Infective myositis, right foot

This code signifies an inflammatory condition of the muscles in the right foot caused by an infectious agent. It involves the direct invasion of muscle tissue by bacteria, viruses, fungi, or parasites, leading to pain, swelling, and impaired function.

Apply this code when documentation clearly indicates an infection of the muscle tissue specifically within the right foot. Supporting documentation should include physician notes detailing the infectious nature of the myositis, the affected anatomical site, and often, laboratory findings confirming an infectious etiology.

• Ensure the documentation specifies "infective" myositis, not just myositis, and clearly identifies the right foot.
• Do not use this code for non-infectious inflammatory myopathies; those have distinct coding pathways.
• Always sequence a code for the underlying infectious organism (e.g., B95-B97) as a secondary diagnosis, if known.