For institutional claims the Admission date and time qualifier (DT) and value must be used on all Inpatient claims. For an outpatient claim the Admission Date only (D8) qualifier and value will be accepted.
The most significant change in the 837 Institutional Errata versions was that Admission Type code became required on all claims. The value is to be reported in the 2300 CL1 segment on every claim.
No. POA values have their respective places in the 5010 837 Institutional transaction on the diagnosis segments. Refer to the implementation guide for how to submit those values. The K3 segment no longer should carry those values.