Villonodular synovitis (pigmented), left shoulder

This code represents a benign, proliferative condition affecting the synovial lining of the left shoulder joint, characterized by the growth of villous and nodular tissue. This overgrowth often contains hemosiderin deposits, giving it a pigmented appearance. It can lead to joint pain, swelling, and restricted range of motion.

Use this code for documented cases of pigmented villonodular synovitis (PVNS) specifically affecting the left shoulder. Supporting documentation should include pathology reports confirming PVNS, imaging findings (e.g., MRI) consistent with the diagnosis, and physician notes detailing the location and diagnosis.

• Ensure documentation clearly specifies "pigmented" if applicable, as non-pigmented forms exist (though less common).
• Verify the laterality; this code is specific to the left shoulder.
• Do not confuse with other inflammatory or degenerative arthropathies; PVNS is a distinct proliferative disorder.