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ICD-10 Guide
ICD-10 CodesA22.8

A22.8

Anthrax with other specified site

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 A22.8 is a billable code used to indicate a diagnosis of anthrax with other specified site.

Key Diagnostic Point:

Anthrax is a serious infectious disease caused by the bacterium Bacillus anthracis, which can affect both humans and animals. It primarily occurs in three forms: cutaneous, inhalational, and gastrointestinal, but can also manifest in other specified sites. The disease is zoonotic, meaning it can be transmitted from animals to humans, often through contact with infected animals or contaminated animal products. Transmission vectors include direct contact with infected livestock, inhalation of spores from contaminated environments, or ingestion of contaminated food. Public health considerations are paramount, as anthrax can be weaponized and poses a significant threat in bioterrorism scenarios. Vaccination of at-risk populations, such as veterinarians and livestock handlers, is crucial for prevention. Early diagnosis and treatment are essential to reduce morbidity and mortality associated with the disease. The clinical presentation may vary depending on the site of infection, necessitating thorough documentation to ensure accurate coding and appropriate management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of clinical presentations depending on the site of infection.
  • Need for precise documentation of the infection site.
  • Differentiation from other zoonotic infections.
  • Potential for bioterrorism implications requiring additional reporting.

Audit Risk Factors

  • Inadequate documentation of the infection site.
  • Misclassification of anthrax type.
  • Failure to report potential zoonotic transmission.
  • Inconsistent coding practices across specialties.

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed clinical notes on the site of infection, treatment protocols, and patient history.

Common Clinical Scenarios

Diagnosis of anthrax in patients with exposure history, presenting symptoms consistent with anthrax infection.

Billing Considerations

Consideration of potential bioterrorism implications and public health reporting.

Veterinary Medicine

Documentation Requirements

Records of animal exposure, vaccination status, and any zoonotic transmission cases.

Common Clinical Scenarios

Cases of anthrax in livestock and potential transmission to handlers.

Billing Considerations

Importance of reporting zoonotic cases to public health authorities.

Coding Guidelines

Inclusion Criteria

Use A22.8 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the infection site
  • Include any relevant clinical details that support the diagnosis and treatment plan

Exclusion Criteria

Do NOT use A22.8 When
  • Exclude codes for other forms of anthrax unless specified

Related CPT Codes

87470CPT Code

Infectious agent detection by nucleic acid (DNA or RNA); direct probe technique

Clinical Scenario

Used for confirming anthrax infection through laboratory testing.

Documentation Requirements

Laboratory results and clinical notes supporting the diagnosis.

Specialty Considerations

Infectious disease specialists should ensure accurate coding based on test results.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of anthrax cases, improving data accuracy and public health reporting. It emphasizes the need for detailed documentation of the infection site and clinical presentation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of anthrax cases, improving data accuracy and public health reporting. It emphasizes the need for detailed documentation of the infection site and clinical presentation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of anthrax cases, improving data accuracy and public health reporting. It emphasizes the need for detailed documentation of the infection site and clinical presentation.

Resources

Clinical References

  • •
    CDC Anthrax Information

Coding & Billing References

  • •
    CDC Anthrax Information

Frequently Asked Questions

What are the common symptoms of anthrax?

Common symptoms include fever, chills, fatigue, and depending on the type, may include respiratory distress or skin lesions.

How is anthrax transmitted?

Anthrax is primarily transmitted through contact with infected animals, inhalation of spores, or ingestion of contaminated food.

What are the treatment options for anthrax?

Treatment typically involves antibiotics such as ciprofloxacin or doxycycline, and in severe cases, antitoxins may be used.