Total (external) ophthalmoplegia, bilateral

This code signifies a complete paralysis of the extraocular muscles affecting both eyes, resulting in an inability to move either eye in any direction. This condition is typically caused by severe neurological dysfunction impacting the cranial nerves responsible for eye movement.

Assign this code when documentation clearly indicates a total and bilateral external ophthalmoplegia. This diagnosis is supported by findings of absent eye movements in all directions for both eyes, often noted during neurological examination.

• Ensure documentation specifies "total" or "complete" ophthalmoplegia and that it affects "both eyes" or is "bilateral."
• Distinguish from partial ophthalmoplegia or ophthalmoplegia affecting only one eye, which would require different codes.
• Code any underlying cause of the ophthalmoplegia, such as a specific neurological disorder, as a primary diagnosis if known.