. . "Substance_Use_End_Date"^^ . "Substance Use End DatePTNCI" . "C83140"^^ . "Temporal Concept"^^ . "Substance Use End Date"^^ . "The stop date of the substance usage.NCI" . . "Substance Use End Date"^^ . . "C2826748"^^ . "SUENDATPTCDISC" .