ICD-10-CM > S00-T88 > S20-S29 > S21 > S21.3 > S21.33 > S21.339 S21.339 Puncture wound without foreign body of unspecified front wall of thorax with penetration into thoracic cavity Non-Billable/Non-Specific Codes S21.339A..., initial encounterS21.339D..., subsequent encounterS21.339S..., sequela