ICD-10-CM > S00-T88 > S20-S29 > S21 > S21.3 > S21.34 S21.34 Puncture wound with foreign body of front wall of thorax with penetration into thoracic cavity Non-Billable/Non-Specific Codes S21.341Puncture wound with foreign body of right front wall of thorax with penetration into thoracic cavityS21.341A..., initial encounterS21.341D..., subsequent encounterS21.341S..., sequelaS21.342Puncture wound with foreign body of left front wall of thorax with penetration into thoracic cavityS21.342A..., initial encounterS21.342D..., subsequent encounterS21.342S..., sequelaS21.349Puncture wound with foreign body of unspecified front wall of thorax with penetration into thoracic cavityS21.349A..., initial encounterS21.349D..., subsequent encounterS21.349S..., sequela