ICD-10 M65.861
Billable / SpecificOther synovitis and tenosynovitis, right lower leg
About ICD-10-CM M65.861
ICD-10-CM code M65.861 represents Other synovitis and tenosynovitis, right lower leg. This is a billable/specific code in the Musculoskeletal and Connective Tissue chapter (block M65). The 2026 edition of ICD-10-CM M65.861 became effective on October 1, 2025.
Medicare LCD Coverage for M65.861
Local Coverage Determinations (LCDs) from CMS MACs that list M65.861 as a covered diagnosis.
Showing top 10 of 130 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing M65.861.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with M65.861
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert M65.861 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| M65.861 | 72709 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To M65.861
Other codes in section M65-M67 (Disorders of synovium and tendon).
ICD-10 M65.861, Billing FAQ
Is ICD-10 code M65.861 billable? +
Yes, M65.861 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What ICD-9 codes does M65.861 map to? +
Per CMS GEMs, M65.861 maps to ICD-9 codes: 72709. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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