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2007 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 > Meningitis Due To Other Organisms 321.* > 2007 ICD-9-CM Diagnosis 321.2 Meningitis due to viruses not elsewhere classified  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 Therefore, this code may be out of date.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 321.2 can be accessed here. 321.2 is a specific code that can be used to specify a diagnosis 321.2 contains 5 index entries View the ICD-9-CM Volume 1 321.* hierarchy Code first underlying disease, as: meningitis due to arbovirus (060.0-066.9) 321.2 excludes: meningitis (due to): abacterial (047.0-047.9) adenovirus (049.1) aseptic NOS (047.9) Coxsackie (virus) (047.0) ECHO virus (047.1) enterovirus (047.0-047.9) herpes simplex virus (054.72) herpes zoster virus (053.0) lymphocytic choriomeningitis virus (049.0) mumps (072.1) viral NOS (047.9) meningo-eruptive syndrome (047.1) Index entries containing 321.2: Meningitis (basal) (basic) (basilar) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetica) (toxic) 322.9 arbovirus NEC 066.9 [321.2] specified type NEC 066.8 [321.2] aseptic (acute) NEC 047.9 due to poliovirus (see also Poliomyelitis) 045.2 [321.2] due to poliovirus (see also Poliomyelitis) 045.2 [321.2] poliovirus (see also Poliomyelitis) 045.2 [321.2]