ICD-10 Code H51.9 – Unspecified disorder of binocular movement (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H51.9 – Unspecified disorder of binocular movement
What it is
H51.9 identifies a disorder affecting coordinated eye movement between both eyes when the exact type is not specified. Use it when documentation indicates a binocular movement problem but does not name a more specific diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records may describe abnormal eye alignment, impaired conjugate gaze, or difficulty moving both eyes together. Confirm that the provider documents a binocular movement disorder.
When to use this code
Use H51.9 when the clinician documents an unspecified disorder of binocular movement and no further detail is available. This may occur in initial evaluations, incomplete notes, or when the exact motility disorder is not established. Code the documented condition, not a suspected cause.
Do not use for
Do not use this code for a clearly identified binocular movement disorder with a more specific ICD-10-CM code. Do not assign it when documentation only describes blurred vision, diplopia, or another symptom without a binocular movement diagnosis.
Coding tip
If the chart is vague, check documentation for the specific eye movement diagnosis before defaulting to H51.9.