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2008 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.* > 2008 ICD-9-CM Diagnosis 381.61 Osseous obstruction of eustachian tube  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 Therefore, this code may be out of date.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 381.61 can be accessed here. 381.61 is a specific code that can be used to specify a diagnosis 381.61 contains 4 index entries View the ICD-9-CM Volume 1 381.* hierarchy 381.61 also known as: Obstruction of Eustachian tube from cholesteatoma, polyp, or other osseous lesion Index entries containing 381.61: Obstruction, obstructed, obstructive Eustachian tube (complete) (partial) 381.60 due to cholesteatoma 381.61 osseous lesion NEC 381.61 polyp 381.61 osseous 381.61