ICD-10 G57.91
Billable / SpecificUnspecified mononeuropathy of right lower limb
About ICD-10-CM G57.91
ICD-10-CM code G57.91 represents Unspecified mononeuropathy of right lower limb. This is a billable/specific code in the Nervous System chapter (block G57). The 2026 edition of ICD-10-CM G57.91 became effective on October 1, 2025.
Medicare LCD Coverage for G57.91
Local Coverage Determinations (LCDs) from CMS MACs that list G57.91 as a covered diagnosis.
Showing top 10 of 448 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing G57.91.
3 Cigna
5 Medicare
CPT Codes Commonly Billed with G57.91
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 98943 CMS LCD: Billing and Coding: Chiropractic Services CMS LCD
Convert G57.91 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| G57.91 | 3558 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To G57.91
Other codes in section G50-G59 (Nerve, nerve root and plexus disorders).
ICD-10 G57.91, Billing FAQ
Is ICD-10 code G57.91 billable? +
Yes, G57.91 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What CPT codes are commonly billed with G57.91? +
Procedures frequently paired with G57.91 include: 98943.
What ICD-9 codes does G57.91 map to? +
Per CMS GEMs, G57.91 maps to ICD-9 codes: 3558. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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