M65.1
⚠ Non-billable (Header)Other infective (teno)synovitis
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)
M65.10Other infective (teno)synovitis, unspecified siteM65.11Other infective (teno)synovitis, shoulderM65.12Other infective (teno)synovitis, elbowM65.13Other infective (teno)synovitis, wristM65.14Other infective (teno)synovitis, handM65.15Other infective (teno)synovitis, hipM65.16Other infective (teno)synovitis, kneeM65.17Other infective (teno)synovitis, ankle and footM65.18Other infective (teno)synovitis, other siteM65.19Other infective (teno)synovitis, multiple sites
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CodeM65.1
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)