ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.0 > S06.0X > S06.0XA S06.0XA Concussion with loss of consciousness status unknown Non-Billable/Non-Specific Applicable To Concussion NOS Codes S06.0XAA..., initial encounterS06.0XAD..., subsequent encounterS06.0XAS..., sequela