old pacemaker at the end of life and replacement of pulse generator

After local anesthetic had been infiltrated, an incision was made over the right upper chest where the pacemaker had been implanted. The old pulse generator was removed. The new pulse generator, a Guidant Discovery DR model #1275, serial #abcdefg was implanted. The atrium sensing was 2 mV, threshold 1.4 V, impedance 500 MHz. In the ventricle our sensing was 7 mV, threshold 1.4 V, and impedance 5600 MHz. There was no VA conduction. The new pulse generator was attached to the old leads. Left and DDD are more lower rate 75, upper rate 120 beats per minute. “AV delay” 150 ms and mode switching as on. The wound was closed in layers

what is the CPT® code?

re: old pacemaker at the end of life and replacement of pulse generator

33228??

re: old pacemaker at the end of life and replacement of pulse generator

What is the code for 2014 CPT® code.
Shana