Suppression of binocular vision

This code signifies the active inhibition of visual input from one eye by the brain, leading to a loss of binocular single vision. It is a neurological adaptation to avoid diplopia, often occurring in conditions like strabismus or significant anisometropia. The brain essentially "turns off" the image from the deviating or blurry eye.

Use this code when documentation explicitly states suppression of binocular vision, particularly in patients with strabismus, amblyopia, or large refractive errors where the brain actively ignores input from one eye. This diagnosis is typically made during an ophthalmic examination involving tests for binocular function.

• Differentiate from amblyopia (H53.0x), which is reduced visual acuity not correctable by refractive means, though suppression can contribute to amblyopia.
• Often co-occurs with codes for strabismus (H49.xx, H50.xx) or anisometropia (H52.1x); sequence suppression as a secondary diagnosis if the primary condition is the underlying cause.
• Ensure documentation specifies "suppression" rather than just "loss of binocular vision" to accurately reflect the active neurological process.