M25.42
⚠ Non-billable (Header)Effusion, elbow
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 M25.4Rules from parent category M25.4: Effusion of joint
- • hydrarthrosis in yaws (A66.6)
- • intermittent hydrarthrosis (M12.4-)
- • other infective (teno)synovitis (M65.1-)
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CodeM25.42
BillableNo — Header code
ParentM25.4
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes13 rule(s)
Excludes20 note(s)
Child codes3
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)