ICD-10 Code H55.89 – Other irregular eye movements (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H55.89 – Other irregular eye movements
What it is
H55.89 identifies irregular eye movements that do not fit a more specific ICD-10 category. Use it for abnormal ocular motion documented by the clinician when the exact movement pattern is not otherwise classified.
Clinical signs
Findings may include involuntary, erratic, or atypical eye movements noted on examination. Clinical features vary; refer to documentation for the exact description and whether the movement is continuous, intermittent, or associated with another disorder.
When to use this code
Use this code when the record clearly describes abnormal eye movements but does not support a more specific diagnosis such as nystagmus subtype or another defined ocular motor disorder. It is appropriate when the provider documents an unspecified irregular movement pattern and no better code applies.
Do not use for
Do not use H55.89 when the chart supports a more specific eye movement diagnosis, including a named nystagmus type. Do not assign it for normal eye tracking or for symptoms not documented as an abnormal movement.
Coding tip
Check the provider’s wording carefully and code the most specific eye movement disorder documented.