H50.42 Monofixation syndrome

Billable ICD-10-CM code, FY2026.

MS-DRG index

Defines the logic of DRG(s) 124-125 in MDC 02.

Approximate ICD-9-CM (GEMs)

• 378.34 Monofixation syndrome

Code annotations containing back-references to H50.42

Back-references to H50

• Type 2 Excludes: H53.03 Strabismic amblyopia ("strabismus (H50.-)")

Diagnosis Index entries for H50.42

• Strabismus (congenital) (nonparalytic) › monofixation syndrome
• Syndrome › monofixation

Nearby codes

• H50.4 Other and unspecified heterotropia
• H50.40 Unspecified heterotropia
• H50.41 Cyclotropia
• H50.411 Cyclotropia, right eye
• H50.412 Cyclotropia, left eye
• H50.42 Monofixation syndrome (this code)
• H50.43 Accommodative component in esotropia
• H50.5 Heterophoria
• H50.50 Unspecified heterophoria
• H50.51 Esophoria
• H50.52 Exophoria