S21.209

Hierarchy

Where S21.209 sits in the official hierarchy. Each level is the code it is classified under.

1. S21 Open wound of thorax
2. S21.2 Open wound of back wall of thorax without penetration into thoracic cavity
3. S21.20 Parent Unspecified open wound of back wall of thorax without penetration into thoracic cavity
4. S21.209 This code Unspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

• S21.209A Unspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity, initial encounter Billable
• S21.209D Unspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity, subsequent encounter Billable
• S21.209S Unspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity, sequela Billable

Version History

How S21.209 appears in each release imported from the official files, newest first.

1. FY 2027 Effective October 1, 2026

   Current

   Unspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity

2. FY 2026 Effective October 1, 2025

   Unchanged

   Unspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity