Abnormal retinal correspondence

This code describes a condition where the fovea of one eye corresponds to an extrafoveal area of the other eye, leading to anomalous binocular vision. It is a sensory adaptation to strabismus, allowing the brain to fuse images despite ocular misalignment, often resulting in reduced stereopsis.

Assign this code when documentation explicitly states "abnormal retinal correspondence" or "anomalous retinal correspondence" as a diagnosis. This is typically identified during an orthoptic evaluation or comprehensive ophthalmological examination for strabismus or amblyopia.

• Do not confuse this with normal retinal correspondence, which is the expected sensory relationship.
• Always code the underlying strabismus (e.g., esotropia, exotropia) in conjunction with this code, as ARC is a sensory adaptation to ocular misalignment.
• Ensure the provider's documentation clearly distinguishes between normal and abnormal retinal correspondence based on diagnostic testing.