A plethora of studies have validated individual malig- nancy diagnoses in the Danish National Patient Register using medical records or clinical databases such as cancer registries as the gold standard:19 high PPVs were generally reported (>70%, except for bone metastasis among prostate cancer ...
Any mention of extension, invasion, or metastasis to another site is coded as a secondary malignant neoplasm to that site. The secondary site may be the principal or first-listed with the V10 code used as a secondary code. e. Admissions/Encounters involving chemotherapy, immunotherapy and ...