ICD-10 CM Code S21.459
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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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S21.45 Open bite of back wall of thorax with penetration into thoracic cavity
S21.459
Open bite of unspecified back wall of thorax with penetration into thoracic cavity
Inclusion Term
- Bite of back wall of thorax NOS
Excludes Type 1
- superficial bite of back wall of thorax (S20.47)
- 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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