M20.4 - Other hammer toe(s) (acquired)

Version 2023
ICD-10:M20.4
Short Description:Other hammer toe(s) (acquired)
Long Description:Other hammer toe(s) (acquired)
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)

M20.4 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 other hammer toe(s) (acquired). 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 Other hammer toe(s) (acquired)

Non-specific codes like M20.4 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 other hammer toe(s) (acquired):

  • BILLABLE CODE - Use M20.40 for Other hammer toe(s) (acquired), unspecified foot
  • BILLABLE CODE - Use M20.41 for Other hammer toe(s) (acquired), right foot
  • BILLABLE CODE - Use M20.42 for Other hammer toe(s) (acquired), left foot

Index to Diseases and Injuries References

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for this diagnosis code are found in the injuries and diseases index:

Patient Education


Toe Injuries and Disorders

Fourteen of the 26 bones in your feet are in your toes. The toes, particularly your big toe, help you move and keep your balance. Playing sports, running, stubbing your toe, and dropping something on your foot can damage your toes. Wearing shoes that are too loose or too tight can also cause toe problems. Certain diseases, such as severe arthritis, can cause toe problems and pain. Gout often causes pain in the big toe.

Common toe problems include :

Treatments for toe injuries and disorders vary. They might include shoe inserts or special shoes, padding, taping, medicines, rest, and in severe cases, surgery.


[Learn More in MedlinePlus]

Code History