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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 > Other Disorders Of Middle Ear And Mastoid 385.* > 2007 ICD-9-CM Diagnosis 385.31 Cholesteatoma of attic  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 Therefore, this code may be out of date.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 385.31 can be accessed here. 385.31 is a specific code that can be used to specify a diagnosis 385.31 contains 2 index entries View the ICD-9-CM Volume 1 385.* hierarchy Index entries containing 385.31: Cholesteatoma (ear) 385.30 attic (primary) 385.31 primary 385.31