2026 ICD-10-CM Diagnosis Code G00Bacterial meningitis, not elsewhere classified

ICD-10-CM Codes›G00–G99›G00-G09›G00

ICD-10-CM G00
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G00 is a non-billable ICD-10-CM category code for bacterial meningitis, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as G00.0, G00.1, G00.2, and G00.3.

Code Identity

ICD-10-CM Code
G00
Billable Status
No — Non-Billable Category
Code Describes
Bacterial meningitis, not elsewhere classified
Chapter
G00-G09
Inflammatory diseases of the central nervous system

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG00-G09Inflammatory diseases of the central nervous system
CategoryG00Bacterial meningitis, not elsewhere classified
This CodeG00Bacterial meningitis, not elsewhere classified

Specific Coding for Bacterial meningitis, not elsewhere classifiedOverview

Non-specific codes like G00 require more characters. Use one of these billable codes instead:

  • Use G00.0 for Hemophilus meningitis

  • Use G00.1 for Pneumococcal meningitis

  • Use G00.2 for Streptococcal meningitis

  • Use G00.3 for Staphylococcal meningitis

  • Use G00.8 for Other bacterial meningitis

  • Use G00.9 for Bacterial meningitis, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • bacterial arachnoiditis
  • bacterial leptomeningitis
  • bacterial meningitis
  • bacterial pachymeningitis

Type 1 Excludes

  • bacterial meningoencephalitis G04.2
  • bacterial meningomyelitis G04.2

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.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G00Overview

Is G00 (Bacterial meningitis, not elsewhere classified) a billable code?

No. This is a category header that groups the codes for bacterial meningitis, not elsewhere classified, and headers cannot be submitted on claims. Claims for bacterial meningitis, not elsewhere classified need a more specific code from this category, such as G00.0, G00.1, and G00.2.