haau3 FHIR Implementation Guide (HFIG)
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haau3 FHIR Implementation Guide (HFIG) - Local Development build (v1.0.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

CodeSystem: MedList Evidence

Official URL: https://haau3.com/fhir/CodeSystem/medlist-evidence Version: 1.0.0
Active as of 2026-09-25 Computable Name: MedlistEvidenceCS

Signals haau3 records on a reconciled medication entry to say why the entry has its status and how its medication was coded. Each code names what was found in the patient's records and what it means for the entry. An entry carries every code that applies.

This Code system is referenced in the content logical definition of the following value sets:

Properties

This code system defines the following properties for its concepts

NameCodeTypeDescription
topic topic string What the code is about: status (why the entry has its status) or medication (how the entry's medication was coded).

Concepts

This case-sensitive code system https://haau3.com/fhir/CodeSystem/medlist-evidence defines the following codes:

CodeDisplayDefinitiontopic
recent-dispense Recent dispense A dispense of this medication was recorded recently enough to count it as current. status
active-order Active order An order for this medication is active and was written recently enough to count it as current. status
undated-order Undated active order An order for this medication is active but carries no date, so its recency could not be judged. The entry counts as current on the order's status alone. status
patient-reported Patient-reported use Use of this medication was reported by the patient or by someone acting for them, such as a family member, recently enough to count it as current. status
reported-use Reported use from a source of record Use of this medication was reported by a source of record, such as a clinic, a pharmacy or a health plan, recently enough to count it as current. status
undated-report Undated report of use A source states that this medication is in use but carries no date, so its recency could not be judged. The entry counts as current on the statement's status alone. status
course-completed Course completed A source states that this medication's course is complete: a completed status, or an end date that has passed. status
prescription-expired Prescription expired The only support for this medication is an order old enough that it no longer counts as current, with no dispense to corroborate it. status
order-stopped Order stopped An order or statement for this medication was stopped by its source. status
order-cancelled Order cancelled An order for this medication was cancelled by its source. status
order-on-hold Order on hold An order or statement for this medication is on hold at its source. status
patient-not-taking Patient not taking A source states that the patient is not taking this medication. status
intended Intended, not started A source states that this medication is intended and has not been started. status
conflicting-sources Conflicting sources The source records disagree about this medication's status. The entry carries the status haau3 concluded, and the other signals are listed beside this code. status
stale-data Stale data Every record of this medication is too old to support a conclusion about its current status. status
insufficient-signal Insufficient signal The records carry nothing that supports a conclusion about this medication's current status. status
rxnorm-not-held RxNorm code not in the held release The medication's RxNorm code is absent from the RxNorm release this list was built against, so it was kept as stated and not resolved to a clinical drug. medication
rxnorm-not-clinical-drug RxNorm code is not a clinical drug The medication's RxNorm code names an ingredient, a brand name or another level that does not resolve to one clinical drug, so no clinical-drug coding was added. The entry was matched on the code as stated. medication
brand-folded Brand folded to generic A branded source record was folded into this entry's generic clinical drug. The branded coding is kept on the entry beside the generic one, so the brand a source named is not lost. medication
brand-required Brand required A source order says the branded product must be dispensed as written, and the records do not show whether the brand or its generic is the one in use, so the brand and the generic are listed as their own entries. Each carries this code. medication
no-rxnorm No RxNorm code No source record for this medication carries an RxNorm code, so no clinical-drug coding was added. medication