ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.8 > S06.8A > S06.8A3 S06.8A3 Primary blast injury of brain, not elsewhere classified with loss of consciousness of 1 hour to 5 hours 59 minutes Non-Billable/Non-Specific Codes S06.8A3A..., initial encounterS06.8A3D..., subsequent encounterS06.8A3S..., sequela