2024 ICD-10-CM Diagnosis Code G00.9

Bacterial meningitis, unspecified

G00.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2024 edition of ICD-10-CM G00.9 became effective on October 1, 2023.
This is the American ICD-10-CM version of G00.9 – other international versions of ICD-10 G00.9 may differ.

Applicable To

The following code(s) above G00.9 contain annotation back-references

that may be applicable to G00.9:

Approximate Synonyms

Clinical Information

Bacterial infections of the leptomeninges and subarachnoid space, frequently involving the cerebral cortex, cranial nerves, cerebral blood vessels, spinal cord and nerve roots; causative organism varies with age and clinical status (eg, postoperative, immunodeficient, posttraumatic states); clinical manifestations include the acute onset of fever, stiff neck, altered mentation, seizures, and focal neurologic deficits; death may occur within 24 hours of disease onset; pathologic features include a purulent exudate in the subarachnoid space, and diffuse inflammation of neural and vascular structures.
Bacterial infections of the leptomeninges and subarachnoid space, frequently involving the cerebral cortex, cranial nerves, cerebral blood vessels, spinal cord, and nerve roots.

ICD-10-CM G00.9 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

023 Craniotomy with major device implant or acute complex cns principal diagnosis with mcc or chemotherapy implant or epilepsy with neurostimulator
024 Craniotomy with major device implant or acute complex cns principal diagnosis without mcc
094 Bacterial and tuberculous infections of nervous system with mcc
095 Bacterial and tuberculous infections of nervous system with cc
096 Bacterial and tuberculous infections of nervous system without cc/mcc
791 Prematurity with major problems
793 Full term neonate with major problems

Convert G00.9 to ICD-9-CMCode History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change
2024 (effective 10/1/2023): No change

Diagnosis Index entries containing back-references to G00.9: