What are the CPT codes that require prior authorization under the Horizon Cardiology Program?
Nuclear stress testing: 78460, 78461, 78464, 78465 Cardiac CT: 0145T, 0146T, 0148T, 0150T Cardiac PET: 78459, 78491, 78492 Cardiac MRI: 75557, 75558, 75559, 75560, 75561, 75562, 75563, 75564 Stress echo: 93350, 93351 Diagnostic left heart catheterization: 93510, 93511 Transthoracic echocardiography*: 93303, 93304, 93306, 93307, 93308 *effective July 1, 2009