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ICD-10 diagnosis code

M20.0 Deformity of finger(s)

This page in Swedish

M20.0 is the ICD-10 code for Deformity of finger(s). It is a four-character subcategory of M20 (Acquired deformities of fingers and toes), the most specific level in the WHO edition. It belongs to the block M20–M25 (Other joint disorders) in Chapter XIII, Diseases of the musculoskeletal system and connective tissue.

Code type
Subcategory (4 characters)
Chapter
XIII · M00–M99
Classification
WHO ICD-10, 2019 version

What M20.0 includes

Conditions and terms that are coded here.

  • Boutonnière and swan-neck deformities

What M20.0 excludes

Conditions that look similar but belong under another code.

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

M20.0 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

M20.0Deformitet av finger (fingrar)

NorwayICD-10-NO

M20.0Ervervet fingerdeformitet

DenmarkICD-10-DK

DM200Deformitet af fingre

  • DM200ADigitus varus manus
  • DM200BDigitus valgus manus
  • DM200CKnaphulsdeformitet
  • DM200EDigitus rigidus manus
  • DM200FSvanehalsdeformitet
FinlandICD-10-FI

Listed through more specific codes:

  • M20.00Sormien napinläpiepämuotoisuus
  • M20.01Sormien joutsenkaulaepämuotoisuus
  • M20.08Muu sormien epämuotoisuus
GermanyICD-10-GM

M20.0Deformität eines oder mehrerer Finger

FranceICD-10-FR

M20.0Déformation de(s) doigt(s)

NetherlandsICD-10-NL

M20.0misvorming van vinger(s)

United StatesICD-10-CM

Listed through more specific codes:

  • M20.001Unspecified deformity of right finger(s)
  • M20.002Unspecified deformity of left finger(s)
  • M20.009Unspecified deformity of unspecified finger(s)
  • M20.011Mallet finger of right finger(s)
  • M20.012Mallet finger of left finger(s)
  • M20.019Mallet finger of unspecified finger(s)
  • M20.021Boutonniere deformity of right finger(s)
  • M20.022Boutonniere deformity of left finger(s)
  • and 7 more national subcodes

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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