Temporary pacemaker (33210), then permanent

I have been told that a temporary pacemaker is not billable if a permanent pacemaker is implanted within 72 hours. Other than a thread here from 2010 I cannot find anything to indicate this is the case. On Dr. Z's website, someone asked about this a few months ago and he said there was no problem billing the temporary as long as it wasn't done on the same day.

Obviously, I am more inclined to believe Dr. Z than some unknown poster on an internet forum, but did this used to be the case? If so, when was it changed? More importantly, can someone provide a link to back up their assertions.

Thanks

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L. Mark Kozu, CPC, CPC-H

Temporary pacemaker (33210), then permanent