Patient Acc No

Field Length: 10

A unique accession number is assigned to each patient for each reporting institution affiliated with the patient. The accession number identifies the patient even if multiple primaries exist. The first four digits of the accession number specify the year in which the patient was first seen at the reporting institution for the diagnosis and/or treatment of cancer. The last six numbers are the numerical order the reporting institution entered their first reportable case of this patient into the registry's database.

The computer calculates these fields by copying in the accession number of the first abstracted case entered by each reporting institution for this patient.

In a single facility database there is only one reporting institution and therefore only one patient accession number for each patient. In a multi-facility database, the patient accession number displayed in the case will be the one associated with the facility in the Class Hospital Id field.