2027 ICD-10-CM Diagnosis Code A87.8Other viral meningitis
ICD-10-CM Codes›A00–B99›A80-A89›A87
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
A87.8 is a billable ICD-10-CM diagnosis code for other viral meningitis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 75 through 76. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 55 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Meningitis and Viral infection.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Arbovirus meningitis
- Arenavirus meningitis
- California Orthobunyavirus viral meningitis
- Disease caused by West Nile virus
- Disorder of nervous system caused by West Nile virus
- Infection caused by Junin virus
- Infection caused by Lassa virus
- Infection caused by Machupo virus
- Jamestown Canyon virus disease
- Junin virus meningitis
- Lassa virus meningitis
- Machupo virus meningitis
- Meningitis caused by Jamestown Canyon virus
- Meningitis caused by Keystone virus
- Meningitis caused by Paramyxovirus
- Meningitis caused by Saint Louis encephalitis virus
- Meningitis caused by snowshoe hare virus
- Meningitis caused by West Nile virus
- Snowshoe hare virus encephalitis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to A87.8: its own notes plus those printed at A87, block A80-A89, and Chapter 1. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- diseases generally recognized as communicable or transmissible
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify resistance to antimicrobial drugs (Z16.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Meningitis, Viral
viral infections of the leptomeninges and subarachnoid space. togaviridae infections; flaviviridae infections; rubella; bunyaviridae infections; orbivirus infections; picornaviridae infections; orthomyxoviridae infections; rhabdoviridae infections; arenaviridae infections; herpesviridae infections; adenoviridae infections; jc virus infections; and retroviridae infections may cause this form of meningitis. clinical manifestations include fever, headache, neck pain, vomiting, photophobia, and signs of meningeal irritation. (from joynt, clinical neurology, 1996, ch26, pp1-3)
Patient EducationClinical
Meningitis
Meningitis is inflammation of the thin tissue that surrounds the brain and spinal cord, called the meninges. There are several types of meningitis. The most common is viral meningitis. You get it when a virus enters the body through the nose or mouth and travels to the brain. Bacterial meningitis is rare but can be deadly.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert A87.8 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About A87.8Overview
What is the ICD-10 code for other viral meningitis?
The ICD-10-CM code for other viral meningitis is A87.8 (sometimes written as A878). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is A87.8 (Viral meningitis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other viral meningitis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does A87.8 group to?
When other viral meningitis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 75, 76, with relative weights from 0.8672 to 1.7699 depending on complications. Higher weights mean higher Medicare reimbursement.
Is A87.8 a CC or MCC?
CMS lists A87.8 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 55 closely related codes in its exclusion list.
Can A87.8 be reported with B00.3?
Not as a rule. The Excludes1 note at A87, which applies to A87.8, lists "meningitis due to herpesvirus [herpes simplex] (B00.3)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
