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M20.02

M20.02: Boutonniere deformity

Non-billable headerICD-10-CM

M20.02 is a non-billable header ICD-10-CM code for boutonniere deformity. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above M20.02

A category’s note binds every code beneath it.

Written on M20.0: Deformity of finger(s)

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

Written on M20: Acquired deformities of fingers and toes

  • acquired absence of fingers and toes (Z89.-)
  • congenital absence of fingers and toes (Q71.3-, Q72.3-)
  • congenital deformities and malformations of fingers and toes (Q66.-, Q68-Q70, Q74.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead M20.02

3 child codes. Green means billable.

Other codes under M20.0

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.