ICD-10 Code H50.02 – Monocular esotropia with A pattern (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.02 – Monocular esotropia with A pattern
What it is
H50.02 identifies a form of esotropia in which one eye turns inward, and the deviation changes in an A-pattern across gaze positions. Use it when the record specifically documents monocular esotropia with A pattern.
Clinical signs
Typical findings include inward eye deviation that varies between upgaze and downgaze, with one eye consistently involved. Clinical features vary; refer to documentation.
When to use this code
Use this code when the clinician documents monocular esotropia with A pattern on examination or in the assessment. It also fits when the note clearly states an A-pattern strabismus affecting one eye. If the pattern or laterality is unclear, check documentation before coding.
Do not use for
Do not use H50.02 for unspecified esotropia, alternating esotropia, or vertical-pattern deviations without an A pattern. Do not assign it when the chart only mentions strabismus generally.
Coding tip
Confirm both the monocular nature and the A-pattern wording in the provider note before selecting this code.