2021 ICD-10-CM Code G57

Mononeuropathies of lower limb

Version 2021

Not Valid for Submission

G57 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of mononeuropathies of lower limb. The code is not specific and is NOT valid for the year 2021 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.

ICD-10:G57
Short Description:Mononeuropathies of lower limb
Long Description:Mononeuropathies of lower limb

Code Classification

Specific Coding for Mononeuropathies of lower limb

Non-specific codes like G57 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 mononeuropathies of lower limb:

  • NON-BILLABLE CODE - G57.0 for Lesion of sciatic nerve
  • BILLABLE CODE - Use G57.00 for Lesion of sciatic nerve, unspecified lower limb
  • BILLABLE CODE - Use G57.01 for Lesion of sciatic nerve, right lower limb
  • BILLABLE CODE - Use G57.02 for Lesion of sciatic nerve, left lower limb
  • BILLABLE CODE - Use G57.03 for Lesion of sciatic nerve, bilateral lower limbs
  • NON-BILLABLE CODE - G57.1 for Meralgia paresthetica
  • BILLABLE CODE - Use G57.10 for Meralgia paresthetica, unspecified lower limb
  • BILLABLE CODE - Use G57.11 for Meralgia paresthetica, right lower limb
  • BILLABLE CODE - Use G57.12 for Meralgia paresthetica, left lower limb
  • BILLABLE CODE - Use G57.13 for Meralgia paresthetica, bilateral lower limbs
  • NON-BILLABLE CODE - G57.2 for Lesion of femoral nerve
  • BILLABLE CODE - Use G57.20 for Lesion of femoral nerve, unspecified lower limb
  • BILLABLE CODE - Use G57.21 for Lesion of femoral nerve, right lower limb
  • BILLABLE CODE - Use G57.22 for Lesion of femoral nerve, left lower limb
  • BILLABLE CODE - Use G57.23 for Lesion of femoral nerve, bilateral lower limbs
  • NON-BILLABLE CODE - G57.3 for Lesion of lateral popliteal nerve
  • BILLABLE CODE - Use G57.30 for Lesion of lateral popliteal nerve, unspecified lower limb
  • BILLABLE CODE - Use G57.31 for Lesion of lateral popliteal nerve, right lower limb
  • BILLABLE CODE - Use G57.32 for Lesion of lateral popliteal nerve, left lower limb
  • BILLABLE CODE - Use G57.33 for Lesion of lateral popliteal nerve, bilateral lower limbs
  • NON-BILLABLE CODE - G57.4 for Lesion of medial popliteal nerve
  • BILLABLE CODE - Use G57.40 for Lesion of medial popliteal nerve, unspecified lower limb
  • BILLABLE CODE - Use G57.41 for Lesion of medial popliteal nerve, right lower limb
  • BILLABLE CODE - Use G57.42 for Lesion of medial popliteal nerve, left lower limb
  • BILLABLE CODE - Use G57.43 for Lesion of medial popliteal nerve, bilateral lower limbs
  • NON-BILLABLE CODE - G57.5 for Tarsal tunnel syndrome
  • BILLABLE CODE - Use G57.50 for Tarsal tunnel syndrome, unspecified lower limb
  • BILLABLE CODE - Use G57.51 for Tarsal tunnel syndrome, right lower limb
  • BILLABLE CODE - Use G57.52 for Tarsal tunnel syndrome, left lower limb
  • BILLABLE CODE - Use G57.53 for Tarsal tunnel syndrome, bilateral lower limbs
  • NON-BILLABLE CODE - G57.6 for Lesion of plantar nerve
  • BILLABLE CODE - Use G57.60 for Lesion of plantar nerve, unspecified lower limb
  • BILLABLE CODE - Use G57.61 for Lesion of plantar nerve, right lower limb
  • BILLABLE CODE - Use G57.62 for Lesion of plantar nerve, left lower limb
  • BILLABLE CODE - Use G57.63 for Lesion of plantar nerve, bilateral lower limbs
  • NON-BILLABLE CODE - G57.7 for Causalgia of lower limb
  • BILLABLE CODE - Use G57.70 for Causalgia of unspecified lower limb
  • BILLABLE CODE - Use G57.71 for Causalgia of right lower limb
  • BILLABLE CODE - Use G57.72 for Causalgia of left lower limb
  • BILLABLE CODE - Use G57.73 for Causalgia of bilateral lower limbs
  • NON-BILLABLE CODE - G57.8 for Other specified mononeuropathies of lower limb
  • BILLABLE CODE - Use G57.80 for Other specified mononeuropathies of unspecified lower limb
  • BILLABLE CODE - Use G57.81 for Other specified mononeuropathies of right lower limb
  • BILLABLE CODE - Use G57.82 for Other specified mononeuropathies of left lower limb
  • BILLABLE CODE - Use G57.83 for Other specified mononeuropathies of bilateral lower limbs
  • NON-BILLABLE CODE - G57.9 for Unspecified mononeuropathy of lower limb
  • BILLABLE CODE - Use G57.90 for Unspecified mononeuropathy of unspecified lower limb
  • BILLABLE CODE - Use G57.91 for Unspecified mononeuropathy of right lower limb
  • BILLABLE CODE - Use G57.92 for Unspecified mononeuropathy of left lower limb
  • BILLABLE CODE - Use G57.93 for Unspecified mononeuropathy of bilateral lower limbs

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code G57:


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Information for Patients


Peripheral Nerve Disorders

Also called: Neuritis, Peripheral neuritis, Peripheral neuropathy

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]

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)