ICD-10-CM > S00-T88 > S20-S29 > S21 > S21.3 S21.3 Open wound of front wall of thorax with penetration into thoracic cavity Non-Billable/Non-Specific Applicable To Open wound of chest with penetration into thoracic cavity Codes S21.30Unspecified open wound of front wall of thorax with penetration into thoracic cavityS21.301Unspecified open wound of right front wall of thorax with penetration into thoracic cavityS21.301A..., initial encounterS21.301D..., subsequent encounterS21.301S..., sequelaS21.302Unspecified open wound of left front wall of thorax with penetration into thoracic cavityS21.302A..., initial encounterS21.302D..., subsequent encounterS21.302S..., sequelaS21.309Unspecified open wound of unspecified front wall of thorax with penetration into thoracic cavityS21.309A..., initial encounterS21.309D..., subsequent encounterS21.309S..., sequelaS21.31Laceration without foreign body of front wall of thorax with penetration into thoracic cavityS21.311Laceration without foreign body of right front wall of thorax with penetration into thoracic cavityS21.311A..., initial encounterS21.311D..., subsequent encounterS21.311S..., sequelaS21.312Laceration without foreign body of left front wall of thorax with penetration into thoracic cavityS21.312A..., initial encounterS21.312D..., subsequent encounterS21.312S..., sequelaS21.319Laceration without foreign body of unspecified front wall of thorax with penetration into thoracic cavityS21.319A..., initial encounterS21.319D..., subsequent encounterS21.319S..., sequelaS21.32Laceration with foreign body of front wall of thorax with penetration into thoracic cavityS21.321Laceration with foreign body of right front wall of thorax with penetration into thoracic cavityS21.321A..., initial encounterS21.321D..., subsequent encounterS21.321S..., sequelaS21.322Laceration with foreign body of left front wall of thorax with penetration into thoracic cavityS21.322A..., initial encounterS21.322D..., subsequent encounterS21.322S..., sequelaS21.329Laceration with foreign body of unspecified front wall of thorax with penetration into thoracic cavityS21.329A..., initial encounterS21.329D..., subsequent encounterS21.329S..., sequelaS21.33Puncture wound without foreign body of front wall of thorax with penetration into thoracic cavityS21.331Puncture wound without foreign body of right front wall of thorax with penetration into thoracic cavityS21.331A..., initial encounterS21.331D..., subsequent encounterS21.331S..., sequelaS21.332Puncture wound without foreign body of left front wall of thorax with penetration into thoracic cavityS21.332A..., initial encounterS21.332D..., subsequent encounterS21.332S..., sequelaS21.339Puncture wound without foreign body of unspecified front wall of thorax with penetration into thoracic cavityS21.339A..., initial encounterS21.339D..., subsequent encounterS21.339S..., sequelaS21.34Puncture wound with foreign body of front wall of thorax with penetration into thoracic cavityS21.341Puncture 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..., sequelaS21.35Open bite of front wall of thorax with penetration into thoracic cavityS21.351Open bite of right front wall of thorax with penetration into thoracic cavityS21.351A..., initial encounterS21.351D..., subsequent encounterS21.351S..., sequelaS21.352Open bite of left front wall of thorax with penetration into thoracic cavityS21.352A..., initial encounterS21.352D..., subsequent encounterS21.352S..., sequelaS21.359Open bite of unspecified front wall of thorax with penetration into thoracic cavityS21.359A..., initial encounterS21.359D..., subsequent encounterS21.359S..., sequela