Acute miliary tuberculosis, unspecified

This code represents a severe, disseminated form of tuberculosis characterized by the widespread presence of small, millet-seed sized lesions (tubercles) throughout multiple organs, with an acute onset and without further specification of the affected sites. It indicates a rapid progression of the disease, often affecting the lungs, liver, spleen, and bone marrow.

Use this code when documentation clearly indicates acute miliary tuberculosis without specifying the primary site or other affected organs. This diagnosis is typically supported by imaging studies showing diffuse nodular infiltrates, positive mycobacterial cultures, and clinical signs of systemic infection.

• Do not use this code if the specific organ(s) affected by miliary tuberculosis are documented; instead, use a more specific code from the A19 category.
• Always review documentation for acuity and dissemination to differentiate from other forms of tuberculosis.
• Consider sequencing this code as the primary diagnosis when it is the reason for the encounter, followed by codes for any associated manifestations.