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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 > Disorders Of External Ear 380.* > 2008 ICD-9-CM Diagnosis 380.50 Acquired stenosis of external ear canal unspecified as to cause  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 Therefore, this code may be out of date.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 380.50 can be accessed here. 380.50 is a specific code that can be used to specify a diagnosis 380.50 contains 11 index entries View the ICD-9-CM Volume 1 380.* hierarchy Index entries containing 380.50: Collapse 780.2 external ear canal 380.50 secondary to inflammation 380.53 surgery 380.52 trauma 380.51 Constriction canal, ear (see also Stricture, ear canal, acquired) 380.50 Deformity 738.9 auditory canal (congenital) (external) (see also Deformity, ear) 744.3 acquired 380.50 Narrowing auditory canal (external) (see also Stricture, ear canal, acquired) 380.50 Obstruction, obstructed, obstructive canal, ear (see also Stricture, ear canal, acquired) 380.50 Stenosis (cicatricial) - see also Stricture external ear canal 380.50 secondary to inflammation 380.53 surgery 380.52 trauma 380.51 Stricture (see also Stenosis) 799.89 auditory canal (congenital) (external) 744.02 acquired (see also Stricture, ear canal, acquired) 380.50 ear canal (external) (congenital) 744.02 acquired 380.50 secondary to inflammation 380.53 surgery 380.52 trauma 380.51 meatus ear (congenital) 744.02 acquired (see also Stricture, ear canal, acquired) 380.50 osseous (congenital) (ear) 744.03 acquired (see also Stricture, ear canal, acquired) 380.50 osseous meatus (congenital) (ear) 744.03 acquired (see also Stricture, ear canal, acquired) 380.50