2007 ICD-9-CM Procedure 35.5 Repair of atrial and ventricular septa with prosthesis 35.5 is a non-specific code that should not be used to specify a procedure View the full Volume 3 35.* hierarchy Code also cardiopulmonary bypass [extracorporeal circulation] [heart-lung machine] (39.61) 35.5 includes: repair of septa with synthetic implant or patch