S21.30 - Unspecified open wound of front wall of thorax with penetration into thoracic cavity S21.3 - Open wound of front wall of thorax with penetration into thoracic cavity S21.30 - Unspecified open wound of front wall of thorax with penetration into thoracic cavity S21.301 - Unspecified open wound of right front wall of thorax with penetration into thoracic cavity S21.302 - Unspecified open wound of left front wall of thorax with penetration into thoracic cavity S21.309 - Unspecified open wound of unspecified front wall of thorax with penetration into thoracic cavity