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ICD-10 Guide
ICD-10 CodesA68.9

A68.9

Relapsing fever, unspecified

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

Code Description

ICD-10 A68.9 is a billable code used to indicate a diagnosis of relapsing fever, unspecified.

Key Diagnostic Point:

Relapsing fever is a bacterial infection characterized by recurring episodes of fever, often caused by spirochetes of the Borrelia genus. The disease is transmitted primarily through the bites of infected lice or ticks, with Borrelia hermsii and Borrelia recurrentis being the most common pathogens. Clinically, patients present with sudden onset of high fever, chills, headache, and myalgia, which may resolve after a few days only to recur after a period of afebrile intervals. The condition is endemic in certain geographic regions, particularly in sub-Saharan Africa, parts of South America, and some areas of Asia. Diagnosis is typically confirmed through serological tests or microscopic examination of blood smears. Treatment involves the use of antibiotics, with doxycycline being the first-line therapy. The unspecified nature of this code indicates that the specific type of relapsing fever is not documented, which may complicate treatment and epidemiological tracking.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of causative agents (different Borrelia species)
  • Geographic variations in disease prevalence
  • Potential for misdiagnosis with other febrile illnesses
  • Need for specific laboratory confirmation

Audit Risk Factors

  • Inadequate documentation of travel history
  • Failure to specify the type of relapsing fever
  • Lack of laboratory confirmation in medical records
  • Misalignment between clinical findings and coded diagnosis

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed patient history, including travel and exposure risks, laboratory results confirming diagnosis.

Common Clinical Scenarios

Patients presenting with recurrent fevers, particularly after travel to endemic areas.

Billing Considerations

Consideration of differential diagnoses and the need for specific laboratory tests.

Primary Care

Documentation Requirements

Comprehensive patient history and symptom documentation, including fever patterns.

Common Clinical Scenarios

Initial evaluation of febrile patients with potential exposure to endemic areas.

Billing Considerations

Referral to specialists for confirmation and treatment may be necessary.

Coding Guidelines

Inclusion Criteria

Use A68.9 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of symptoms, laboratory findings, and patient history

Exclusion Criteria

Do NOT use A68.9 When
  • Exclude other febrile illnesses before assigning A68

Related CPT Codes

87070CPT Code

Culture, bacterial, any source

Clinical Scenario

Used when a culture is taken to confirm the presence of Borrelia.

Documentation Requirements

Document the source of the culture and clinical indications.

Specialty Considerations

Infectious disease specialists may require additional tests.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of relapsing fever, improving the ability to track and manage cases effectively. A68.9 serves as a catch-all for unspecified cases, which may lead to challenges in treatment and epidemiological tracking.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of relapsing fever, improving the ability to track and manage cases effectively. A68.9 serves as a catch-all for unspecified cases, which may lead to challenges in treatment and epidemiological tracking.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of relapsing fever, improving the ability to track and manage cases effectively. A68.9 serves as a catch-all for unspecified cases, which may lead to challenges in treatment and epidemiological tracking.

Resources

Clinical References

  • •
    CDC - Relapsing Fever

Coding & Billing References

  • •
    CDC - Relapsing Fever

Frequently Asked Questions

What are the common symptoms of relapsing fever?

Common symptoms include recurrent episodes of high fever, chills, headache, muscle aches, and fatigue. Symptoms typically resolve and recur in cycles.