ICD-10 G51.1
Billable / SpecificGeniculate ganglionitis
About ICD-10-CM G51.1
ICD-10-CM code G51.1 represents Geniculate ganglionitis. This is a billable/specific code in the Nervous System chapter (block G51). The 2026 edition of ICD-10-CM G51.1 became effective on October 1, 2025.
Type 1 Excludes
Pure excludes, these codes can never be coded together with G51.1. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- postherpetic geniculate ganglionitis (B02.21)
Medicare LCD Coverage for G51.1
Local Coverage Determinations (LCDs) from CMS MACs that list G51.1 as a covered diagnosis.
Showing top 10 of 232 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing G51.1.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with G51.1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert G51.1 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 |
|---|---|---|
| G51.1 | 3511 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To G51.1
Other codes in section G50-G59 (Nerve, nerve root and plexus disorders).
ICD-10 G51.1, Billing FAQ
Is ICD-10 code G51.1 billable? +
Yes, G51.1 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What codes are Type 1 Excludes for G51.1? +
Type 1 Excludes (never code together with G51.1): postherpetic geniculate ganglionitis (B02.21)
What ICD-9 codes does G51.1 map to? +
Per CMS GEMs, G51.1 maps to ICD-9 codes: 3511. 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 June 1, 2026.
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