2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Other Forms Of Heart Disease 420-429 > Ill-Defined Descriptions And Complications Of Heart Disease 429.* > 2008 ICD-9-CM Diagnosis 429.5 Rupture of chordae tendineae  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 Therefore, this code may be out of date.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 429.5 can be accessed here. 429.5 is a specific code that can be used to specify a diagnosis 429.5 contains 3 index entries View the ICD-9-CM Volume 1 429.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Index entries containing 429.5: Chordae tendineae rupture (chronic) 429.5 Laceration - see also Wound, open, by site chordae heart 429.5 Rupture, ruptured 553.9 chordae tendineae 429.5