ICD-10-CM Code R94.13

Abnormal results of function studies of peripheral nervous system

Version 2020 Non-Billable Code No Valid Principal Dx

Not Valid for Submission

R94.13 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of abnormal results of function studies of peripheral nervous system. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:R94.13
Short Description:Abnormal results of function studies of prph nervous sys
Long Description:Abnormal results of function studies of peripheral nervous system

Consider the following ICD-10 codes with a higher level of specificity:

  • R94.130 - Abnormal response to nerve stimulation, unspecified
  • R94.131 - Abnormal electromyogram [EMG]
  • R94.138 - Abnormal results of other function studies of peripheral nervous system

Code Classification

  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
      • Abnormal results of function studies (R94)

Code History

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

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

  • Numbness
  • Pain
  • Burning or tingling
  • Muscle weakness
  • Sensitivity to touch

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

NIH: National Institute of Neurological Disorders and Stroke


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