M66.1
Non-billableRupture of synovium
M66.1 is the ICD-10-CM code for Rupture of synovium. It is a non-billable category code — use a more specific child code such as M66.10 for billing.
M00-M99 Diseases of the musculoskeletal system and connective tissue
Includes
- •Rupture of synovial cyst
Excludes2 — not included here
- •rupture of popliteal cyst (M66.0)
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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