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A87.0 ICD-10-CM Code: Enteroviral meningitis

A87.0 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools

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FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Viral and prion infections of the central nervous system (A80-A89)

A87.0

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Enteroviral meningitis

This is a viral infection of the protective membranes surrounding the brain and spinal cord caused by enteroviruses (a group of common viruses). Patients typically experience symptoms like fever, headache, neck stiffness, and sensitivity to light.

CMS-HCC V28

N/A

Not mapped

CMS-HCC V24

Historical

Historical

Not used for CY2026 payment

ACA/HHS

HCC 004

Code-level coefficient reference

ESRD/PACE

N/A

Not mapped

RXHCC

N/A

Not mapped

Code Book Path

Official
A87Viral meningitis
A87.0Enteroviral meningitis

Inclusion Terms

Official
  • Coxsackievirus meningitis
  • Echovirus meningitis

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for A87.0 in this effective period.

Related Child Codes

Official
A87.1Adenoviral meningitis
A87.2Lymphocytic choriomeningitis
A87.8Other viral meningitis
A87.9Viral meningitis, unspecified

Includes

Official

ICD-10-CM does not list Includes notes for A87.0 in this effective period.

Excludes 1

Official
  • meningitis due to herpesvirus [herpes simplex] (B00.3)
  • meningitis due to herpesvirus [herpes simplex] (B00.3)
  • meningitis due to measles virus (B05.1)
  • meningitis due to mumps virus (B26.1)
  • meningitis due to poliomyelitis virus (A80.-)

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for A87.0 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for A87.0 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for A87.0 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
Ensure the meningitis is confirmed to be enteroviral in origin through clinical documentation or test results before assigning this code
Do not use this code for bacterial meningitis or meningitis caused by other viral agents; verify the specific causative organism in the medical record

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 A87.0 an HCC code?

A87.0 is not in the CMS-HCC V28 or V24 community payment model. A87.0 also appears in the HHS-HCC commercial risk model (HCC 004 (HHS-HCC 004 adult, RAF varies by metal level)), which is a commercial market model rather than a Medicare Advantage payment mapping.

Code
A87.0
Description
Enteroviral meningitis
HCC (V28)
No CMS-HCC V28 mapping
RAF reference coefficient
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

A87.0 is the ICD-10-CM diagnosis code for enteroviral meningitis. This is a viral infection of the protective membranes surrounding the brain and spinal cord caused by enteroviruses (a group of common viruses). Patients typically experience symptoms like fever, headache, neck stiffness, and sensitivity to light. A87.0 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering viral and prion infections of the central nervous system (a80-a89).

A87.0 has no mapping under the CMS-HCC V28 or V24 community payment models. A87.0 also appears in the HHS-HCC commercial risk model (HCC 004 (HHS-HCC 004 adult, RAF varies by metal level)), which is a commercial market model rather than a Medicare Advantage payment mapping. Do not assign V28 risk adjustment value from this page; verify the applicable model and payment year before using this code for risk adjustment.

Ensure the meningitis is confirmed to be enteroviral in origin through clinical documentation or test results before assigning this code.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for A87.0 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • Ensure the meningitis is confirmed to be enteroviral in origin through clinical documentation or test results before assigning this code
  • Do not use this code for bacterial meningitis or meningitis caused by other viral agents; verify the specific causative organism in the medical record

Child Codes

Code Hierarchy

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