ICD-10-CM > S00-T88 > S20-S29 > S21 > S21.3 > S21.31 > S21.319 S21.319 Laceration without foreign body of unspecified front wall of thorax with penetration into thoracic cavity Non-Billable/Non-Specific Codes S21.319A..., initial encounterS21.319D..., subsequent encounterS21.319S..., sequela