2021 ICD-10-CM Code M21.829

Other specified acquired deformities of unspecified upper arm

Version 2021
Billable Code
Unspecified Code
MS-DRG Mapping

Valid for Submission

M21.829 is a billable diagnosis code used to specify a medical diagnosis of other specified acquired deformities of unspecified upper arm. The code M21.829 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

The ICD-10-CM code M21.829 might also be used to specify conditions or terms like abnormal prominence of acromion, abnormal prominence of scapula, acquired ape hand, acquired deformity of the thumb, bowing of upper arm , bowing of upper limb, etc.

Unspecified diagnosis codes like M21.829 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.

ICD-10:M21.829
Short Description:Oth acquired deformities of unspecified upper arm
Long Description:Other specified acquired deformities of unspecified upper arm

Code Classification

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Convert M21.829 to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code M21.829 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Information for Patients


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

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)