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M20.02

⚠ Non-billable (Header)

Boutonnière deformity

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.

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❌ Excludes1

inherited from M20.0

Rules from parent category M20.0: Deformity of finger(s)

  • • clubbing of fingers (R68.3)
  • • palmar fascial fibromatosis [Dupuytren] (M72.0)
  • • trigger finger (M65.3)

Child Codes (3)

M20.021Boutonnière deformity of right finger(s)M20.022Boutonnière deformity of left finger(s)M20.029Boutonnière deformity of unspecified finger(s)

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Code Information

CodeM20.02
BillableNo — Header code
ParentM20.0
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)