocular esotropia with other noncomitancies, left eye
- H50.05 Alternating esotropia
- H50.06 Alternating esotropia with A pattern
- H50.07 Alternating esotropia with V pattern
- H50.08 Alternating esotropia with other noncomitancies
- H50.1 ExotropiaNon-billable
- H50.10 Unspecified exotropia
- H50.11 Monocular exotropiaNon-billable
- H50.111 Monocular exotropia, right eye
- H50.112 Monocular exotropia, left eye
- H50.12 Monocular exotropia with A patternNon-billable
- H50.121 Monocular exotropia with A pattern, right eye
- H50.122 Monocular exotropia with A pattern, left eye
- H50.13 Monocular exotropia with V patternNon-billable
- H50.131 Monocular exotropia with V pattern, right eye
- H50.132 Monocular exotropia with V pattern, left eye
- H50.14 Monocular exotropia with other noncomitanciesNon-billable
- H50.141 Monocular exotropia with other noncomitancies, right eye
- H50.142 Monocular exotropia with other noncomitancies, left eye
- H50.15 Alternating exotropia
- H50.16 Alternating exotropia with A pattern
- H50.17 Alternating exotropia with V pattern
- H50.18 Alternating exotropia with other noncomitancies
- H50.2 Vertical strabismusNon-billable
- H50.21 Vertical strabismus, right eye
- H50.22 Vertical strabismus, left eye
- H50.3 Intermittent heterotropiaNon-billable
- H50.30 Unspecified intermittent heterotropia
- H50.31 Intermittent monocular esotropiaNon-billable
- H50.311 Intermittent monocular esotropia, right eye
- H50.312 Intermittent monocular esotropia, left eye
- H50.32 Intermittent alternating esotropia
- H50.33 Intermittent monocular exotropiaNon-billable
- H50.331 Intermittent monocular exotropia, right eye
- H50.332 Intermittent monocular exotropia, left eye
- H50.34 Intermittent alternating exotropia
- H50.4 Other and unspecified heterotropiaNon-billable
- H50.40 Unspecified heterotropia
- H50.41 CyclotropiaNon-billable
- H50.411 Cyclotropia, right eye
- H50.412 Cyclotropia, left eye
- H50.42 Monofixation syndrome
- H50.43 Accommodative component in esotropia
- H50.5 HeterophoriaNon-billable
- H50.50 Unspecified heterophoria
- H50.51 Esophoria
- H50.52 Exophoria
- H50.53 Vertical heterophoria
- H50.54 Cyclophoria
- H50.55 Alternating heterophoria
- H50.6 Mechanical strabismusNon-billable
- H50.60 Mechanical strabismus, unspecified
- H50.61 Brown's sheath syndromeNon-billable
- H50.611 Brown's sheath syndrome, right eye
- H50.612 Brown's sheath syndrome, left eye
- H50.62 Inferior oblique muscle entrapmentNon-billable
- H50.621 Inferior oblique muscle entrapment, right eye
- H50.622 Inferior oblique muscle entrapment, left eye
- H50.629 Inferior oblique muscle entrapment, unspecified eye
- H50.63 Inferior rectus muscle entrapmentNon-billable
- H50.631 Inferior rectus muscle entrapment, right eye
- H50.632 Inferior rectus muscle entrapment, left eye
- H50.639 Inferior rectus muscle entrapment, unspecified eye
- H50.64 Lateral rectus muscle entrapmentNon-billable
- H50.641 Lateral rectus muscle entrapment, right eye
- H50.642 Lateral rectus muscle entrapment, left eye
- H50.649 Lateral rectus muscle entrapment, unspecified eye
- H50.65 Medial rectus muscle entrapmentNon-billable
- H50.651 Medial rectus muscle entrapment, right eye
- H50.652 Medial rectus muscle entrapment, left eye
- H50.659 Medial rectus muscle entrapment, unspecified eye
- H50.66 Superior oblique muscle entrapmentNon-billable
- H50.661 Superior oblique muscle entrapment, right eye
- H50.662 Superior oblique muscle entrapment, left eye
- H50.669 Superior oblique muscle entrapment, unspecified eye
- H50.67 Superior rectus muscle entrapmentNon-billable
- H50.671 Superior rectus muscle entrapment, right eye
- H50.672 Superior rectus muscle entrapment, left eye
- H50.679 Superior rectus muscle entrapment, unspecified eye
- H50.68 Extraocular muscle entrapment, unspecifiedNon-billable
- H50.681 Extraocular muscle entrapment, unspecified, right eye
- H50.682 Extraocular muscle entrapment, unspecified, left eye
- H50.689 Extraocular muscle entrapment, unspecified, unspecified eye
- H50.69 Other mechanical strabismus
- H50.8 Other specified strabismusNon-billable
- H50.81 Duane's syndromeNon-billable
- H50.811 Duane's syndrome, right eye
- H50.812 Duane's syndrome, left eye
- H50.89 Other specified strabismus
- H50.9 Unspecified strabismus
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the H50 range.
Duane Retraction Syndrome
A syndrome characterized by marked limitation of abduction of the eye, variable limitation of adduction and retraction of the globe, and narrowing of the palpebral fissure on attempted adduction. The condition is caused by aberrant innervation of the lateral rectus by fibers of the OCULOMOTOR NERVE.
Esotropia
A form of ocular misalignment characterized by an excessive convergence of the visual axes, resulting in a cross-eye appearance. An example of this condition occurs when paralysis of the lateral rectus muscle causes an abnormal inward deviation of one eye on attempted gaze.
Exotropia
A form of ocular misalignment where the visual axes diverge inappropriately. For example, medial rectus muscle weakness may produce this condition as the affected eye will deviate laterally upon attempted forward gaze. An exotropia occurs due to the relatively unopposed force exerted on the eye by the lateral rectus muscle, which pulls the eye in an outward direction.
Strabismus
Misalignment of the visual axes of the eyes. In comitant strabismus the degree of ocular misalignment does not vary with the direction of gaze. In noncomitant strabismus the degree of misalignment varies depending on direction of gaze or which eye is fixating on the target. (Miller, Walsh & Hoyt's Clinical Neuro-Ophthalmology, 4th ed, p641)
About the H50 Code Range
Strabismus means the eyes do not line up. This category separates forms of strabismus by the type of eye position or movement named in the code.
H50.0 identifies esotropia, and H50.1 identifies exotropia. Both separate one-eye and alternating forms, then distinguish A patterns, V patterns, and other noncomitancies. H50.2 separates vertical strabismus by right or left eye. H50.3 groups intermittent forms by esotropia or exotropia and by one-eye or alternating involvement.
Other subdivisions identify heterotropia, heterophoria, and mechanical strabismus. Mechanical strabismus includes distinctions by the muscle trapped. The category also has other specified and unspecified strabismus codes.
Questions About This Page
How many billable codes are in the H50 range?
Of the 104 codes in this range, 75 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the H50 range classify?
The range classifies other strabismus. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
