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ICD-10 Coding for Mycobacterium Avium Complex Infection(A31.2, A31.0)

Complete ICD-10-CM coding and documentation guide for Mycobacterium Avium Complex Infection. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

MAC InfectionDisseminated MACPulmonary MAC

Related ICD-10 Code Ranges

Complete code families applicable to Mycobacterium Avium Complex Infection

A31Primary Range

Infections due to other mycobacteria

This range includes all infections caused by mycobacteria other than tuberculosis, including MAC.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
A31.2Disseminated mycobacterium avium-intracellulare complex (DMAC)Use for disseminated MAC infections, especially in immunocompromised patients such as those with HIV.
  • Documented bacteremia
  • Bone marrow involvement
  • Multi-organ infection in immunocompromised patients
A31.0Pulmonary mycobacterium avium-intracellulare complexUse for pulmonary MAC infections with specific radiographic and culture findings.
  • Chronic cough
  • Bronchiectasis/nodules on CT
  • Positive sputum cultures

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 Mycobacterium Avium Complex infection

Essential facts and insights about Mycobacterium Avium Complex Infection

The ICD-10 code for disseminated Mycobacterium Avium Complex infection is A31.2, while pulmonary cases are coded as A31.0.

Primary ICD-10-CM Codes for mycobacterium avium complex infection

Disseminated mycobacterium avium-intracellulare complex (DMAC)
Billable Code

Decision Criteria

clinical Criteria

  • Presence of bacteremia or multi-organ involvement

Applicable To

  • Disseminated MAC
  • MAC bacteremia

Excludes

  • Localized MAC infections

Clinical Validation Requirements

  • Documented bacteremia
  • Bone marrow involvement
  • Multi-organ infection in immunocompromised patients

Code-Specific Risks

  • Coding without evidence of dissemination

Coding Notes

  • Ensure documentation specifies dissemination and organism identification.

Ancillary Codes

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

HIV disease

B20
Sequence first if MAC is HIV-related.

Fever

R50.81
Use if fever is present.

Differential Codes

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

Pulmonary mycobacterium avium-intracellulare complex

A31.0
Use when infection is localized to the lungs with specific radiographic findings.

Tuberculosis of lung

A15.0
Use if AFB smear positive but MAC culture negative.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Mycobacterium Avium Complex Infection to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code A31.2.

Impact

Clinical: May lead to inappropriate treatment., Regulatory: Non-compliance with documentation standards., Financial: Potential claim denials.

Mitigation Strategy

Ensure detailed documentation of infection extent.

Impact

Reimbursement: Incorrect coding can lead to denied claims., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate healthcare data.

Mitigation Strategy

Query for confirmation: 'Is the MAC infection localized or disseminated?'

Impact

Incorrect sequencing of HIV and MAC codes.

Mitigation Strategy

Educate coders on proper sequencing rules.

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 Mycobacterium Avium Complex Infection, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Mycobacterium Avium Complex Infection

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

Pulmonary MAC Progress Note

Specialty: Pulmonology

Required Elements

  • Assessment
  • Plan
  • Radiographic findings
  • Culture results

Example Documentation

Assessment: Mycobacterium avium complex pulmonary disease confirmed by 3 positive sputum cultures.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has MAC.
Good Documentation Example
Disseminated MAC confirmed by blood culture with M. avium.
Explanation
The good example provides specific culture confirmation and organism identification.

Need help with ICD-10 coding for Mycobacterium Avium Complex Infection? Ask your questions below.

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