Get RxNorm members of an RxClass class — get_class

get_class_members() queries the RxClass API to identify members of a specific drug class. Typically, this would be used to identify all ingredient RxCUIs in a class, which can then be combined with other search functions to extract related product RxCUIs or NDCs.

Usage

get_class_members(
  class_id,
  rela_source,
  rela = NULL,
  include_indirect = TRUE,
  ttys = NULL
)

Arguments

class_id: RxClass class identifier.
rela_source: RxClass relationship source, such as "ATC", "ATCPROD", "DAILYMED", "FDASPL", "MEDRT", "SNOMEDCT", or "VA".
rela: Optional relationship filter.
include_indirect: Logical; if TRUE, include direct and indirect members. If FALSE, return direct members only.
ttys: Optional RxNorm term type filter, such as "IN", "PIN", "SCD", or "SBD".

Value

A tibble of RxNorm drug members.