ICD-10 Diagnosis Code S21.452A

Open bite of l bk wl of thorax w penet thoracic cavity, init

Diagnosis Code S21.452A

ICD-10: S21.452A
Short Description: Open bite of l bk wl of thorax w penet thoracic cavity, init
Long Description: Open bite of left back wall of thorax with penetration into thoracic cavity, initial encounter
This is the 2018 version of the ICD-10-CM diagnosis code S21.452A

Valid for Submission
The code S21.452A is valid for submission for HIPAA-covered transactions.

Code Classification
  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Injuries to the thorax (S20-S29)
      • Open wound of thorax (S21)

Information for Patients


Animal Bites

Also called: Cat bites, Dog bites

Wild animals usually avoid people. They might attack, however, if they feel threatened, are sick, or are protecting their young or territory. Attacks by pets are more common. Animal bites rarely are life-threatening, but if they become infected, you can develop serious medical problems.

To prevent animal bites and complications from bites

  • Never pet, handle, or feed unknown animals
  • Leave snakes alone
  • Watch your children closely around animals
  • Vaccinate your cats, ferrets, and dogs against rabies
  • Spay or neuter your dog to make it less aggressive
  • Get a tetanus booster if you have not had one recently
  • Wear boots and long pants when you are in areas with venomous snakes

If an animal bites you, clean the wound with soap and water as soon as possible. Get medical attention if necessary.

Centers for Disease Control and Prevention

  • Animal bites - self-care (Medical Encyclopedia)
  • Jellyfish stings (Medical Encyclopedia)
  • Marine animal stings or bites (Medical Encyclopedia)
  • Snake bites (Medical Encyclopedia)


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