M65-M67: Disorders of synovium and tendon
ICD-10-CM codes M65-M67 cover disorders of synovium and tendon, within diseases of the musculoskeletal system and connective tissue. The block holds 502 codes across 3 categories, of which 379 are billable and 123 are header codes that cannot be submitted on a claim.
What else to watch in M65-M67
- 228 codes are laterality-specific. They come in left and right pairs, and the pair is mutually exclusive on a single site: coding both without a bilateral code is a contradiction a scrubber should catch before the payer does.
- 379 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.