ICD-10 G46.6
Billable / SpecificPure sensory lacunar syndrome
About ICD-10-CM G46.6
ICD-10-CM code G46.6 represents Pure sensory lacunar syndrome. This is a billable/specific code in the Nervous System chapter (block G46). The 2026 edition of ICD-10-CM G46.6 became effective on October 1, 2025.
Medicare LCD Coverage for G46.6
Local Coverage Determinations (LCDs) from CMS MACs that list G46.6 as a covered diagnosis.
Showing top 10 of 200 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing G46.6.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with G46.6
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 93882 CMS LCD: Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies CMS LCD
Convert G46.6 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 |
|---|---|---|
| G46.6 | 4378 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To G46.6
Other codes in section G40-G47 (Episodic and paroxysmal disorders).
ICD-10 G46.6, Billing FAQ
Is ICD-10 code G46.6 billable? +
Yes, G46.6 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 G46.6? +
Procedures frequently paired with G46.6 include: 93882.
What ICD-9 codes does G46.6 map to? +
Per CMS GEMs, G46.6 maps to ICD-9 codes: 4378. Useful for legacy data review and historical claim analysis.
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team