Use the first date of diagnosis whether clinically or histologically confirmed. If the physician states that in retrospect the patient had cancer at an earlier date, then use the earlier date as the date of diagnosis.
Use the date therapy was started as the date of diagnosis if the patient receives a first course of treatment before a definitive diagnosis.
Refer to the list of "Ambiguous Terms" in Section One of Facility Oncology Registry Data Standards (FORDS) for language that represents a diagnosis of cancer.
Cancer registries record the full date of initial diagnosis, only the year portion of the reported date is provided in the PUF.
Cases with unknown year of diagnosis are not submitted to NCDB.
|CCYY||Four digit year|
|9999||Year of diagnosis unknown (excluded from the PUF)|