ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.3 > S06.30 > S06.306 S06.306 Unspecified focal traumatic brain injury with loss of consciousness greater than 24 hours without return to pre-existing conscious level with patient surviving Non-Billable/Non-Specific Codes S06.306A..., initial encounterS06.306D..., subsequent encounterS06.306S..., sequela