ICD-10-CM 2027 diagnosis code
A87Viral meningitis
A87 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About A87
A87 is the ICD-10-CM diagnosis code for viral meningitis. It belongs to block A80-A89 (viral and prion infections of the central nervous system) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: A87.0 (meningitis), A87.1 (meningitis), A87.2 (choriomeningitis), A87.8 (meningitis) and A87.9 (unspecified).
Don't report A87 together with the conditions in its Excludes1 note: 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) and 2 more.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under A87
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to A87.
Broader instructions also apply from A80-A89 Viral and prion infections of the central nervous system and Chapter 1: Certain infectious and parasitic diseases.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about A87
Is A87 billable?
- No. A87 is a header code. Report one of its more specific subcodes instead.