Contus/lac/hem brnst w LOC >24 hr w/o ret consc w surv, init

This code signifies a severe traumatic brain injury affecting the brainstem, characterized by bruising, tearing, and bleeding within this critical area. The patient experiences a prolonged coma exceeding 24 hours, with no recovery to their baseline neurological status, yet survives the initial injury.

Apply this code for patients presenting with documented brainstem contusion, laceration, or hemorrhage following trauma, who remain in a persistent vegetative state or have severe neurological deficits after more than 24 hours of unconsciousness. Documentation must clearly state the mechanism of injury, the specific brainstem involvement, the duration of unconsciousness, and the patient's post-injury neurological status.

• Ensure documentation explicitly states "loss of consciousness greater than 24 hours" and "without return to pre-existing conscious level."
• Verify the encounter is indeed the "initial encounter" for this specific injury.
• Distinguish from brainstem injuries with shorter periods of unconsciousness or full recovery, which would require different codes.