G00.9
Billable codeBacterial meningitis, unspecified
The ICD-10 code for bacterial meningitis, unspecified is G00.9.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Meningitis due to gram-negative bacteria, unspecified
- Purulent meningitis NOS
- Pyogenic meningitis NOS
- Suppurative meningitis NOS
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- G00.0Hemophilus meningitis
- G00.1Pneumococcal meningitis
- G00.2Streptococcal meningitis
- G00.3Staphylococcal meningitis
- G00.8Other bacterial meningitis
- G00.9Bacterial meningitis, unspecified
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 32082Approximate match
- 3209Approximate match
Associated MS-DRGs
G00.9 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.
- DRG 023Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator
- DRG 024Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC
- DRG 094Bacterial and Tuberculous Infections of Nervous System with MCC
- DRG 095Bacterial and Tuberculous Infections of Nervous System with CC
- DRG 096Bacterial and Tuberculous Infections of Nervous System without CC/MCC