APPENDIX.

	ICD-9 procedure codes	CPT codes
Coronary artery bypass surgery	36.10–36.17, 36.19	33510–35519, 33521–35523, 33533–35536
Other cardiac surgery	35.10–35.14, 35.20–35.28, 35.31–35.35, 35.39, 35.50–35.54, 35.60–35.63, 35.70–35.73, 35.81–35.84, 35.91–35.95, 35.98–35.99, 36.03, 37.31–37.33, 37.35	33030–33031, 33050, 33120, 33130, 33140,33250–33251, 33253, 33261, 33300, 33305, 33310, 33315, 33400–33401, 33403–33406, 33410–33417, 33420, 33422, 33425–33427, 33430, 33460, 33463–33465, 33468, 33470–33472, 33474–33476, 33478, 33496, 33500–33506, 33600, 33602, 33606, 33608, 33610–33612, 33615, 33617, 33619, 33641, 33645, 33647, 33660, 33665, 33670, 33681, 33684, 33688, 33690, 33692, 33694, 33697, 33702, 33710, 33720, 33722, 33732, 33735–33737, 33770–33771, 33774–33779, 33780–33781, 33786, 33788, 33935, 33945
Percutaneous coronary intervention	36.01–36.02, 36.05–36.07, 36.09, 00.66	92974, 92980–92982, 92984, 92995–92996
Diagnostic cardiac catheterization involving intravenous contrast	88.50–88.57	95908, 93539–93545