Nystagmus and other irregular eye movements (H55) ICD-10-CM
The H55 code range covers nystagmus and other irregular eye movements with 12 ICD-10-CM diagnosis codes. 9 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 H55 Range 12 codes · 9 billable
- H55 Nystagmus and other irregular eye movementsNon-billable
- H55.0 NystagmusNon-billable
- H55.00 Unspecified nystagmus
- H55.01 Congenital nystagmus
- H55.02 Latent nystagmus
- H55.03 Visual deprivation nystagmus
- H55.04 Dissociated nystagmus
- H55.09 Other forms of nystagmus
- H55.8 Other irregular eye movementsNon-billable
- H55.81 Deficient saccadic eye movements
- H55.82 Deficient smooth pursuit eye movements
- H55.89 Other irregular eye movements
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the H55 range.
Nystagmus, Congenital
Nystagmus present at birth or caused by lesions sustained in utero or at the time of birth. It is usually pendular, and is associated with ALBINISM and conditions characterized by early loss of central vision. Inheritance patterns may be X-linked, autosomal dominant, or recessive. (Adams et al., Principles of Neurology, 6th ed, p275)
About the H55 Code Range
Nystagmus is an irregular eye movement. This category also includes other irregular eye movements.
H55.0 separates nystagmus into congenital, latent, visual deprivation, dissociated, other and unspecified forms. H55.8 separates other irregular movements into deficient saccadic movements, deficient smooth pursuit movements and other irregular eye movements.
Questions About This Page
How many billable codes are in the H55 range?
Of the 12 codes in this range, 9 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 H55 range classify?
The range classifies nystagmus and other irregular eye movements. 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.
