G58.7 ICD-10-CM Code: Mononeuritis multiplex
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FY 2026 Apr update / Diseases of the nervous system (G00-G99) / Nerve, nerve root and plexus disorders (G50-G59)
G58.7
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceMononeuritis multiplex
Mononeuritis multiplex is a condition where multiple individual nerves in different parts of the body become inflamed or damaged, causing weakness, pain, or numbness in the areas those nerves control. This condition often develops suddenly or over a short period and can affect various limbs or body regions.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
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Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for G58.7 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for G58.7 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for G58.7 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for G58.7 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for G58.7 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for G58.7 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for G58.7 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is G58.7 an HCC code?
No. G58.7 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
G58.7 is the ICD-10-CM diagnosis code for mononeuritis multiplex. Mononeuritis multiplex is a condition where multiple individual nerves in different parts of the body become inflamed or damaged, causing weakness, pain, or numbness in the areas those nerves control. This condition often develops suddenly or over a short period and can affect various limbs or body regions. G58.7 sits in the ICD-10-CM chapter for diseases of the nervous system (g00-g99), within the section covering nerve, nerve root and plexus disorders (g50-g59).
G58.7 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Always investigate the underlying cause of mononeuritis multiplex, as it is often secondary to conditions like diabetes, vasculitis, or infections; code the underlying condition as well when documented.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for G58.7 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Always investigate the underlying cause of mononeuritis multiplex, as it is often secondary to conditions like diabetes, vasculitis, or infections; code the underlying condition as well when documented
- •Specify the location and affected nerves when possible, as additional codes may be needed to indicate which specific nerves or body regions are involved (e.g., upper limb, lower limb)