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

## ValueSet: Non-Negative Observation Status

Official URL: http://fhir.org/guides/onc/us-quality-core/ValueSet/us-quality-core-non-negative-observation-status | Version: 0.5.0
Active as of 2026-05-15 | Computable Name: NonNegativeObservationStatus

This value set defines the set of codes that indicate a non-negated observation status (i.e. codes that are not `cancelled`)

This value set was defined to support the set of observation statuses in FHIR that do not explicitly indicate a negative status (i.e. all the codes from the http://hl7.org/fhir/observation-status code system that are not `cancelled`).

References

- US Quality Core NonPatient Observation
- US Quality Core Observation Clinical Result
- US Quality Core Laboratory Result Observation
- US Quality Core Observation Screening Assessment
- US Quality Core Simple Observation

### Logical Definition (CLD)

- Include these codes as defined in `http://hl7.org/fhir/observation-status` version 📦4.0.1

  Code | Display | Definition
  registered | Registered | The existence of the observation is registered, but there is no result yet available.
  preliminary | Preliminary | This is an initial or interim observation: data may be incomplete or unverified.
  final | Final | The observation is complete and there are no further actions needed. Additional information such "released", "signed", etc would be represented using [Provenance](provenance.html) which provides not only the act but also the actors and dates and other related data. These act states would be associated with an observation status of `preliminary` until they are all completed and then a status of `final` would be applied.
  amended | Amended | Subsequent to being Final, the observation has been modified subsequent. This includes updates/new information and corrections.
  corrected | Corrected | Subsequent to being Final, the observation has been modified to correct an error in the test result.
  entered-in-error | Entered in Error | The observation has been withdrawn following previous final release. This electronic record should never have existed, though it is possible that real-world decisions were based on it. (If real-world activity has occurred, the status should be "cancelled" rather than "entered-in-error".).
  unknown | Unknown | The authoring/source system does not know which of the status values currently applies for this observation. Note: This concept is not to be used for "other" - one of the listed statuses is presumed to apply, but the authoring/source system does not know which.

### Expansion

Expansion performed internally based on codesystem ObservationStatus v4.0.1 (CodeSystem)

This value set contains 7 concepts

System | Code | Display (en) | Definition | JSON | XML
`http://hl7.org/fhir/observation-status` | registered | Registered | The existence of the observation is registered, but there is no result yet available. |  |
`http://hl7.org/fhir/observation-status` | preliminary | Preliminary | This is an initial or interim observation: data may be incomplete or unverified. |  |
`http://hl7.org/fhir/observation-status` | final | Final | The observation is complete and there are no further actions needed. Additional information such "released", "signed", etc would be represented using Provenance which provides not only the act but also the actors and dates and other related data. These act states would be associated with an observation status of `preliminary` until they are all completed and then a status of `final` would be applied. |  |
`http://hl7.org/fhir/observation-status` | amended | Amended | Subsequent to being Final, the observation has been modified subsequent. This includes updates/new information and corrections. |  |
`http://hl7.org/fhir/observation-status` | corrected | Corrected | Subsequent to being Final, the observation has been modified to correct an error in the test result. |  |
`http://hl7.org/fhir/observation-status` | entered-in-error | Entered in Error | The observation has been withdrawn following previous final release. This electronic record should never have existed, though it is possible that real-world decisions were based on it. (If real-world activity has occurred, the status should be "cancelled" rather than "entered-in-error".). |  |
`http://hl7.org/fhir/observation-status` | unknown | Unknown | The authoring/source system does not know which of the status values currently applies for this observation. Note: This concept is not to be used for "other" - one of the listed statuses is presumed to apply, but the authoring/source system does not know which. |  |

Explanation of the columns that may appear on this page:

Level | A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes are under other codes, and imply that the code they are under also applies
System | The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code | The code (used as the code in the resource instance)
Display | The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
Definition | An explanation of the meaning of the concept
Comments | Additional notes about how to use the code