HL7 v2.6 Vocabulary
0.2.0 - ci-build

HL7 v2.6 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.2.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/frankoemig/hl7.v2.terminology.v26/ and changes regularly. See the Directory of published versions

## ValueSet: What subject filter (2.6 - 1.5.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/ValueSet/hl7VSwhatSubjectFilter | Version: 1.5.0
Active as of 2026-03-13 | Computable Name: Hl7VSwhatSubjectFilter
Other Identifiers: OID:2.16.840.1.113883.21.23, urn:ietf:rfc:3986#Uniform Resource Identifier (URI)#http://terminology.hl7.org/v2plusvocab/ValueSet/v2-0048
Copyright/Legal: HL7 Inc., 2026

Value Set of codes which specify the kind of information that is required to satisfy a query request. The values define the type of transaction inquiry.

References

This value set is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)

### Logical Definition (CLD)

- Include all codes defined in `http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` version 📍1.5.0

### Expansion

Expansion performed internally based on codesystem What subject filter (2.6 - 1.5.0) v1.5.0 (CodeSystem)

This value set contains 37 concepts

System | Code | Display (en) | Definition | JSON | XML
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | ADV | Advice/diagnosis | Advice/diagnosis |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | ANU | Nursing unit lookup (returns patients in beds, excluding empty beds) | Nursing unit lookup (returns patients in beds, excluding empty beds) |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | APA | Account number query, return matching visit | Account number query, return matching visit |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | APM | Medical record number query, returns visits for a medical record number | Medical record number query, returns visits for a medical record number |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | APN | Patient name lookup | Patient name lookup |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | APP | Physician lookup | Physician lookup |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | ARN | Nursing unit lookup (returns patients in beds, including empty beds) | Nursing unit lookup (returns patients in beds, including empty beds) |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | CAN | Cancel. Used to cancel a query | Cancel. Used to cancel a query |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | DEM | Demographics | Demographics |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | FIN | Financial | Financial |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | GID | Generate new identifier | Generate new identifier |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | GOL | Goals | Goals |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | MRI | Most recent inpatient | Most recent inpatient |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | MRO | Most recent outpatient | Most recent outpatient |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | NCK | Network clock | Network clock |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | NSC | Network status change | Network status change |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | NST | Network statistic | Network statistic |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | ORD | Order | Order |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | OTH | Other | Other |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | PRB | Problems | Problems |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | PRO | Procedure | Procedure |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | RAR | Pharmacy administration information | Pharmacy administration information |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | RDR | Pharmacy dispense information | Pharmacy dispense information |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | RER | Pharmacy encoded order information | Pharmacy encoded order information |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | RES | Result | Result |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | RGR | Pharmacy give information | Pharmacy give information |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | ROR | Pharmacy prescription information | Pharmacy prescription information |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | SAL | All schedule related information, including open slots, booked slots, blocked slots | All schedule related information, including open slots, booked slots, blocked slots |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | SBK | Booked slots on the identified schedule | Booked slots on the identified schedule |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | SBL | Blocked slots on the identified schedule | Blocked slots on the identified schedule |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | SOF | First open slot on the identified schedule after the start date/time | First open slot on the identified schedule after the start date/time |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | SOP | Open slots on the identified schedule between the begin and end of the start date/time range | Open slots on the identified schedule between the begin and end of the start date/time range |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | SSA | Time slots available for a single appointment | Time slots available for a single appointment |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | SSR | Time slots available for a recurring appointment | Time slots available for a recurring appointment |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | STA | Status | Status |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | VXI | Vaccine Information | Vaccine Information |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter` | XID | Get cross-referenced identifiers | Get cross-referenced identifiers |  |

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