M20.0 - Deformity of finger(s)

Version 2023
ICD-10:M20.0
Short Description:Deformity of finger(s)
Long Description:Deformity of finger(s)
Status: Not Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Other joint disorders (M20-M25)
      • Acquired deformities of fingers and toes (M20)

M20.0 is a non-specific and non-billable ICD-10 code code, consider using a code with a higher level of specificity for a diagnosis of deformity of finger(s). The code is not specific and is NOT valid for the year 2023 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding for Deformity of finger(s)

Non-specific codes like M20.0 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for deformity of finger(s):

  • NON-BILLABLE CODE - M20.00 for Unspecified deformity of finger(s)
  • BILLABLE CODE - Use M20.001 for Unspecified deformity of right finger(s)
  • BILLABLE CODE - Use M20.002 for Unspecified deformity of left finger(s)
  • BILLABLE CODE - Use M20.009 for Unspecified deformity of unspecified finger(s)
  • NON-BILLABLE CODE - M20.01 for Mallet finger
  • BILLABLE CODE - Use M20.011 for Mallet finger of right finger(s)
  • BILLABLE CODE - Use M20.012 for Mallet finger of left finger(s)
  • BILLABLE CODE - Use M20.019 for Mallet finger of unspecified finger(s)
  • NON-BILLABLE CODE - M20.02 for Boutonniere deformity
  • BILLABLE CODE - Use M20.021 for Boutonniere deformity of right finger(s)
  • BILLABLE CODE - Use M20.022 for Boutonniere deformity of left finger(s)
  • BILLABLE CODE - Use M20.029 for Boutonniere deformity of unspecified finger(s)
  • NON-BILLABLE CODE - M20.03 for Swan-neck deformity
  • BILLABLE CODE - Use M20.031 for Swan-neck deformity of right finger(s)
  • BILLABLE CODE - Use M20.032 for Swan-neck deformity of left finger(s)
  • BILLABLE CODE - Use M20.039 for Swan-neck deformity of unspecified finger(s)
  • NON-BILLABLE CODE - M20.09 for Other deformity of finger(s)
  • BILLABLE CODE - Use M20.091 for Other deformity of right finger(s)
  • BILLABLE CODE - Use M20.092 for Other deformity of left finger(s)
  • BILLABLE CODE - Use M20.099 for Other deformity of finger(s), unspecified finger(s)

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to this diagnosis code:


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Patient Education


Finger Injuries and Disorders

You use your fingers and thumbs to do everything from grasping objects to playing musical instruments to typing. When there is something wrong with them, it can make life difficult. Common problems include:


[Learn More in MedlinePlus]

Code History