ICD-10-CM > S00-T88 > S20-S29 > S21 > S21.1 > S21.12 > S21.121 S21.121 Laceration with foreign body of right front wall of thorax without penetration into thoracic cavity Non-Billable/Non-Specific Codes S21.121A..., initial encounterS21.121D..., subsequent encounterS21.121S..., sequela