Infective myositis, unspecified leg

This code signifies an inflammatory condition of the muscle tissue in an unspecified leg, caused by an infectious agent. It indicates the presence of an infection within the muscle itself, leading to pain, swelling, and impaired function. The specific pathogen causing the infection is not identified.

Apply this code when documentation confirms infective myositis affecting a leg, but the laterality (right or left) is not specified. This code is appropriate when the medical record clearly states "infective myositis of the leg" without further anatomical detail.

• Do not use this code if the laterality (right or left leg) is documented; instead, choose the more specific M60.001 (right) or M60.002 (left).
• Always code the underlying infectious agent first, if known, using a B-code (e.g., B95-B97 for bacterial agents).
• Ensure documentation specifies "infective" myositis to differentiate from other forms of myositis (e.g., inflammatory, toxic).