Monocular exotropia with other noncomitancies, left eye

This code signifies an outward deviation of the left eye (exotropia) where the misalignment varies depending on the direction of gaze, indicating a noncomitant strabismus. This means the degree of ocular deviation is not constant in all gaze positions.

Apply this code when documentation specifies exotropia affecting only the left eye, and the ophthalmologist or optometrist notes that the deviation is noncomitant. This typically occurs in cases of paralytic strabismus or restrictive strabismus where muscle weakness or restriction is present.

• Ensure the documentation clearly specifies "monocular" and "left eye" for the exotropia.
• Distinguish "noncomitant" from "comitant" exotropia; comitant deviations are coded differently.
• Look for details regarding the variability of the deviation in different gaze positions to support "noncomitancies."