Alternating exotropia with other noncomitancies

This code describes a type of strabismus where one eye deviates outward (exotropia), and the deviation alternates between the eyes. It is further characterized by the presence of other noncomitant features, meaning the degree of deviation varies depending on the direction of gaze. This indicates a more complex muscle imbalance than simple alternating exotropia.

Use this code when documentation clearly indicates alternating exotropia alongside other noncomitant characteristics, such as incomitance in specific gaze positions. This diagnosis is typically made after a comprehensive ophthalmological examination, including motility testing and prism cover tests, demonstrating variable deviation angles.

• Ensure documentation specifies "alternating" and "noncomitant" to differentiate from other exotropia types.
• Do not confuse with H50.11 (Alternating exotropia) if noncomitancy is not explicitly documented.
• Sequence this code as a primary diagnosis when it is the main reason for the encounter, or as a secondary diagnosis if it is a co-existing condition impacting treatment.