H55.00 Unspecified nystagmus

Billable ICD-10-CM code, FY2026.

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 379.50 Nystagmus, unspecified

Diagnosis Index entries for H55.00

• Nystagmus

Nearby codes

• H55 Nystagmus and other irregular eye movements
• H55.0 Nystagmus
• H55.00 Unspecified nystagmus (this code)
• H55.01 Congenital nystagmus
• H55.02 Latent nystagmus
• H55.03 Visual deprivation nystagmus
• H55.04 Dissociated nystagmus
• H55.09 Other forms of nystagmus