M65.9
⚠ Non-billable (Header)Synovitis and tenosynovitis, unspecified
Diseases of the musculoskeletal system and connective tissue (M00-M99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
inherited from M65Rules from parent category M65: Synovitis and tenosynovitis
- • chronic crepitant synovitis of hand and wrist (M70.0-)
- • current injury - see injury of ligament or tendon by body region
- • soft tissue disorders related to use, overuse and pressure (M70.-)
Child Codes (10)
M65.90Unspecified synovitis and tenosynovitis, unspecified siteM65.91Unspecified synovitis and tenosynovitis, shoulderM65.92Unspecified synovitis and tenosynovitis, upper armM65.93Unspecified synovitis and tenosynovitis, forearmM65.94Unspecified synovitis and tenosynovitis, handM65.95Unspecified synovitis and tenosynovitis, thighM65.96Unspecified synovitis and tenosynovitis, lower legM65.97Unspecified synovitis and tenosynovitis, ankle and footM65.98Unspecified synovitis and tenosynovitis, other siteM65.99Unspecified synovitis and tenosynovitis, multiple sites
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CodeM65.9
BillableNo — Header code
ParentM65
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes13 rule(s)
Excludes20 note(s)
Child codes10
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)