82270 vs 82272

We have researched when it is appropriate to bill these two codes. We have determined that:

88272 is billed when service is performed for reasons other than colorectal neoplasm screening, and 1 - 3 cards are used.

88270 is billed when performed as colorectal neoplasm screening, and when 3 cards have been completed.

So when billing 88270, V76.51 would be the appropriate dx. The issue we are having is with assigning a dx code for 88272. Obviously, if there was blood present on a rectal exam, or if the patient indicated he/she had rectal bleeding in the past, then 569.3 would be the appropriate dx. But what if there are no signs/symptoms and only 1 card is done. Since 88270 requires for 3 cards to screen for colon cancer, we cannot use this code. But if 1 card is done, as part of an annual wellness exam, would it be appropriate to bill 88272 with the dx of V70.0?

82270 vs 82272