2026 US Quality Core Implementation Guide
0.5.0 - cibuild US

2026 US Quality Core Implementation Guide, published by Office of the National Coordinator for Health Information Technology (ONC). This guide is not an authorized publication; it is the continuous build for version 0.5.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/FHIR/us-quality-core/ and changes regularly. See the Directory of published versions

## SearchParameter: UsQualityCoreConditionOnsetDate

Official URL: http://fhir.org/guides/onc/us-quality-core/SearchParameter/us-quality-core-condition-onset-date | Version: 0.5.0
Active as of 2026-05-15 | Computable Name: UsQualityCoreConditionOnsetDate

US Quality Core Condition onset-date Search Parameter

## UsQualityCoreConditionOnsetDate

Parameter `onset-date`:`date`

US Quality Core Condition onset-date Search Parameter

Resource | Condition
Expression | `Condition.onset.as(dateTime)|Condition.onset.as(Period)`
Processing Mode | Normal
Multiples | multipleAnd: The parameter may repeat in order to specify multiple values that must all be true multipleOr: The parameter may have multiple values (separated by comma) where at least one must be true
Comparators | Allowed: eq, ne, gt, ge, lt, le, sa, eb, ap