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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 > Meningitis Due To Other Organisms 321.* > 2008 ICD-9-CM Diagnosis 321.8 Meningitis due to other nonbacterial organisms classified elsewhere  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 Therefore, this code may be out of date.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 321.8 can be accessed here. 321.8 is a specific code that can be used to specify a diagnosis 321.8 contains 4 index entries View the ICD-9-CM Volume 1 321.* hierarchy Code first underlying disease 321.8 excludes: leptospiral meningitis (100.81) Index entries containing 321.8: Complications vaccination 999.9 meningitis 997.09 [321.8] Meningismus (infectional) (pneumococcal) 781.6 due to serum or vaccine 997.09 [321.8] Meningitis (basal) (basic) (basilar) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetica) (toxic) 322.9 due to nonbacterial organisms NEC 321.8 preventive immunization, inoculation, or vaccination 997.09 [321.8]