ICD-10 Code H50.21 – Vertical strabismus, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.21 – Vertical strabismus, right eye
What it is
Vertical strabismus, right eye means the right eye is misaligned vertically compared with the other eye. The eye may drift upward or downward, depending on the documented pattern.
Clinical signs
Common findings include vertical ocular misalignment, diplopia, head tilt, or compensatory posture. Clinical features vary; refer to documentation.
When to use this code
Use H50.21 when the provider documents vertical strabismus affecting the right eye. Apply it when the record specifies right-sided vertical deviation, even if the exact cause is not stated.
If the note describes only strabismus without laterality or vertical direction, check documentation before coding.
Do not use for
Do not use this code for horizontal strabismus, unspecified strabismus, or left-eye vertical misalignment. Check documentation if the chart does not clearly identify the right eye.
Coding tip
Assign the code only when both vertical type and right-eye laterality are documented.