2025
ICD-10-CM
Diagnosis
Code

S21 Open wound of thorax

  • Non-billable
  • 2016–2025

S21 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Open wound of thorax.

Code also

  • Any associated injury, such as:

Type 1 excludes

  • Traumatic amputation (partial) of thorax (S28.1)

Seventh character note

  • The appropriate 7th character is to be added to each code from category S21

Seventh character extensions

  • A: initial encounter

  • D: subsequent encounter

  • S: sequela

Codes

Versions

  1. 2025

    No changes

  2. 2024

    No changes

  3. 2023

    No changes

  4. 2022

    No changes

  5. 2021

    No changes

  6. 2020

    No changes

  7. 2019

    No changes

  8. 2018

    No changes

  9. 2017

    No changes

  10. 2016

    New code