Injury of oculomotor nerve, right side, sequela

This code signifies a long-term complication or residual effect stemming from a past injury to the right oculomotor nerve (cranial nerve III). This nerve is crucial for controlling most eye movements, pupil constriction, and eyelid elevation. Sequelae can manifest as persistent diplopia, ptosis, or ophthalmoplegia affecting the right eye.

Apply this code when documenting a current condition that is a direct consequence of a previous injury to the right oculomotor nerve, and the acute phase of the original injury has passed. Documentation should clearly link the current neurological deficit to a past traumatic event affecting the right third cranial nerve.

• Requires a seventh character "S" to indicate sequela, meaning the current condition is a late effect of a previous injury.
• Always sequence this code after the code(s) describing the specific sequela (e.g., H49.01 for third nerve paralysis, right eye).
• Do not use for acute injuries; refer to codes without the "S" seventh character for initial encounters.