Other infective (teno)synovitis, right ankle and foot

This code signifies inflammation of a tendon sheath (tenosynovitis) or the synovial membrane lining a joint (synovitis) in the right ankle and foot, specifically when caused by an infection other than those classified as pyogenic or tuberculous. It indicates an inflammatory response within these structures due to a microbial agent.

Apply this code when documentation specifies an infective tenosynovitis or synovitis affecting the right ankle or foot, and the infection is not explicitly stated as pyogenic (e.g., staphylococcal, streptococcal) or tuberculous. Supporting documentation should include a confirmed infectious etiology, such as positive culture results or clinical diagnosis of an infection.

• Differentiate from pyogenic (M65.0-) and tuberculous (M65.2-) infective tenosynovitis/synovitis; ensure the specific infectious agent is considered.
• Always specify laterality (right, left, bilateral) for ankle and foot conditions.
• Code any underlying systemic infection or specific infectious agent (e.g., B95-B97 for bacterial agents) as an additional diagnosis, if known.