How is Mycobacterium Avium Complex infection coded in ICD-10?

Mycobacterium Avium Complex infection is primarily coded as A31.2 for disseminated cases and A31.0 for pulmonary cases. Proper documentation is essential for accurate coding.

What are the documentation requirements for MAC infection?

Documentation must include organism identification, dissemination status, and relevant clinical findings such as culture results and imaging.

ICD-10 Coding for Mycobacterium Avium Complex Infection(A31.2, A15.0, A31.0)

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Learn about the ICD-10 coding and documentation requirements for Mycobacterium Avium Complex infection, including key codes, documentation tips, and common pitfalls.

Also known as:

MAC InfectionDisseminated MACPulmonary MAC

Related ICD-10 Code Ranges

Complete code families applicable to Mycobacterium Avium Complex Infection

A00-B99Primary Range

Certain infectious and parasitic diseases

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
A31.2	Disseminated 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
A31.0	Pulmonary mycobacterium avium-intracellulare complex	Use for pulmonary MAC infections with specific radiographic and culture findings.	Chronic cough Bronchiectasis/nodules on CT Positive sputum cultures

Primary ICD-10-CM Codes

Disseminated mycobacterium avium-intracellulare complex (DMAC)

A31.2Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Pulmonary mycobacterium avium-intracellulare complexA31.0

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

Tuberculosis of lungA15.0

Use if AFB smear positive but MAC culture negative.

Documentation & Coding Risks

Avoid these common issues when documenting Mycobacterium Avium Complex Infection.

Failure to specify dissemination in documentation.

Impact

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

Mitigation

Ensure detailed documentation of infection extent.

Coding A31.2 without documentation of dissemination.

Impact

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

Mitigation

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

MAC coding in HIV patients

Impact

Incorrect sequencing of HIV and MAC codes.

Mitigation

Educate coders on proper sequencing rules.

Frequently Asked Questions

Primary Code

A31.2

Disseminated mycobacterium avium-intracellulare complex (DMAC)

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