Monocular esotropia, left eye

This code signifies an inward turning of the left eye, where only one eye is affected. This misalignment of the visual axes results in the left eye deviating nasally. It is a form of strabismus characterized by the left eye turning inward while the right eye maintains proper alignment.

Apply this code when documentation clearly indicates an esotropia affecting only the left eye. This diagnosis is typically made during an ophthalmological examination, often noted in the "Assessment and Plan" section of the medical record. Supporting documentation should specify "monocular" or "unilateral" and explicitly state the left eye is involved.

• Ensure the documentation specifies "monocular" or "unilateral" and clearly identifies the left eye; otherwise, consider bilateral or unspecified codes.
• Differentiate from intermittent esotropia (H50.03-) or other forms of strabismus like exotropia (H50.1-).
• Always review for laterality (left, right, bilateral, or unspecified) as this is a common source of coding errors in ophthalmology.