Unsp intcrn injury w LOC >24 hr w ret consc lev, sequela

This code signifies a past, unspecified head injury that resulted in a prolonged coma (over 24 hours) from which the patient fully recovered to their baseline mental status. It indicates that the patient is now experiencing a long-term consequence or complication directly attributable to that previous severe head trauma.

Apply this code when documentation clearly states a history of an intracranial injury with a loss of consciousness exceeding 24 hours, followed by a complete return to the patient's pre-injury conscious level. This code is used for the sequela (late effects) of such an injury, not the acute event itself.

• Always sequence this code after the primary diagnosis for the specific sequela being treated (e.g., cognitive deficits, post-traumatic epilepsy).
• Ensure documentation explicitly states "sequela" or "late effect" of the prior injury and confirms the duration of unconsciousness and recovery to baseline.
• Do not use for acute injuries or if the patient did not return to their pre-existing conscious level.