2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Inflammatory Diseases Of The Central Nervous System 320-326 > Bacterial Meningitis 320.* >  2008 ICD-9-CM Diagnosis 320.9
Meningitis due to unspecified bacterium On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date.
The 2009 version of ICD-9-CM 320.9 can be accessed here. - Bacterial infections of the leptomeninges and subarachnoid space, frequently involving the cerebral cortex, cranial nerves, cerebral blood vessels, spinal cord, and nerve roots. The type of causative organism varies with age and clinical status (e.g., post-operative, immunodeficient, or post-traumatic 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. (From Joynt, Clinical Neurology, 1994, Ch24, pp1-5)
- 320.9 is a specific code that can be used to specify a diagnosis
- 320.9 contains 11 index entries
- View the ICD-9-CM Volume 1 320.* hierarchy
320.9 also known as:- Meningitis:
- bacterial NOS
- purulent NOS
- pyogenic NOS
- suppurative NOS
Index entries containing 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
- septic 324.0
- 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- bacterial NEC 320.9
- 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
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