FHIR IG analytics| Package | hl7.fhir.uv.xver-r2.r4b |
| Resource Type | ValueSet |
| Id | ValueSet-R2-v3-NullFlavor-for-R4B.json |
| FHIR Version | R4B |
| Source | http://hl7.org/fhir/uv/xver-r2.r4b/0.1.0/ValueSet-R2-v3-NullFlavor-for-R4B.html |
| URL | http://hl7.org/fhir/uv/xver/ValueSet/R2-v3-NullFlavor-for-R4B |
| Version | 0.1.0 |
| Status | active |
| Date | 2026-03-17T21:02:03.8104715+00:00 |
| Name | R2V3NullFlavorForR4B |
| Title | Cross-version ValueSet DSTU2.v3 Code System NullFlavor for use in FHIR R4B |
| Realm | uv |
| Authority | hl7 |
| Description | This cross-version ValueSet represents content from `http://hl7.org/fhir/ValueSet/v3-NullFlavor|2015-07-31` for use in FHIR R4B. |
| Purpose | This value set is part of the cross-version definitions generated to enable use of the value set `http://hl7.org/fhir/ValueSet/v3-NullFlavor|2015-07-31` as defined in FHIR DSTU2 in FHIR R4B. The source value set is bound to the following FHIR DSTU2 elements: * Across FHIR versions, the value set has been mapped as: * `http://hl7.org/fhir/ValueSet/v3-NullFlavor|2015-07-31` * `http://hl7.org/fhir/ValueSet/v3-NullFlavor|2016-11-11` * `http://terminology.hl7.org/ValueSet/v3-NullFlavor|2018-08-12` Note that all concepts are included in this cross-version definition because no concepts have compatible representations Following are the generation technical comments: All concepts in the comparison are listed as identical. The source and target value sets have the same number of active concepts (16). One or more source concepts are either not mapped or broader than their targets, so the value set relationship is broadened. All concepts in the comparison are listed as identical. The source value set has fewer active concepts (16) than the target (17), so the source is narrower than the target. FHIR ValueSet `http://hl7.org/fhir/ValueSet/v3-NullFlavor|2015-07-31`, defined in FHIR DSTU2 does not have any mapping to FHIR R4B |
No resources found
| CodeSystem | ||
| hl7.fhir.uv.xver-r2.r4b#0.1.0 | NullFlavor | v3-NullFlavor |
Note: links and images are rebased to the (stated) source
Generated Narrative: ValueSet R2-v3-NullFlavor-for-R4B
This value set expansion contains 16 concepts.
| System | Version | Code | Display | Definition |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | ASKU | asked but unknown | Information was sought but not found (e.g. patient was asked but didn't know) |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | DER | derived | Description:An actual value may exist, but it must be derived from the provided information (usually an EXPR generic data type extension will be used to convey the derivation expressionexpression . |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | INV | invalid | Description:The value as represented in the instance is not a member of the set of permitted data values in the constrained value domain of a variable. |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | MSK | masked | There is information on this item available but it has not been provided by the sender due to security, privacy or other reasons. There may be an alternate mechanism for gaining access to this information. Note: using this null flavor does provide information that may be a breach of confidentiality, even though no detail data is provided. Its primary purpose is for those circumstances where it is necessary to inform the receiver that the information does exist without providing any detail. |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | NA | not applicable | Known to have no proper value (e.g. last menstrual period for a male). |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | NASK | not asked | This information has not been sought (e.g. patient was not asked) |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | NAV | temporarily unavailable | Information is not available at this time but it is expected that it will be available later. |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | NI | NoInformation | Description:The value is exceptional (missing, omitted, incomplete, improper). No information as to the reason for being an exceptional value is provided. This is the most general exceptional value. It is also the default exceptional value. |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | NINF | negative infinity | Negative infinity of numbers. |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | NP | not present | Value is not present in a message. This is only defined in messages, never in application data! All values not present in the message must be replaced by the applicable default, or no-information (NI) as the default of all defaults. |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | OTH | other | Description:The actual value is not a member of the set of permitted data values in the constrained value domain of a variable. (e.g. concept not provided by required code system). Usage Notes: This flavor and its specializations are most commonly used with the CD datatype and its flavors. However, it may apply to any datatype where the constraints of the type are tighter than can be conveyed. For example, a PQ that is for a true measured amount whose units are not supported in UCUM, a need to convey a REAL when the type has been constrained to INT, etc. With coded datatypes, this null flavor may only be used if the vocabulary binding has a coding strength of CNE. By definition, all local codes and original text are part of the value set if the coding strength is CWE. |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | PINF | positive infinity | Positive infinity of numbers. |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | QS | Sufficient Quantity | Description:The specific quantity is not known, but is known to be non-zero and is not specified because it makes up the bulk of the material; e.g. 'Add 10mg of ingredient X, 50mg of ingredient Y, and sufficient quantity of water to 100mL.' The null flavor would be used to express the quantity of water. |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | TRC | trace | The content is greater than zero, but too small to be quantified. |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | UNC | un-encoded | Description: The actual value has not yet been encoded within the approved value domain. Example: Original text or a local code has been specified but translation or encoding to the approved value set has not yet occurred due to limitations of the sending system. Original text has been captured for a PQ, but not attempt has been made to split the value and unit or to encode the unit in UCUM. Usage Notes: If it is known that it is not possible to encode the concept, OTH should be used instead. However, use of UNC does not necessarily guarantee the concept will be encodable, only that encoding has not been attempted. Data type properties such as original text and translations may be present when this null flavor is included. |
http://hl7.org/fhir/v3/NullFlavor | 1.0.2 | UNK | unknown | Description:A proper value is applicable, but not known. Usage Notes: This means the actual value is not known. If the only thing that is unknown is how to properly express the value in the necessary constraints (value set, datatype, etc.), then the OTH or UNC flavor should be used. No properties should be included for a datatype with this property unless: Those properties themselves directly translate to a semantic of "unknown". (E.g. a local code sent as a translation that conveys 'unknown') Those properties further qualify the nature of what is unknown. (E.g. specifying a use code of "H" and a URL prefix of "tel:" to convey that it is the home phone number that is unknown.) |
FHIR
FHIRsmith{
"resourceType": "ValueSet",
"id": "R2-v3-NullFlavor-for-R4B",
"text": {
"status": "generated",
"div": "<!-- snip (see above) -->"
},
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
"valueCode": "fhir"
},
{
"extension": [
{
"url": "packageId",
"valueId": "hl7.fhir.uv.xver-r2.r4b"
},
{
"url": "version",
"valueString": "0.1.0"
},
{
"url": "uri",
"valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r2.r4b"
}
],
"url": "http://hl7.org/fhir/StructureDefinition/package-source"
},
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
"valueInteger": 0,
"_valueInteger": {
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
"valueCanonical": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r2.r4b"
}
]
}
},
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
"valueCode": "trial-use",
"_valueCode": {
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
"valueCanonical": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r2.r4b"
}
]
}
}
],
"url": "http://hl7.org/fhir/uv/xver/ValueSet/R2-v3-NullFlavor-for-R4B",
"version": "0.1.0",
"name": "R2V3NullFlavorForR4B",
"title": "Cross-version ValueSet DSTU2.v3 Code System NullFlavor for use in FHIR R4B",
"status": "active",
"experimental": false,
"date": "2026-03-17T21:02:03.8104715+00:00",
"publisher": "FHIR Infrastructure",
"contact": [
{
"name": "FHIR Infrastructure",
"telecom": [
{
"system": "url",
"value": "http://www.hl7.org/Special/committees/fiwg"
}
]
}
],
"description": "This cross-version ValueSet represents content from `http://hl7.org/fhir/ValueSet/v3-NullFlavor|2015-07-31` for use in FHIR R4B.",
"jurisdiction": [
{
"coding": [
{
"system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
"code": "001",
"display": "World"
}
]
}
],
"purpose": "This value set is part of the cross-version definitions generated to enable use of the\r\nvalue set `http://hl7.org/fhir/ValueSet/v3-NullFlavor|2015-07-31` as defined in FHIR DSTU2\r\nin FHIR R4B.\r\n\r\nThe source value set is bound to the following FHIR DSTU2 elements:\r\n* \r\n\r\nAcross FHIR versions, the value set has been mapped as:\r\n* `http://hl7.org/fhir/ValueSet/v3-NullFlavor|2015-07-31`\n* `http://hl7.org/fhir/ValueSet/v3-NullFlavor|2016-11-11`\n* `http://terminology.hl7.org/ValueSet/v3-NullFlavor|2018-08-12`\r\n\r\nNote that all concepts are included in this cross-version definition because no concepts have compatible representations\r\n\r\nFollowing are the generation technical comments:\r\nAll concepts in the comparison are listed as identical.\nThe source and target value sets have the same number of active concepts (16).\nOne or more source concepts are either not mapped or broader than their targets, so the value set relationship is broadened.\nAll concepts in the comparison are listed as identical.\nThe source value set has fewer active concepts (16) than the target (17), so the source is narrower than the target.\nFHIR ValueSet `http://hl7.org/fhir/ValueSet/v3-NullFlavor|2015-07-31`, defined in FHIR DSTU2 does not have any mapping to FHIR R4B",
"compose": {
"include": [
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"concept": [
{
"code": "ASKU",
"display": "asked but unknown"
},
{
"code": "DER",
"display": "derived"
},
{
"code": "INV",
"display": "invalid"
},
{
"code": "MSK",
"display": "masked"
},
{
"code": "NA",
"display": "not applicable"
},
{
"code": "NASK",
"display": "not asked"
},
{
"code": "NAV",
"display": "temporarily unavailable"
},
{
"code": "NI",
"display": "NoInformation"
},
{
"code": "NINF",
"display": "negative infinity"
},
{
"code": "NP",
"display": "not present"
},
{
"code": "OTH",
"display": "other"
},
{
"code": "PINF",
"display": "positive infinity"
},
{
"code": "QS",
"display": "Sufficient Quantity"
},
{
"code": "TRC",
"display": "trace"
},
{
"code": "UNC",
"display": "un-encoded"
},
{
"code": "UNK",
"display": "unknown"
}
]
}
]
},
"expansion": {
"timestamp": "2026-03-17T21:02:03.8104715+00:00",
"contains": [
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "ASKU",
"display": "asked but unknown"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "DER",
"display": "derived"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "INV",
"display": "invalid"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "MSK",
"display": "masked"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "NA",
"display": "not applicable"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "NASK",
"display": "not asked"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "NAV",
"display": "temporarily unavailable"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "NI",
"display": "NoInformation"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "NINF",
"display": "negative infinity"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "NP",
"display": "not present"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "OTH",
"display": "other"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "PINF",
"display": "positive infinity"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "QS",
"display": "Sufficient Quantity"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "TRC",
"display": "trace"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "UNC",
"display": "un-encoded"
},
{
"system": "http://hl7.org/fhir/v3/NullFlavor",
"version": "1.0.2",
"code": "UNK",
"display": "unknown"
}
]
}
}