ICD-10 Code H50.31 – Intermittent monocular esotropia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.31 – Intermittent monocular esotropia
What it is
H50.31 identifies intermittent inward turning of one eye. The deviation is not constant, so the eye may appear aligned at times and esotropic at others.
Clinical signs
Clinical features vary; refer to documentation. Commonly, you may see episodic eye misalignment, especially when the patient is fatigued, inattentive, or focusing at a distance.
When to use this code
Use this code when the provider documents intermittent esotropia affecting only one eye. It is appropriate when the record clearly distinguishes the condition from constant strabismus or alternating deviation. Check documentation if the note does not specify laterality or intermittency.
Do not use for
Do not use this code for constant esotropia, alternating esotropia, or unspecified strabismus. If the diagnosis is described differently, code the documented condition instead.
Coding tip
Confirm both intermittency and monocular involvement in the assessment before assigning H50.31.