2008 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.* > 2008 ICD-9-CM Diagnosis 524.26 Excessive horizontal overlap  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 Therefore, this code may be out of date.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 524.26 can be accessed here. 524.26 is a specific code that can be used to specify a diagnosis 524.26 contains 5 index entries View the ICD-9-CM Volume 1 524.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 524.26 also known as: Excessive horizontal overjet Index entries containing 524.26: Anomaly, anomalous (congenital) (unspecified type) 759.9 dental arch relationship 524.20 excessive horizontal overlap 524.26 Excess, excessive, excessively horizontal overjet 524.26 overlap 524.26 Overjet 524.29 excessive horizontal 524.26 Overlap excessive horizontal 524.26