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

Complete ICD-10-CM coding and documentation guide for Latent Tuberculosis Infection. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

LTBILatent TB

Related ICD-10 Code Ranges

Complete code families applicable to Latent Tuberculosis Infection

Z22-Z23Primary Range

Carrier of infectious disease

This range includes codes for carriers of infectious diseases, including latent tuberculosis infection.

Personal history of certain other diseases

This range includes codes for personal history of diseases, relevant for documenting history of LTBI.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
Z22.7Latent tuberculosisUse when LTBI is confirmed and is the focus of care.
  • Positive IGRA or TST
  • Normal chest X-ray
  • Absence of symptoms of active TB
Z11.7Encounter for testing for latent tuberculosisUse when the encounter is specifically for testing LTBI.
  • Order of IGRA or TST without prior suspicion of active TB
Z86.15Personal history of latent tuberculosis infectionUse for documenting history of LTBI after treatment completion.
  • Documentation of completed LTBI treatment
  • Current negative status

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for latent tuberculosis infection

Essential facts and insights about Latent Tuberculosis Infection

The ICD-10 code for latent tuberculosis infection is Z22.7, used when LTBI is confirmed with positive IGRA/TST and normal chest X-ray.

Primary ICD-10-CM Codes for latent tuberculosis infection

Latent tuberculosis
Billable Code

Decision Criteria

clinical Criteria

  • Positive IGRA or TST with normal CXR and no symptoms

coding Criteria

  • LTBI confirmed and documented

Applicable To

  • Confirmed latent tuberculosis infection

Excludes

Clinical Validation Requirements

  • Positive IGRA or TST
  • Normal chest X-ray
  • Absence of symptoms of active TB

Code-Specific Risks

  • Using without documented confirmation of LTBI

Coding Notes

  • Ensure documentation includes test results and absence of active TB symptoms.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Encounter for testing for latent tuberculosis

Z11.7
Use when the encounter is specifically for LTBI testing.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Nonspecific reaction to tuberculin skin test without active tuberculosis

R76.11
Use when TST is positive but IGRA is negative and no LTBI is confirmed.

Nonspecific reaction to gamma interferon test without active tuberculosis

R76.12
Use when IGRA is equivocal or negative without LTBI confirmation.

Encounter for screening for respiratory tuberculosis

Z11.1
Use for active TB screening, not LTBI.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Latent Tuberculosis Infection to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code Z22.7.

Impact

Clinical: Potential misdiagnosis of active TB., Regulatory: Non-compliance with coding standards., Financial: Claim denials due to insufficient documentation.

Mitigation Strategy

Ensure all diagnostic tests are documented, Review documentation before claim submission

Impact

Reimbursement: Incorrect sequencing can lead to claim denials., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate data representation of patient condition.

Mitigation Strategy

Use Z22.7 as primary when LTBI is confirmed, with Z11.7 as secondary if testing was part of the encounter.

Impact

Reimbursement: Potential for claim rejection due to incorrect code usage., Compliance: Violation of coding standards., Data Quality: Misrepresentation of patient treatment status.

Mitigation Strategy

Use Z86.15 only after LTBI treatment is completed.

Impact

Incomplete documentation of diagnostic criteria for LTBI.

Mitigation Strategy

Implement thorough documentation protocols for all LTBI cases.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Latent Tuberculosis Infection, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Latent Tuberculosis Infection

Use these documentation templates to ensure complete and accurate documentation for Latent Tuberculosis Infection. These templates include all required elements for proper coding and billing.

Primary Care Evaluation for LTBI

Specialty: Primary Care

Required Elements

  • Positive IGRA or TST result
  • Normal chest X-ray
  • Absence of TB symptoms
  • Treatment plan

Example Documentation

Assessment: Latent tuberculosis infection (ICD-10: Z22.7). Positive QuantiFERON-Gold (12/01/2024). Normal PA/lateral CXR (12/05/2024). No symptoms of active TB: Denies cough, hemoptysis, night sweats, weight loss. Plan: Initiate 3-month isoniazid/rifapentine regimen with weekly DOT. Monitor LFTs baseline and monthly.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Positive TB test.
Good Documentation Example
Positive T-SPOT.TB (IGRA) result; normal PA/lateral CXR; denies fever/weight loss.
Explanation
The good example provides specific test results and rules out active TB, supporting the LTBI diagnosis.

Need help with ICD-10 coding for Latent Tuberculosis Infection? Ask your questions below.

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