Date of initiation for hormone therapy that is part of the first course of treatment. See also RX Summ--Hormone [1400]. See Data Descriptor Table for date format.

Formerly RX Date--Hormone.

The dates on which different treatment modalities were started are used to evaluate whether the treatments were part of first-course therapy and to reconstruct the sequence of first-course treatment modes.

Note: CoC discontinued support of this item from 2003 through 2009.