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  6. 2024 ICD-10-CM Code G57.9

2024 ICD-10-CM Diagnosis Code G57.9

Unspecified mononeuropathy of lower limb

ICD-10-CM Code:
G57.9
ICD-10 Code for:
Unspecified mononeuropathy of lower limb
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Diseases of the nervous system
    (G00–G99)
    • Nerve, nerve root and plexus disorders
      (G50-G59)
      • Mononeuropathies of lower limb
        (G57)

G57.9 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of unspecified mononeuropathy of lower limb. The code is not specific and is NOT valid for the year 2024 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 G57.9 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 Applicable to Unspecified mononeuropathy of lower limb

Non-specific codes like G57.9 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for unspecified mononeuropathy of lower limb:

  • 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 - BILLABLE CODE

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.