Total (external) ophthalmoplegia, left eye

This code signifies a complete paralysis of all extraocular muscles affecting the left eye, resulting in an inability to move the eye in any direction. This condition typically arises from significant damage to the oculomotor, trochlear, and abducens nerves or their nuclei.

Apply this code when documentation explicitly states "total ophthalmoplegia" or "complete external ophthalmoplegia" of the left eye. This diagnosis is supported by findings of a fixed left globe with no voluntary or reflexive eye movements.

• Differentiate from partial ophthalmoplegia or isolated cranial nerve palsies affecting the left eye.
• Always specify laterality; this code is for the left eye only.
• Investigate and code any underlying cause of the total ophthalmoplegia, such as trauma, tumor, or vascular event, as a primary diagnosis if applicable.