ICD-10 Code H55.8 – Other irregular eye movements (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H55.8 – Other irregular eye movements
What it is
H55.8 identifies irregular eye movements that do not fit a more specific nystagmus or ocular motility code. Use it when the record describes atypical, involuntary, or otherwise unspecified irregular movement of the eyes.
Clinical signs
Clinical features vary; refer to documentation. You may see abnormal, jerky, oscillating, or poorly coordinated eye movements noted on exam, with or without associated dizziness, visual disturbance, or imbalance.
When to use this code
Use this code when the clinician documents other irregular eye movements and does not name a more specific diagnosis. It also fits cases where the eye movement pattern is described, but the record does not support a more specific nystagmus code. Check documentation if the term is vague.
Do not use for
Do not use H55.8 for clearly documented nystagmus types that have their own codes. If the chart describes normal eye movements, voluntary tracking, or a different neurologic disorder, select the more accurate diagnosis.
Coding tip
Code the most specific eye movement term documented, and query the provider when “irregular eye movements” is nonspecific.