ICD-10-CM > S00-T88 > S00-S09 > S06 > S06.0 > S06.0X S06.0X Concussion Non-Billable/Non-Specific Codes S06.0X0Concussion without loss of consciousnessS06.0X0A..., initial encounterS06.0X0D..., subsequent encounterS06.0X0S..., sequelaS06.0X1Concussion with loss of consciousness of 30 minutes or lessS06.0X1A..., initial encounterS06.0X1D..., subsequent encounterS06.0X1S..., sequelaS06.0XAConcussion with loss of consciousness status unknownS06.0XAA..., initial encounterS06.0XAD..., subsequent encounterS06.0XAS..., sequelaS06.0X9Concussion with loss of consciousness of unspecified durationS06.0X9A..., initial encounterS06.0X9D..., subsequent encounterS06.0X9S..., sequela