ICD-10 G61.82
Billable / Specific HCC v28: 75Multifocal motor neuropathy
About ICD-10-CM G61.82
ICD-10-CM code G61.82 represents Multifocal motor neuropathy. This is a billable/specific code in the Nervous System chapter (block G61). The 2026 edition of ICD-10-CM G61.82 became effective on October 1, 2025.
Coding Tips for G61.82
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
G61.82 is a CMS-HCC v28 risk-adjustment code (category 75). To count for the patient Risk Adjustment Factor (RAF), document the diagnosis with MEAT language each calendar year: Monitored, Evaluated, Assessed, Treated. A diagnosis on the problem list alone does not satisfy CMS RADV audit standards. Include the diagnosis in the assessment with current status and current treatment plan.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under G61.82. Per CMS ICD-10-CM Tabular 2026.
- MMN
Medicare Advantage HCC Impact
Capture this diagnosis annually for accurate risk adjustment. Missed HCC captures are the #1 revenue leak in Medicare Advantage risk programs.
Medicare LCD Coverage for G61.82
Local Coverage Determinations (LCDs) from CMS MACs that list G61.82 as a covered diagnosis.
Showing top 10 of 655 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing G61.82.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with G61.82
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
Convert G61.82 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 |
|---|---|---|
| G61.82 | 35789 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To G61.82
Other codes in section G60-G65 (Polyneuropathies and other disorders of the peripheral nervous system).
ICD-10 G61.82, Billing FAQ
Is ICD-10 code G61.82 billable? +
Yes, G61.82 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to G61.82? +
ICD-10 G61.82 includes: MMN.
Does G61.82 affect Medicare Advantage HCC risk adjustment? +
Yes. G61.82 maps to CMS-HCC v28 category 75. Capture this diagnosis annually for accurate Medicare Advantage risk score.
What CPT codes are commonly billed with G61.82? +
Procedures frequently paired with G61.82 include: J1551, J1559, J1576, J1558, J1555.
What ICD-9 codes does G61.82 map to? +
Per CMS GEMs, G61.82 maps to ICD-9 codes: 35789. 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 July 16, 2026.
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