Z13.858 ICD-10-CM Code: Encounter for screening for other nervous system disorders
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FY 2026 Apr update / Factors influencing health status and contact with health services (Z00-Z99) / Persons encountering health services for examinations (Z00-Z13)
Z13.858
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceEncounter for screening for other nervous system disorders
A preventive health visit to screen for nervous system disorders such as neurological conditions affecting the brain, spinal cord, or nerves.
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 Z13.858 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for Z13.858 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for Z13.858 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for Z13.858 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for Z13.858 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for Z13.858 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for Z13.858 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 Z13.858 an HCC code?
No. Z13.858 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Z13.858 is the ICD-10-CM diagnosis code for encounter for screening for other nervous system disorders. A preventive health visit to screen for nervous system disorders such as neurological conditions affecting the brain, spinal cord, or nerves. Z13.858 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering persons encountering health services for examinations (z00-z13).
Z13.858 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.
Use for screening encounters in asymptomatic patients for conditions like Parkinson's disease, multiple sclerosis, or other neurological disorders.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z13.858 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use for screening encounters in asymptomatic patients for conditions like Parkinson's disease, multiple sclerosis, or other neurological disorders
- •Ensure the encounter is for screening purposes only; use diagnostic codes if symptoms are present