haau3 FHIR Implementation Guide (HFIG)
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CodeSystem: MedList Evidence

Official URL: https://haau3.com/fhir/CodeSystem/medlist-evidence Version: 1.0.0
Active as of 2026-11-12 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
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
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 whether this medication is in use, and their dates do not settle it. The entry carries the status haau3 concluded. status
insufficient-signal Insufficient signal The records carry nothing that supports a conclusion about this medication's current status. status
generic-dispensed Generic dispensed for a brand-only order A source order says the branded product must be dispensed as written, and a source shows its generic was dispensed. The entry names the medication as it was dispensed, and carries the order's instruction that substitution is not allowed. medication
generic-dispensed-undated Generic dispensed, date unknown A source order says the branded product must be dispensed as written, and a source shows its generic was dispensed at a time the records do not give, without naming the order it filled. The entry names the medication as ordered, and carries the order's instruction that substitution is not allowed. medication