Toxoplasma myositis

This code represents inflammation of muscle tissue caused by infection with the parasite Toxoplasma gondii. It is a rare manifestation of toxoplasmosis, typically occurring in immunocompromised individuals. The condition can lead to muscle pain, weakness, and tenderness.

Assign this code when documentation explicitly states toxoplasma as the causative agent of myositis. This diagnosis is often seen in patients with HIV/AIDS, organ transplant recipients, or those undergoing immunosuppressive therapy. Supporting documentation should include laboratory confirmation of toxoplasmosis and clinical findings consistent with muscle inflammation.

• Do not use this code for myositis of unknown etiology or myositis due to other infectious agents.
• Always code the underlying condition (e.g., HIV disease) first, if applicable, as toxoplasmosis is often an opportunistic infection.
• Ensure documentation clearly links Toxoplasma infection to the myositis, rather than simply noting both conditions separately.