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 > Diseases Of Hard Tissues Of Teeth 521.* > 2008 ICD-9-CM Diagnosis 521.41 Pathological resorption, internal  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 Therefore, this code may be out of date.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 521.41 can be accessed here. 521.41 is a specific code that can be used to specify a diagnosis 521.41 contains 3 index entries View the ICD-9-CM Volume 1 521.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Index entries containing 521.41: Pathologic, pathological - see also condition resorption, tooth 521.40 internal 521.41 Resorption dental (roots) 521.40 pathological internal 521.41 teeth (roots) 521.40 pathological internal 521.41