M21.93 - Unspecified acquired deformity of forearm

Version 2023
ICD-10:M21.93
Short Description:Unspecified acquired deformity of forearm
Long Description:Unspecified acquired deformity of forearm
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)

M21.93 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 unspecified acquired deformity of forearm. 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.

Unspecified diagnosis codes like M21.93 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Specific Coding for Unspecified acquired deformity of forearm

Non-specific codes like M21.93 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 unspecified acquired deformity of forearm:

  • BILLABLE CODE - Use M21.931 for Unspecified acquired deformity of right forearm
  • BILLABLE CODE - Use M21.932 for Unspecified acquired deformity of left forearm
  • BILLABLE CODE - Use M21.939 for Unspecified acquired deformity of unspecified forearm

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.


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Code History