Definition and Stratification of Patients with Cardiac Devices Based on ICD-9-CM Procedure Codes

Patient Group	Definition based on recorded cardiac device procedure codes
New CRT-P	00.50
New CTR-D	00.51
New AICD	37.94 or (37.95+37.96)
New pacemaker	[37.70 or 37.71 or 37.72 or 37.73] + [37.80 or 37.81 or 37.82 or 37.83]
Other (revision; replacement; correction of lead, generator, or upgrade).	Other procedure codes or combination of procedure codes for cardiac device implantation

Cardiac device-related ICD-9-CM procedure codes:

00.50 Implantation of cardiac resynchronization pacemaker without mention of defibrillation, total system

00.51 Implantation of cardiac resynchronization defibrillator, total system

00.52 Implantation or replacement of transvenous lead into left ventricular coronary venous system

00.53 Implantation or replacement of cardiac resynchronization pacemaker, pulse generator only

00.54 Implantation or replacement of cardiac resynchronization defibrillator, pulse generator only

37.70 Initial insertion of lead, not otherwise specified

37.71 Initial insertion of transvenous lead into ventricle

37.72 Initial insertion of transvenous leads into atrium and ventricle

37.73 Initial insertion of transvenous lead into atrium

37.75 Revision of lead

37.76 Replacement of transvenous atrial and/or ventricular lead(s)

37.77 Removal of lead(s) without replacement

37.79 Revision or relocation of cardiac device pocket

37.80 Insertion of permanent pacemaker, initial or replacement, type of device not specified

37.81 Initial insertion of single-chamber device, not specified as rate responsive

37.82 Initial insertion of single-chamber device, rate responsive

37.83 Initial insertion of dual-chamber device

37.85 Replacement of pacemaker device with single-chamber device, not specified as rate responsive

37.86 Replacement of pacemaker device with single-chamber device, rate responsive

37.87 Replacement of pacemaker device with dual-chamber device

37.89 Revision or removal of pacemaker device

37.94 Implantation or replacement of automatic cardioverter-defibrillator, total system (AICD)

37.95 Implantation of automatic cardioverter-defibrillator lead(s) only

37.96 Implantation of automatic cardioverter-defibrillator pulse generator only

37.97 Replacement of automatic cardioverter-defibrillator lead(s) only

37.98 Replacement of automatic cardioverter-defibrillator pulse generator only

37.99 Removal of cardioverter/defibrillator pulse generator only without replacement; removal without replacement of cardiac resynchronization defibrillator device; repositioning of lead(s) (sensing) (pacing) (electrode); repositioning of pulse generator; revision of cardioverter/defibrillator (automatic) pocket; revision or relocation of CRT-D pocket