ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.2 > S06.2X > S06.2X9 S06.2X9 Diffuse traumatic brain injury with loss of consciousness of unspecified duration Non-Billable/Non-Specific Codes S06.2X9A..., initial encounterS06.2X9D..., subsequent encounterS06.2X9S..., sequela