Diagnosis Overview

What is Positive Quantiferon?

Essential facts and insights about Positive Quantiferon Test

Key Clinical Considerations:

Asymptomatic or symptomatic latent tuberculosis infection (LTBI)
Positive Quantiferon test result
History of exposure to tuberculosis

Clinical Information

Clinical Criteria & Documentation Requirements

Patient history of TB exposure or symptoms
Results of Quantiferon test
Assessment of risk factors for TB

Coding Guidelines

Usage Guidelines & Examples

Follow guidelines for coding LTBI versus active TB.
Common errors include misclassifying LTBI as active TB.

Code Exclusions

Important Exclusions

Active tuberculosis disease
Other respiratory infections

Related ICD-10 Codes

Primary Codes

Z11.1

Encounter for screening for tuberculosis

Z22.7

Carrier of tuberculosis

A15.0

Respiratory tuberculosis, bacteriologically and histologically confirmed

Ancillary Codes

Z11.1

Z11.7

Differential Codes

R76.11

for positive tuberculin skin tests, not for Quantiferon tests.

A15.9

only if active TB is confirmed by clinical and microbiological evidence.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Infectious Disease

Specialty Applications

Individuals with known TB exposure
Patients in high-risk settings such as healthcare facilities

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

Comprehensive clinical documentation
Accurate code selection based on clinical criteria
Proper exclusion considerations
Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

Ensure proper documentation for billing
Verify code specificity requirements
Check for any additional codes needed
Review payer-specific guidelines

Common Issues

Insufficient clinical documentation
Incorrect code selection
Missing supporting diagnoses
Timing and frequency documentation

Frequently Asked Questions

What are the documentation requirements?

Document the positive test result, patient history, and any symptoms.

What are the billing considerations?

Ensure correct ICD codes are used for accurate reimbursement.