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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 > Gingival And Periodontal Diseases 523.* > 2007 ICD-9-CM Diagnosis 523.01 Acute gingivitis, non-plaque induced  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 Therefore, this code may be out of date.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 523.01 can be accessed here. 523.01 is a specific code that can be used to specify a diagnosis 523.01 contains 1 index entry View the ICD-9-CM Volume 1 523.* hierarchy Index entries containing 523.01: Gingivitis 523.10 acute 523.00 non-plaque induced 523.01