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Drug Formulary

Datasets

Built to Da Vinci PDex US Drug Formulary STU 2.1.0. A formulary is the list of drugs a plan pays for, with the tier, cost sharing and coverage rules for each. The IG splits it into four resources, and the feed has one dataset per resource.

DatasetUS Drug Formulary STU 2.1.0 target profile
payer_plansPayer Insurance Plan (InsurancePlan), with its coverage area as Insurance Plan Location
formulariesFormulary (InsurancePlan)
formulary_drugsFormulary Drug (MedicationKnowledge)
formulary_itemsFormulary Item (Basic)

The four fit together this way. A payer plan states its drug benefit as a cost-sharing table, one cell per pharmacy benefit type and drug tier, and points at the formulary it uses. A formulary is a named list for a plan year. A formulary drug is one prescribable product, identified by RxNorm. A formulary item is the row of the list: this drug, on this formulary, in this tier, with these requirements.

Data conventions

RuleDetail
ScopeMedicare Advantage lines with Part D drug coverage. Covered drugs only: a drug that is not on the formulary is absent, not listed as excluded.
DeliveryFull snapshot each extract, not deltas. A drug removed during the plan year stays in the snapshot as retired with an availability_end until the plan year ends, so a member can still see it was covered; a plan or formulary that ended is likewise retired. Rows absent from a snapshot are removed.
Keysplan_id, formulary_id and drug_id are your identifiers and stay stable across snapshots. A plan that also appears in the Provider Directory uses the same plan_id there, and *_org_npi and network_ids are keys into that feed's organizations and networks.
CodesSend the code, not the description. Drugs are RxNorm; Payerbox derives every display from its terminology service.
Multiple values;-separated, positionally aligned across companion columns.
AmountsCopays are decimal US dollars; coinsurance is a percentage, 0 to 100, no % sign.
DatesYYYY-MM-DD.
Not PHIA formulary is public information and is also served unauthenticated. It carries no member data.

These resources are served by Patient Access.

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