What is the ICD-10 code for Bacterial meningitis, not elsewhere classified?

The ICD-10-CM code for Bacterial meningitis, not elsewhere classified is G00 (fiscal year 2026). G00 is a non-billable category code — a more specific code such as G00.0 is required for claims.

What does ICD-10 code G00 mean?

G00 is the ICD-10-CM diagnosis code for Bacterial meningitis, not elsewhere classified. Bacterial meningitis, not elsewhere classified

Is G00 a billable ICD-10 code?

No, G00 is not a billable code. You may need to select a more specific code from this category.

What chapter is G00 in?

G00 is classified under Chapter 6: Diseases of the nervous system (G00-G99), Section G00-G09: Inflammatory diseases of the central nervous system (G00-G09).

What are the includes and excludes for G00?

Excludes1 (not coded here): bacterial meningoencephalitis (G04.2); bacterial meningomyelitis (G04.2). Includes: bacterial arachnoiditis; bacterial leptomeningitis; bacterial meningitis.

What more specific codes exist under G00?

More specific codes under G00 include: G00.0, G00.1, G00.2, G00.3, G00.8. Select the most specific code that matches the clinical documentation.

G00 Bacterial meningitis, not elsewhere classified

⚠ Non-Billable ICD-10-CM 2026

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The ICD-10-CM code for Bacterial meningitis, not elsewhere classified is G00 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter: 6: Diseases of the nervous system (G00-G99)
Section: G00-G09: Inflammatory diseases of the central nervous system (G00-G09)
Category G00: 7 codes (6 billable)
FY2026 Status: Stable since FY2024

Includes

bacterial arachnoiditis
bacterial leptomeningitis
bacterial meningitis
bacterial pachymeningitis

Excludes1

Not coded here. These conditions should NOT be coded together with G00.

bacterial meningoencephalitis (G04.2)
bacterial meningomyelitis (G04.2)

Official Coding Guidelines

Chapter 6 TOC entry

6. Chapter 6: Diseases of the Nervous System (G00-G99) ........................................................ 45

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.6

Dominant/nondominant side (TOC entry)

a. Dominant/nondominant side ................................................................................................. 45

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.6.a

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

G00 Bacterial meningitis, not elsewhere classified

Classification

Official Coding Guidelines

References

Related Codes

More Specific Codes

Related Codes in G00

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