G61.82 Multifocal motor neuropathy

Billable ICD-10-CM code, FY2026.

Applicable to

• MMN

Risk adjustment (HCC)

• CMS-HCC V28: HCC 193 — Chronic Inflammatory Demyelinating Polyneuritis and Multifocal Motor Neuropathy
• CMS-HCC V22: HCC 75 — Myasthenia Gravis/Myoneural Disorders, Inflammatory and Toxic Neuropathy
• RxHCC V08: HCC 157 — Chronic Inflammatory Demyelinating Polyneuritis�
• ESRD V24: HCC 75

MS-DRG index

Defines the logic of DRG(s) 073-074 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 357.89 Other inflammatory and toxic neuropathy (approximate)

Diagnosis Index entries for G61.82

• MMN (multifocal motor neuropathy)
• Neuropathy, neuropathic › multifocal motor (MMN)

Nearby codes

• G61 Inflammatory polyneuropathy
• G61.0 Guillain-Barre syndrome
• G61.1 Serum neuropathy
• G61.8 Other inflammatory polyneuropathies
• G61.81 Chronic inflammatory demyelinating polyneuritis
• G61.82 Multifocal motor neuropathy (this code)
• G61.89 Other inflammatory polyneuropathies
• G61.9 Inflammatory polyneuropathy, unspecified