Patient Acc No (Class)

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.

A case in a multi-facility database may be associated with more than one facility, and this field exists in the class history record for each affiliated facility. When a facility owns the case, this field is automatically filled in with the value from Patient Accession Number (item 31721).