ICD-10 Code H50.06 – Alternating esotropia with A pattern (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.06 – Alternating esotropia with A pattern
What it is
H50.06 identifies alternating esotropia with an A pattern, a form of inward eye deviation that changes with gaze position. The deviation alternates between eyes and shows a larger inward turn in upgaze than in downgaze.
Clinical signs
You may see alternating ocular misalignment, diplopia in some patients, and a measurable A-pattern on cover testing or prism measurements. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record specifically documents alternating esotropia with an A pattern. It fits ophthalmology or optometry assessments that describe the pattern and the alternating nature of the deviation. If the note only says esotropia, check documentation for the pattern and laterality details.
Do not use for
Do not use this code for esotropia without an A-pattern finding, or for exotropia and other strabismus types. If the pattern is not documented, check documentation.
Coding tip
Code H50.06 only when both alternating esotropia and A pattern are clearly documented in the same encounter note.