ICD-10-CM > S00-T88 > S20-S29 > S21 > S21.1 > S21.10 > S21.101 S21.101 Unspecified open wound of right front wall of thorax without penetration into thoracic cavity Non-Billable/Non-Specific Codes S21.101A..., initial encounterS21.101D..., subsequent encounterS21.101S..., sequela