M67.28 Synovial hypertrophy, not elsewhere classified, other site

Billable ICD-10-CM code, FY2026.

Applies from M67 Other disorders of synovium and tendon

Excludes1 (never code together)

• palmar fascial fibromatosis [Dupuytren] (M72.0)
• tendinitis NOS (M77.9-)
• xanthomatosis localized to tendons (E78.2)

Applies from M67.2 Synovial hypertrophy, not elsewhere classified

Excludes1 (never code together)

• villonodular synovitis (pigmented) (M12.2-)

MS-DRG index

Defines the logic of DRG(s) 557-558 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 727.89 Other disorders of synovium, tendon, and bursa (approximate)

Diagnosis Index entries for M67.28

• Hypertrophy, hypertrophic › synovial NEC › specified site NEC

Nearby codes

• M67.269 Synovial hypertrophy, not elsewhere classified, unspecified lower leg
• M67.27 Synovial hypertrophy, not elsewhere classified, ankle and foot
• M67.271 Synovial hypertrophy, not elsewhere classified, right ankle and foot
• M67.272 Synovial hypertrophy, not elsewhere classified, left ankle and foot
• M67.279 Synovial hypertrophy, not elsewhere classified, unspecified ankle and foot
• M67.28 Synovial hypertrophy, not elsewhere classified, other site (this code)
• M67.29 Synovial hypertrophy, not elsewhere classified, multiple sites
• M67.3 Transient synovitis
• M67.30 Transient synovitis, unspecified site
• M67.31 Transient synovitis, shoulder
• M67.311 Transient synovitis, right shoulder