Bacterial meningitis, not elsewhere classified (G00) ICD-10-CM
The G00 code range covers bacterial meningitis, not elsewhere classified with 7 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- bacterial arachnoiditis
- bacterial leptomeningitis
- bacterial meningitis
- bacterial pachymeningitis
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the G00 Range 7 codes · 6 billable
About the G00 Code Range
ICD-10 code section G00 covers various types of bacterial meningitis that are not classified under other specific categories. These codes are used to accurately identify and document bacterial infections causing inflammation of the membranes around the brain and spinal cord.
This section includes precise codes for infections caused by different bacteria: G00.0 specifies Haemophilus meningitis (also known as Haemophilus influenzae meningitis or infection of the central nervous system by Haemophilus), G00.1 is for pneumococcal meningitis (caused by Streptococcus pneumoniae), G00.2 covers streptococcal meningitis including infections from various Streptococcus species, and G00.3 identifies staphylococcal meningitis, including infections by Staphylococcus aureus and coagulase-negative staphylococci. The G00.8 code is reserved for other bacterial meningitis caused by less common bacteria such as Klebsiella, Pseudomonas, or Escherichia coli. When the specific bacteria is unknown, G00.9 is used to indicate bacterial meningitis, unspecified.
Medical coders rely on these codes to capture the exact bacterial cause of meningitis, aiding in clinical documentation and appropriate treatment tracking. Understanding the synonyms like “acute purulent meningitis” or “infective meningitis” helps link clinical terms with the ICD-10 coding system efficiently. The ICD-10 code for bacterial meningitis assists healthcare professionals in distinguishing between different bacterial pathogens responsible for central nervous system infections.
Questions About This Page
How many billable codes are in the G00 range?
Of the 7 codes in this range, 6 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the G00 range classify?
The range classifies bacterial meningitis, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
