2022 ICD-10-CM Code S44.31

Injury of axillary nerve, right arm

Version 2021

Not Valid for Submission

ICD-10:S44.31
Short Description:Injury of axillary nerve, right arm
Long Description:Injury of axillary nerve, right arm

Code Classification

  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Injuries to the shoulder and upper arm (S40-S49)
      • Injury of nerves at shoulder and upper arm level (S44)

S44.31 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of injury of axillary nerve, right arm. The code is not specific and is NOT valid for the year 2022 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.

Coding Guidelines

The appropriate 7th character is to be added to each code from block Injury of nerves at shoulder and upper arm level (S44). Use the following options for the aplicable episode of care:

Specific Coding for Injury of axillary nerve, right arm

Non-specific codes like S44.31 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 injury of axillary nerve, right arm:

  • BILLABLE CODE - Use S44.31XA for initial encounter
  • BILLABLE CODE - Use S44.31XD for subsequent encounter
  • BILLABLE CODE - Use S44.31XS for sequela

Information for Patients


Peripheral Nerve Disorders

Your peripheral nerves are the ones outside your brain and spinal cord. Like static on a telephone line, peripheral nerve disorders distort or interrupt the messages between the brain and the rest of the body.

There are more than 100 kinds of peripheral nerve disorders. They can affect one nerve or many nerves. Some are the result of other diseases, like diabetic nerve problems. Others, like Guillain-Barre syndrome, happen after a virus infection. Still others are from nerve compression, like carpal tunnel syndrome or thoracic outlet syndrome. In some cases, like complex regional pain syndrome and brachial plexus injuries, the problem begins after an injury. Some people are born with peripheral nerve disorders.

Symptoms often start gradually, and then get worse. They include

Treatment aims to treat any underlying problem, reduce pain and control symptoms.

NIH: National Institute of Neurological Disorders and Stroke


[Learn More in MedlinePlus]

Shoulder Injuries and Disorders

Your shoulder joint is composed of three bones: the clavicle (collarbone), the scapula (shoulder blade), and the humerus (upper arm bone). Your shoulders are the most movable joints in your body. They can also be unstable because the ball of the upper arm is larger than the shoulder socket that holds it. To remain in a stable or normal position, the shoulder must be anchored by muscles, tendons, and ligaments.

Because your shoulder can be unstable, it can be easily injured. Common problems include

Health care providers diagnose shoulder problems by using your medical history, a physical exam, and imaging tests.

Often, the first treatment for shoulder problems is RICE. This stands for Rest, Ice, Compression, and Elevation. Other treatments include exercise and medicines to reduce pain and swelling. If those don't work, you may need surgery.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases


[Learn More in MedlinePlus]

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)