Da Vinci Prior Authorization Support (PAS) FHIR IG
2.2.0-ballot - STU 2.2 - Ballot

Da Vinci Prior Authorization Support (PAS) FHIR IG, published by HL7 International / Financial Management. This guide is not an authorized publication; it is the continuous build for version 2.2.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/davinci-pas/ and changes regularly. See the Directory of published versions

## CodeSystem: PAS Temporary Codes

Official URL: http://hl7.org/fhir/us/davinci-pas/CodeSystem/PASTempCodes | Version: 2.2.0-ballot
Standards status: Trial-use Draft as of 2026-01-30 | Maturity Level: 3 | Computable Name: PASTempCodes
Other Identifiers: OID:2.16.840.1.113883.4.642.40.24.16.1

Codes temporarily defined as part of the PAS implementation guide. These will eventually migrate into an officially maintained terminology (likely either SNOMED CT or HL7's UTG code systems).

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

- MetricDataSource
- PASCommunicationRequestMedium
- PASInformationChangeMode
- PASSupportingInfoType
- PASTaskCodes
- X12278DiagnosisType

This case-sensitive code system `http://hl7.org/fhir/us/davinci-pas/CodeSystem/PASTempCodes` defines the following codes in a Is-A hierarchy:

Code | Display | Definition
provider-src | Provider-sourced | The metric information was captured from the provider system's perspective
payer-src | Payer-sourced | The metric information was captured from the payer system's perspective
intermediary-src | Intermediary-sourced | The metric information was captured from the intermediary system's perspective
changed | Changed | Previously sent information has been changed.
added | Added | New information that was not sent previously.
patientEvent | Patient Event | Information about the dates of the event that are being requested.
admissionDates | Admission Dates | Information about the admission dates of a hospital admission being requested.
dischargeDates | Discharge Dates | Information about discharge dates of a hospital admission being requested.
additionalInformation | Additional Information | Send additional paperwork or supporting information for the request.
freeFormMessage | Free Form Message | Send text messages to the UMO.
institutionalEncounter | Institutional Encounter | Information about a hospital claim being requested.
result-available | Result Available | A new result for a PAS submission is now available.
admitting | Admitting | The diagnosis given as the reason why the patient was admitted to the hospital.
principal | Principal | The single medical diagnosis that is most relevant to the patient's chief complaint or need for treatment.
patientreasonforvisit | Patient Reason For Visit | The diagnosis given as why the patient came to the hospital.
CDEX | CDex Submit-Attachment | Via a CDex Submitt-Attachment operation
attachment-request-code | Attach Request Code | Attachments are identified by LOINC or PWK01 codes
attachment-request-questionnaire | Attachment Request Questionnaire | Attachments are identified by a questionnaire
priorAuthorization | Prior Authorization Information Request | Additional information is needed to determine response for a prior authorization
payer-url | Payer URL | The Payer Endpoint URL needed to submit attachments
attachments-needed | Attachments Needed | Communicates what attachments are needed
questionnaire-context | Questionnaire Context | Communicates the context of questionnaires that are needed

Description of the above table(s).