M21.72 - Unequal limb length (acquired), humerus

Version 2023
ICD-10:M21.72
Short Description:Unequal limb length (acquired), humerus
Long Description:Unequal limb length (acquired), humerus
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)
      • Other acquired deformities of limbs (M21)

M21.72 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 unequal limb length (acquired), humerus. 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 Unequal limb length (acquired), humerus

Non-specific codes like M21.72 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 unequal limb length (acquired), humerus:

  • BILLABLE CODE - Use M21.721 for Unequal limb length (acquired), right humerus
  • BILLABLE CODE - Use M21.722 for Unequal limb length (acquired), left humerus
  • BILLABLE CODE - Use M21.729 for Unequal limb length (acquired), unspecified humerus

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


Arm Injuries and Disorders

Of the 206 bones in your body, three of them are in your arm: the humerus, radius, and ulna. Your arms are also made up of muscles, joints, tendons, and other connective tissue. Injuries to any of these parts of the arm can occur during sports, a fall, or an accident.

Types of arm injuries include :

You may also have problems or injure specific parts of your arm, such as your hand, wrist, elbow, or shoulder.


[Learn More in MedlinePlus]

Code History