Dissem mycobacterium avium-intracellulare complex (DMAC)

This code represents a widespread infection caused by bacteria belonging to the Mycobacterium avium complex (MAC), specifically when the infection has spread beyond a single organ system. It signifies a systemic involvement of these opportunistic pathogens, often seen in immunocompromised individuals.

Use this code for patients diagnosed with a disseminated MAC infection, meaning the infection has spread to multiple non-contiguous sites or involves the bloodstream. Documentation should clearly indicate systemic involvement, such as positive blood cultures for MAC, or evidence of MAC infection in multiple organs like the bone marrow, liver, or lymph nodes.

• Always confirm documentation specifies "disseminated" or systemic involvement; localized MAC infections are coded differently.
• Frequently co-occurs with codes for underlying immunocompromised states, such as HIV (B20).
• Ensure the specific MAC species (avium or intracellulare) is not separately coded unless a distinct, localized infection by that species is also present.