Monocular esotropia with A pattern, left eye

This code describes a type of strabismus where the left eye turns inward (esotropia) and the deviation significantly increases on upward gaze and decreases on downward gaze, forming an "A" pattern. This ocular misalignment is present in only one eye.

This code is appropriate for documenting a patient diagnosed with left monocular esotropia exhibiting an A pattern. Documentation should clearly specify the affected eye, the direction of deviation (inward), and the presence of an A pattern, typically confirmed by prism and cover testing in different gaze positions.

• Ensure documentation specifies "monocular" and the laterality (left eye) to differentiate from binocular or unspecified esotropia.
• Verify the presence of an "A pattern" as opposed to a "V pattern" or no pattern, as these have distinct codes.
• Do not confuse with H50.00 (unspecified esotropia) or codes for exotropia.