Third [oculomotor] nerve palsy, right eye

This code signifies a paralysis or paresis of the third cranial nerve (oculomotor nerve) affecting the right eye. This condition typically results in impaired eye movement, including issues with adduction, elevation, and depression of the right eye, as well as potential ptosis and pupillary abnormalities.

Apply this code when documentation explicitly states a diagnosis of third nerve palsy affecting the right eye. This includes cases of acquired oculomotor nerve dysfunction, whether complete or partial, impacting the motor functions of the right eye. Supporting documentation should detail the affected eye and the specific cranial nerve involved.

• Differentiate from other cranial nerve palsies; ensure documentation specifies the third nerve and right eye.
• Investigate underlying causes (e.g., aneurysm, tumor, diabetes) and code them as secondary diagnoses if identified and documented.
• Do not use for congenital third nerve palsy; refer to codes in the Q12 category for congenital malformations.