A31.8

What This Code Means

This code represents infections caused by mycobacteria other than tuberculosis or leprosy, such as infections from atypical mycobacteria (MAC - Mycobacterium avium complex) or other rare mycobacterial species. These infections can affect various body systems and are often seen in immunocompromised patients.

Coding Tips

• •Verify the specific mycobacterial organism identified in the documentation, as more specific codes may be available (A31.0-A31.7) for conditions like pulmonary nontuberculous mycobacterial infection or mycobacterial skin infections
• •Document the site of infection and patient's immune status, as this information helps justify medical necessity and may support higher severity coding if applicable