H57.04 Mydriasis

Billable ICD-10-CM code, FY2026.

MS-DRG index

Defines the logic of DRG(s) 123 in MDC 02.

Approximate ICD-9-CM (GEMs)

• 379.43 Mydriasis (persistent), not due to mydriatics

Code annotations containing back-references to H57.04

Back-references to H57.0

• Type 2 Excludes: R29.2 Abnormal reflex ("abnormal pupillary reflex (H57.0)")

Diagnosis Index entries for H57.04

• Anomaly, anomalous (congenital) (unspecified type) › pupil › function › mydriasis
• Dilatation › pupil
• Mydriasis (pupil)

Nearby codes

• H57.0 Anomalies of pupillary function
• H57.00 Unspecified anomaly of pupillary function
• H57.01 Argyll Robertson pupil, atypical
• H57.02 Anisocoria
• H57.03 Miosis
• H57.04 Mydriasis (this code)
• H57.05 Tonic pupil
• H57.051 Tonic pupil, right eye
• H57.052 Tonic pupil, left eye
• H57.053 Tonic pupil, bilateral
• H57.059 Tonic pupil, unspecified eye