Specific code 2014 ICD-9-CM Diagnosis Code 320.9
Meningitis due to unspecified bacterium
  • Billable Code
  • Short description: Bacterial meningitis NOS.
  • ICD-9-CM 320.9 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 320.9 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • Bacterial meningitis
  • Meningitis, bacterial
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.
Applies To
  • Meningitis:
    • bacterial NOS
    • purulent NOS
    • pyogenic NOS
    • suppurative NOS
Convert to ICD-10-CM: 320.9 converts approximately to:
  • 2014 ICD-10-CM G00.9 Bacterial meningitis, unspecified
    Or:
  • 2014 ICD-10-CM G04.2 Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
ICD-9-CM Volume 2 Index entries containing back-references to 320.9:
  • Abscess (acute) (chronic) (infectional) (lymphangitic) (metastatic) (multiple) (pyogenic) (septic) (with lymphangitis) (see also Cellulitis) 682.9
    • meninges (see also Meningitis) 320.9
  • Infection, infected, infective (opportunistic) 136.9
    • brain (see also Encephalitis) 323.9
      • late effect - see category 326
      • membranes - (see also Meningitis) 322.9
      • septic 324.0
        • late effect - see category 326
        • meninges (see also Meningitis) 320.9
    • meninges (see also Meningitis) 320.9
  • Meningitis (basal) (basic) (basilar) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetica) (toxic) 322.9
    • fibrinopurulent NEC 320.9
    • gram-positive cocci NEC 320.9
    • infectious NEC 320.9
    • purulent NEC 320.9
    • pyogenic NEC 320.9
    • septic NEC 320.9
    • suppurative 320.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 320.9 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.