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 320-327 > Bacterial Meningitis 320.* > 2008 ICD-9-CM Diagnosis 320.0 Hemophilus meningitis  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 Therefore, this code may be out of date.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 320.0 can be accessed here. BACTERIAL INFECTIONS of the nervous system caused by HAEMOPHILUS organisms, and marked by prominent inflammation of the meninges. HAEMOPHILUS INFLUENZAE TYPE B is the most common causative organism. The condition primarily affects children under 6 years of age but may occur in adults. Clinical manifestations include fever; nuchal rigidity; PHOTOPHOBIA; SEIZURES; HEARING LOSS; SENSORINEURONAL; COMA; and cerebrovascular thrombosis. The organism tends to enter the central nervous system following infections of adjacent structures, including the middle ear (see also OTITIS MEDIA), sinuses, and pharynx. (From Menkes, Textbook of Child Neurology, 5th ed, pp396-7) 320.0 is a specific code that can be used to specify a diagnosis 320.0 contains 11 index entries View the ICD-9-CM Volume 1 320.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 320.0 also known as: Meningitis due to Hemophilus influenzae [H. influenzae] Index entries containing 320.0: Hemophilus influenzae NEC 041.5 arachnoiditis (basic) (brain) (spinal) 320.0 late effect - see category 326 cerebral ventriculitis 320.0 late effect - see category 326 cerebrospinal inflammation 320.0 late effect - see category 326 leptomeningitis 320.0 late effect - see category 326 meningitis (cerebral) (cerebrospinal) (spinal) 320.0 late effect - see category 326 meningomyelitis 320.0 late effect - see category 326 pachymeningitis (adhesive) (fibrous) (hemorrhagic) (hypertrophic) (spinal) 320.0 late effect - see category 326 Meningitis (basal) (basic) (basilar) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetica) (toxic) 322.9 H. influenzae 320.0 influenzal 320.0 Meningoencephalitis (see also Encephalitis) 323.9 H. influenzae 320.0 influenzal 320.0