G57.23 ICD-10-CM Code: Lesion of femoral nerve, bilateral lower limbs
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FY 2026 Apr update / Diseases of the nervous system (G00-G99) / Nerve, nerve root and plexus disorders (G50-G59)
G57.23
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceLesion of femoral nerve, bilateral lower limbs
This code describes damage or injury to the femoral nerve that affects both legs. The femoral nerve controls movement and sensation in the thigh and lower leg, so damage to it can cause weakness, pain, or numbness in both lower limbs.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
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Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for G57.23 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for G57.23 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for G57.23 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for G57.23 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for G57.23 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for G57.23 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for G57.23 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is G57.23 an HCC code?
No. G57.23 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
G57.23 is the ICD-10-CM diagnosis code for lesion of femoral nerve, bilateral lower limbs. This code describes damage or injury to the femoral nerve that affects both legs. The femoral nerve controls movement and sensation in the thigh and lower leg, so damage to it can cause weakness, pain, or numbness in both lower limbs. G57.23 sits in the ICD-10-CM chapter for diseases of the nervous system (g00-g99), within the section covering nerve, nerve root and plexus disorders (g50-g59).
G57.23 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Verify that the femoral nerve lesion is documented as bilateral (affecting both sides) before assigning this code; unilateral lesions use G57.2 with different laterality indicators.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for G57.23 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify that the femoral nerve lesion is documented as bilateral (affecting both sides) before assigning this code; unilateral lesions use G57.2 with different laterality indicators
- •Document the underlying cause of the lesion (trauma, compression, ischemia, etc.) as this may require an additional code to fully describe the clinical picture