S21.4
Header — not billableOpen wound of back wall of thorax with penetration into thoracic cavity
The ICD-10 code for open wound of back wall of thorax with penetration into thoracic cavity is S21.4.
S21.4 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 6 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under S21.4
- S21.40Unspecified open wound of back wall of thorax with penetration into thoracic cavitynon-billable header
- S21.41Laceration without foreign body of back wall of thorax with penetration into thoracic cavitynon-billable header
- S21.42Laceration with foreign body of back wall of thorax with penetration into thoracic cavitynon-billable header
- S21.43Puncture wound without foreign body of back wall of thorax with penetration into thoracic cavitynon-billable header
- S21.44Puncture wound with foreign body of back wall of thorax with penetration into thoracic cavitynon-billable header
- S21.45Open bite of back wall of thorax with penetration into thoracic cavitynon-billable header
Related codes in this category
- S21.0Open wound of breastnon-billable header
- S21.1Open wound of front wall of thorax without penetration into thoracic cavitynon-billable header
- S21.2Open wound of back wall of thorax without penetration into thoracic cavitynon-billable header
- S21.3Open wound of front wall of thorax with penetration into thoracic cavitynon-billable header
- S21.9Open wound of unspecified part of thoraxnon-billable header
- S21.4Open wound of back wall of thorax with penetration into thoracic cavitynon-billable header