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v1.0.0
ICD-10 Guide
ICD-10 CodesA23

A23

Brucellosis

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

Code Description

ICD-10 A23 is a billable code used to indicate a diagnosis of brucellosis.

Key Diagnostic Point:

Brucellosis is a zoonotic infection caused by bacteria of the genus Brucella, which primarily affects livestock and can be transmitted to humans through direct contact with infected animals or consumption of contaminated animal products, such as unpasteurized milk and cheese. The disease is characterized by a range of symptoms, including fever, sweats, malaise, anorexia, headache, and muscle pain. In severe cases, brucellosis can lead to complications such as osteoarticular infections, endocarditis, and neurological disorders. The incubation period for brucellosis can vary from a few days to several months, making diagnosis challenging. Public health measures focus on controlling the disease in animal populations, promoting food safety, and educating at-risk populations, such as farmers and veterinarians, about preventive measures. Vaccination of livestock and pasteurization of dairy products are key strategies in reducing the incidence of brucellosis in both animals and humans.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Varied clinical presentation can lead to misdiagnosis.
  • Differential diagnosis includes multiple infectious diseases.
  • Requires knowledge of zoonotic transmission routes.
  • Documentation must specify exposure history and symptomatology.

Audit Risk Factors

  • Inadequate documentation of exposure history.
  • Failure to specify the type of Brucella infection.
  • Misclassification of symptoms as unrelated conditions.
  • Lack of follow-up documentation for chronic cases.

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed patient history, including exposure to animals, travel history, and symptom onset.

Common Clinical Scenarios

Patients presenting with fever of unknown origin, history of animal exposure, or chronic fatigue.

Billing Considerations

Ensure all relevant laboratory results and diagnostic imaging are documented.

Public Health

Documentation Requirements

Data on outbreaks, vaccination status of livestock, and community health education efforts.

Common Clinical Scenarios

Epidemiological studies of brucellosis cases in specific populations.

Billing Considerations

Focus on preventive measures and community health interventions.

Coding Guidelines

Inclusion Criteria

Use A23 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of symptoms, exposure history, and any complications
  • Include relevant laboratory findings to support the diagnosis

Exclusion Criteria

Do NOT use A23 When
No specific exclusions found.

Related Codes

Child Codes

6 codes
A23.0
Brucellosis due to Brucella melitensis
A23.1
Brucellosis due to Brucella melitensis
A23.2
Brucellosis due to Brucella melitensis
A23.3
Brucellosis due to Brucella melitensis
A23.8
Other tuberculosis of meninges
A23.9
Brucellosis, unspecified

Related CPT Codes

87070CPT Code

Culture, bacterial, any source, aerobic.

Clinical Scenario

Used to confirm diagnosis of brucellosis.

Documentation Requirements

Document the source of the culture and clinical symptoms.

Specialty Considerations

Infectious disease specialists should ensure comprehensive lab results are included.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of brucellosis, enabling better tracking of the disease and its complications. This specificity aids in public health reporting and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of brucellosis, enabling better tracking of the disease and its complications. This specificity aids in public health reporting and resource allocation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of brucellosis, enabling better tracking of the disease and its complications. This specificity aids in public health reporting and resource allocation.

Resources

Clinical References

  • •
    Centers for Disease Control and Prevention (CDC) - Brucellosis

Coding & Billing References

  • •
    Centers for Disease Control and Prevention (CDC) - Brucellosis

Frequently Asked Questions

What are the common symptoms of brucellosis?

Common symptoms include fever, sweats, malaise, anorexia, headache, and muscle pain. Symptoms can vary widely among individuals.

How is brucellosis transmitted?

Brucellosis is primarily transmitted through direct contact with infected animals or consumption of contaminated animal products, particularly unpasteurized dairy.

What is the treatment for brucellosis?

Treatment typically involves a combination of antibiotics, such as doxycycline and rifampin, for an extended period to prevent relapse.