SMART Base
0.3.0 - ci-build

SMART Base, published by WHO. This guide is not an authorized publication; it is the continuous build for version 0.3.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/litlfred/smart-base/ and changes regularly. See the Directory of published versions

CodeSystem: Knowledge graph L1: predicates

Official URL: http://smart.who.int/base/CodeSystem/KGL1Predicates Version: 0.3.0
Active as of 2026-10-06 Computable Name: KGL1Predicates

The predicates of the L1 layer. An edge's predicate is one of these; which (source, target) pairs each licenses is the layer's edge table. Source: kg/src/L1.ts (migrated from smart-kg ontology/L1/L1.json).

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

This case-sensitive code system http://smart.who.int/base/CodeSystem/KGL1Predicates defines the following codes:

CodeDefinition
contains Structural containment. A publication contains sections; a section contains recommendations.
supersedes This publication replaces that one. Guideline updates are the reason impact analysis matters.
refines A recommendation narrows or conditions another, rather than replacing it.
hasPopulation PICO.
hasIntervention PICO.
hasComparator PICO.
hasOutcome PICO.
supportedBy Recommendation to its body of evidence, carrying GRADE certainty.
hasRemark Implementation consideration. Often the part a DAK author actually acts on.
recommends A recommendation is about a health intervention. The hinge to L2.
definedIn A schedule or indicator is normatively defined in a publication.
schedules A schedule entry prescribes when an intervention is delivered.
measures An indicator measures delivery of an intervention.
derivedFrom This normative content restates or operationalises that recommendation.
crossReferences Names an external code. THE ONLY edge into terminology: it records that a code was cited, never what the code means. See the terminology-code class.
classifiedAs Placement in a WHO classification — CDHI for interventions. Also a cross-reference, kept separate because classification is an assertion about the thing, not a mention of a code.
appearsIn A citation string appears in an L2 or L3 artefact at a stated location.
resolvesTo A citation string resolves to a publication or a recommendation. Almost always `inferred` or `decided`, never `derived` — matching a free-text citation is a judgement.
implementedBy L1 content is implemented by an L2 or L3 artefact, addressed by canonical URL. The graph does not model the target's structure.