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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Diseases Of Oral Cavity, Salivary Glands, And Jaws 520-529 > Dentofacial Anomalies Including Malocclusion 524.* > 2007 ICD-9-CM Diagnosis 524.0 Major anomalies of jaw size  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 Therefore, this code may be out of date.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 524.0 can be accessed here. 524.0 is a non-specific code that cannot be used to specify a diagnosis View the ICD-9-CM Volume 1 524.* hierarchy 524.0 excludes: hemifacial atrophy or hypertrophy (754.0) unilateral condylar hyperplasia or hypoplasia of mandible