2027 ICD-10-CM Diagnosis Code G57.03Lesion of sciatic nerve, bilateral lower limbs

ICD-10-CM Codes›G00–G99›G50-G59›G57

ICD-10-CM G57.03
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

G57.03 is a billable ICD-10-CM diagnosis code for lesion of sciatic nerve, bilateral lower limbs. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 73 through 74. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nerve and nerve root disorders.

Code Identity

ICD-10-CM Code
G57.03
Billable Status
Yes — Valid for Submission
Code Describes
Lesion of sciatic nerve, bilateral lower limbs
Short Description
Lesion of sciatic nerve, bilateral lower limbs
Same as the full description in the CMS dataset.
Parent Code
G57.0
Lesion of sciatic nerve

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG50-G59Nerve, nerve root and plexus disorders
CategoryG57Mononeuropathies of lower limb
This CodeG57.03Lesion of sciatic nerve, bilateral lower limbs

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral lower limb piriformis syndrome
  • Bilateral neuralgia of nerve of lower limbs
  • Bilateral sciatic nerve disorder
  • Bilateral sciatica
  • Disorder of left sciatic nerve
  • Disorder of right sciatic nerve
  • Left side sciatica
  • Left-sided piriformis syndrome
  • Lesion of bilateral sciatic nerves
  • Lesion of left sciatic nerve
  • Lesion of right sciatic nerve
  • Neuralgia of nerve of left lower limb
  • Neuralgia of nerve of right lower limb
  • Pain of bilateral thighs
  • Piriformis syndrome
  • Right side sciatica
  • Right-sided piriformis syndrome
  • Sciatic nerve lesion

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to G57.03: its own notes plus those printed at G57.0, G57, block G50-G59, and Chapter 6. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From G57.0 Lesion of sciatic nerve applies to 4 codes
From G57 Mononeuropathies of lower limb applies to 40 codes
  • current traumatic nerve disorder - see nerve injury by body region
From Block G50-G59 Nerve, nerve root and plexus disorders applies to 106 codes
  • current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
  • neuralgia NOS (M79.2)
  • neuritis NOS (M79.2)
  • peripheral neuritis in pregnancy (O26.82-)
  • radiculitis NOS (M54.1-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From G57.0 Lesion of sciatic nerve applies to 4 codes
  • sciatica attributed to intervertebral disc disorder (M51.1.-)
From Chapter 6 (G00-G99) Diseases of the nervous system applies to 700 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name G57.03, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming G57.03: they are not reported together with it, unless the two conditions are unrelated.

  • M54.3 Sciatica
    lesion of sciatic nerve (G57.0) names G57.0, which includes this code
  • M79.2 Neuralgia and neuritis, unspecified
    mononeuropathies (G56-G58) names G56-G58, which includes this code

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS017
Nerve and nerve root disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Peripheral Nerve Disorders

Nerves are like wires that carry messages back and forth between your brain and your body. Your peripheral nerves branch off from your brain and spinal cord and connect to all parts of your body, including your muscles and organs.

The full article covers:

  • What are peripheral nerves?
  • What are peripheral nerve disorders?
  • What causes peripheral nerve disorders?
  • What are the symptoms of peripheral nerve disorders?
  • How are peripheral nerve disorders diagnosed?
  • What are the treatments for peripheral nerve disorders?
  • Can peripheral nerve disorders be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert G57.03 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
355.0 Sciatic nerve lesion
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement G57.03 replaces the following previously assigned code(s):

  • G57.01 - Lesion of sciatic nerve, right lower limb
  • G57.02 - Lesion of sciatic nerve, left lower limb
FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About G57.03Overview

What is the ICD-10 code for lesion of sciatic nerve, bilateral lower limbs?

The ICD-10-CM code for lesion of sciatic nerve, bilateral lower limbs is G57.03 (sometimes written as G5703). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is G57.03 (Lesion of sciatic nerve) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report lesion of sciatic nerve, bilateral lower limbs on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does G57.03 group to?

When lesion of sciatic nerve, bilateral lower limbs is the principal diagnosis on an inpatient stay, it groups to MS-DRG 74, 73, with relative weights from 1.0172 to 1.5773 depending on complications. Higher weights mean higher Medicare reimbursement.

Can G57.03 be reported with a code from M54.3?

Not as a rule. The Excludes1 note at G57.0, which applies to G57.03, lists "sciatica NOS (M54.3-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of G57.03?

Under the General Equivalence Mappings, lesion of sciatic nerve, bilateral lower limbs converts to ICD-9-CM 355.0 (sciatic nerve lesion). The mapping is approximate, so confirm the match fits the documentation.