Simultaneous visual perception without fusion

This code describes a binocular vision disorder where the brain perceives two separate images, one from each eye, but is unable to combine them into a single, fused image. This results in diplopia (double vision) or visual confusion, despite both eyes being open and receiving visual input. It indicates a failure of the brain's fusional mechanisms.

Use this code when documentation clearly indicates that the patient experiences simultaneous perception of two distinct images without the ability to fuse them into one. This often occurs in conditions like strabismus, amblyopia, or other disorders affecting binocular vision. Documentation should specify the lack of fusion, not just general double vision.

• Differentiate from other forms of diplopia; this code specifically indicates a lack of fusion.
• Ensure documentation specifies "simultaneous perception without fusion" or similar language.
• Consider co-reporting with codes for underlying conditions causing the fusional deficit, such as strabismus (H50.xx).