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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Diseases Of The Ear And Mastoid Process 380-389 > Nonsuppurative Otitis Media And Eustachian Tube Disorders 381.* > 2007 ICD-9-CM Diagnosis 381.0 Acute nonsuppurative otitis media  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 Therefore, this code may be out of date.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 381.0 can be accessed here. 381.0 is a non-specific code that cannot be used to specify a diagnosis View the ICD-9-CM Volume 1 381.* hierarchy 381.0 also known as: Acute tubotympanic catarrh Otitis media, acute or subacute: catarrhal exudative transudative with effusion 381.0 excludes: otitic barotrauma (993.0)