ICD-10 CM Code S21.409
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S21 Open wound of thorax
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S21.4 Open wound of back wall of thorax with penetration into thoracic cavity
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S21.40 Unspecified open wound of back wall of thorax with penetration into thoracic cavity
S21.409
Unspecified open wound of unspecified back wall of thorax with penetration into thoracic cavity
Excludes Type 1
- traumatic amputation (partial) of thorax (S28.1)
7th Character
- The appropriate 7th character is to be added to each code from category S21
- A - initial encounter
- D - subsequent encounter
- S - sequela
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