G52.2 ICD-10-CM Code: Disorders of vagus nerve
HCC Buddy Code Card
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FY 2026 Apr update / Diseases of the nervous system (G00-G99) / Nerve, nerve root and plexus disorders (G50-G59)
G52.2
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceDisorders of vagus nerve
Problems with the vagus nerve that affect voice, swallowing, heart rate, and digestive function.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Disorders of pneumogastric [10th] nerve
Excludes 2
Official- disorders of acoustic [8th] nerve (H93.3)
- disorders of optic [2nd] nerve (H46, H47.0)
- paralytic strabismus due to nerve palsy (H49.0-H49.2)
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for G52.2 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for G52.2 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for G52.2 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for G52.2 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for G52.2 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is G52.2 an HCC code?
No. G52.2 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- G52.2
- Description
- Disorders of vagus nerve
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF
- —
- Billable
- Yes
- Payment year
- 2026
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
G52.2 is the ICD-10-CM diagnosis code for disorders of vagus nerve. Problems with the vagus nerve that affect voice, swallowing, heart rate, and digestive function. G52.2 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).
G52.2 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.
The vagus nerve has extensive functions; document which specific functions are affected (voice, swallowing, cardiac, GI).
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for G52.2 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •The vagus nerve has extensive functions; document which specific functions are affected (voice, swallowing, cardiac, GI)
- •Consider whether symptoms are unilateral or bilateral, as this may affect severity and treatment