ICD-10 Code H50.331 – Intermittent monocular exotropia, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.331 – Intermittent monocular exotropia, right eye
What it is
Intermittent monocular exotropia means the right eye drifts outward only part of the time, rather than constantly. You use this code when the deviation is limited to one eye and documented as intermittent.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the right eye shows occasional outward deviation, often more noticeable when the patient is tired or daydreaming, with periods of normal alignment between episodes.
When to use this code
Use H50.331 when the provider documents intermittent exotropia affecting only the right eye. It fits outpatient ophthalmology or pediatric eye evaluations when the laterality and intermittent pattern are clearly stated. If the note only says exotropia, check documentation before coding.
Do not use for
Do not use this code for constant exotropia, alternating exotropia, or unspecified laterality. If the record does not confirm the right eye or the intermittent nature, you should not assume H50.331.
Coding tip
Capture both laterality and intermittency exactly as documented; if either is missing, query the provider.