Prim blst inj brn, NEC LOC >24 hr w/o ret consc w surv, sqla

This code describes a severe traumatic brain injury resulting from a primary blast event, where the patient experienced a loss of consciousness exceeding 24 hours and did not regain their baseline neurological status. It signifies a long-term consequence of the blast injury, indicating persistent neurological deficits.

Apply this code for patients who have survived a primary blast-related brain injury, presented with prolonged unconsciousness (over 24 hours), and whose medical record clearly documents a failure to return to their pre-injury conscious level. This code is appropriate for reporting the sequelae of such an event.

• Ensure documentation explicitly states "primary blast injury" and "loss of consciousness greater than 24 hours" with no return to pre-existing conscious level.
• Distinguish from other traumatic brain injuries not caused by blast, and from blast injuries without prolonged loss of consciousness or with full recovery.
• This is a sequela code, indicating a residual condition; it should be used for encounters addressing the long-term effects, not the initial acute injury.