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v1.0.0
ICD-10 Guide
DiagnosesLatent Tuberculosis Infection

Latent Tuberculosis Infection

ICD-10 Coding for Latent Tuberculosis Infection(Z22.7, Z11.7, Z86.15)

PRIMARY SPECIALTYPrimary Care
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Latent Tuberculosis Infection?
Essential facts and insights about Latent Tuberculosis Infection

Key Clinical Considerations:

  • Asymptomatic; no clinical signs of active TB
  • Positive tuberculin skin test (TST) or interferon-gamma release assay (IGRA)
  • Normal chest X-ray findings

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of exposure to TB
  • Results of TST or IGRA
  • Chest X-ray report indicating no active disease

Coding Guidelines

Usage Guidelines & Examples

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

Code Exclusions

Important Exclusions

  • Active tuberculosis disease (A15-A19)
  • Conditions that mimic TB infection

Related ICD-10 Codes

Primary Codes
Z11.1
Encounter for screening for tuberculosis
Z22.7
Carrier of tuberculosis
Ancillary Codes
Z11.7
Differential Codes
R76.11
R76.12
Z11.1

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Primary Care

Specialty Applications

  • Individuals with known exposure to TB
  • Primary care settings, public health clinics

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 patient history, test results, and any risk factors.

What are the billing considerations?

Ensure correct ICD codes are used and document medical necessity.