Oth disrd of synovium and tendon, multiple sites

This code represents various non-inflammatory, non-traumatic conditions affecting the synovium (lining of joints) and tendons, not elsewhere classified, that manifest in more than one anatomical location. These disorders can include conditions like tenosynovitis, ganglion cysts, or other synovial proliferations when they occur simultaneously in multiple distinct sites. It excludes specific inflammatory or traumatic conditions and those with a more precise ICD-10-CM code.

Use this code when documentation clearly indicates a specified disorder of the synovium or tendon that affects multiple, distinct body sites and a more specific code is not available. This code is appropriate for conditions like diffuse tenosynovitis or multiple ganglion cysts that are not attributable to a specific injury or inflammatory process. Supporting documentation should detail the specific disorder and list the affected anatomical sites.

• Ensure the documentation specifies "multiple sites" to justify using this code; otherwise, a site-specific code (e.g., M67.81- for shoulder) may be more appropriate.
• Differentiate this from inflammatory conditions (e.g., M65.- for synovitis and tenosynovitis) or traumatic injuries (e.g., S-codes for sprains/strains).
• Avoid using this code if a more specific M67.8- subcategory exists that precisely describes the disorder and site(s).