ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.3 > S06.30 > S06.305 S06.305 Unspecified focal traumatic brain injury with loss of consciousness greater than 24 hours with return to pre-existing conscious level Non-Billable/Non-Specific Codes S06.305A..., initial encounterS06.305D..., subsequent encounterS06.305S..., sequela