S21 — Open wound of thorax
Part of Chapter 19: Injury, poisoning and certain other consequences of external causes , block Injuries to the thorax (S20-S29) .
Official Notes
Code Also
any associated injury, such as:
Code Also
injury of heart ( S26 .-)
Code Also
injury of intrathoracic organs ( S27 .-)
Code Also
traumatic hemopneumothorax ( S27.3 )
Code Also
traumatic hemothorax ( S27.1 )
Code Also
traumatic pneumothorax ( S27.0 )
Code Also
wound infection
Excludes1
traumatic amputation (partial) of thorax ( S28.1 )
7th Character
The appropriate 7th character is to be added to each code from category S21
7th Character
A - initial encounter
7th Character
D - subsequent encounter
7th Character
S - sequela
Child Codes
- S21.0 Open wound of breast Has subcodes
- S21.1 Open wound of front wall of thorax without penetration into thoracic cavity Has subcodes
- S21.2 Open wound of back wall of thorax without penetration into thoracic cavity Has subcodes
- S21.3 Open wound of front wall of thorax with penetration into thoracic cavity Has subcodes
- S21.4 Open wound of back wall of thorax with penetration into thoracic cavity Has subcodes
- S21.9 Open wound of unspecified part of thorax Has subcodes
Referenced By
Official notes on these codes cite S21.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS