v3-NullFlavor
type: CodeSystem
node role: treeRoot
id:
  v: v3-NullFlavor
language:
  v: en
text:
  status:
    v: generated
  div: Generated Narrative: CodeSystem v3-NullFlavor Language: en Properties This code system defines the following properties for its concepts Name Code URI Type Description Specializes Specializes Coding The child code is a more narrow version of the concept represented by the parent code. I.e. Every child concept is also a valid parent concept. Used to allow determination of subsumption. Must be transitive, irreflexive, antisymmetric. Generalizes Generalizes Coding Inverse of Specializes. Only included as a derived relationship. internalId internalId http://terminology.hl7.org/CodeSystem/utg-concept-properties#v3-internal-id code The internal identifier for the concept in the HL7 Access database repository. Status status http://hl7.org/fhir/concept-properties#status code Designation of a concept's state. Normally is not populated unless the state is retired.. HL7 Concept Usage Notes HL7usageNotes http://terminology.hl7.org/CodeSystem/utg-concept-properties#HL7usageNotes string HL7 Concept Usage Notes Parent subsumedBy http://hl7.org/fhir/concept-properties#parent code The concept code of a parent concept Concepts This case-sensitive code system http://terminology.hl7.org/CodeSystem/v3-NullFlavor defines the following codes in a Is-A hierarchy: Lvl Code Display Definition internalId Status HL7 Concept Usage Notes Parent 1 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. 10610 active 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. 22656 active NI 3 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 express…
url:
  v: http://terminology.hl7.org/CodeSystem/v3-NullFlavor
identifier:
  system:
    v: urn:ietf:rfc:3986
  value:
    v: urn:oid:2.16.840.1.113883.5.1008
version:
  v: 3.0.0
name:
  v: NullFlavor
title:
  v: NullFlavor
status:
  v: active
experimental:
  v: false
date:
  v: 2019-03-20
publisher:
  v: Health Level Seven International
contact:
  telecom:
    system:
      v: url
    value:
      v: http://hl7.org
  telecom:
    system:
      v: email
description:
  v: A collection of codes specifying why a valid value is not present.
copyright:
  v: This material derives from the HL7 Terminology THO. THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license.html
case sensitive:
  v: true
hierarchy meaning:
  v: is-a
content:
  v: complete
property:
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-symmetry
    value: code
      v: antisymmetric
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-transitivity
    value: code
      v: transitive
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-reflexivity
    value: code
      v: irreflexive
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-isNavigable
    value: boolean
      v: true
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-relationshipKind
    value: code
      v: Specializes
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-inverseName
    value: string
      v: Generalizes
  code:
    v: Specializes
  description:
    v: The child code is a more narrow version of the concept represented by the parent code. I.e. Every child concept is also a valid parent concept. Used to allow determination of subsumption. Must be transitive, irreflexive, antisymmetric.
  type:
    v: Coding
property:
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-symmetry
    value: code
      v: antisymmetric
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-transitivity
    value: code
      v: transitive
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-reflexivity
    value: code
      v: irreflexive
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-isNavigable
    value: boolean
      v: true
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-relationshipKind
    value: code
      v: Generalizes
  extension:
    url:
      v: http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-inverseName
    value: string
      v: Specializes
  code:
    v: Generalizes
  description:
    v: Inverse of Specializes. Only included as a derived relationship.
  type:
    v: Coding
property:
  code:
    v: internalId
  uri:
    v: http://terminology.hl7.org/CodeSystem/utg-concept-properties#v3-internal-id
  description:
    v: The internal identifier for the concept in the HL7 Access database repository.
  type:
    v: code
property:
  code:
    v: status
  uri:
    v: http://hl7.org/fhir/concept-properties#status
  description:
    v: Designation of a concept's state. Normally is not populated unless the state is retired..
  type:
    v: code
property:
  code:
    v: HL7usageNotes
  uri:
    v: http://terminology.hl7.org/CodeSystem/utg-concept-properties#HL7usageNotes
  description:
    v: HL7 Concept Usage Notes
  type:
    v: string
property:
  code:
    v: subsumedBy
  uri:
    v: http://hl7.org/fhir/concept-properties#parent
  description:
    v: The concept code of a parent concept
  type:
    v: code
concept:
  code:
    v: NI
  display:
    v: NoInformation
  definition:
    v: **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.
  property:
    code:
      v: status
    value: code
      v: active
  property:
    code:
      v: internalId
    value: code
      v: 10610
concept:
  code:
    v: NP
  display:
    v: not present
  definition:
    v: 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.
  property:
    code:
      v: status
    value: code
      v: retired
  property:
    code:
      v: internalId
    value: code
      v: 10619
concept:
  code:
    v: NAV
  display:
    v: temporarily unavailable
  definition:
    v: Information is not available at this time but it is expected that it will be available later.

code:
  v: status
value: code
  v: active

code:
  v: internalId
value: code
  v: 10615

code:
  v: subsumedBy
value: code
  v: ASKU

code:
  v: subsumedBy
value: code
  v: NAVU

code:
  v: DER
display:
  v: derived
definition:
  v: **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 .
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: internalId
  value: code
    v: 22657
property:
  code:
    v: subsumedBy
  value: code
    v: INV

code:
  v: OTH
display:
  v: other
definition:
  v: **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.
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: HL7usageNotes
  value: string
    v: 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.
property:
  code:
    v: internalId
  value: code
    v: 10616
property:
  code:
    v: subsumedBy
  value: code
    v: INV

code:
  v: UNC
display:
  v: un-encoded
definition:
  v: **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.
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: HL7usageNotes
  value: string
    v: 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.
property:
  code:
    v: internalId
  value: code
    v: 22185
property:
  code:
    v: subsumedBy
  value: code
    v: INV

code:
  v: INV
display:
  v: invalid
definition:
  v: **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.
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: internalId
  value: code
    v: 22656
property:
  code:
    v: subsumedBy
  value: code
    v: NI

code:
  v: MSK
display:
  v: masked
definition:
  v: 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.
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: internalId
  value: code
    v: 17932
property:
  code:
    v: subsumedBy
  value: code
    v: NI

code:
  v: NA
display:
  v: not applicable
definition:
  v: Known to have no proper value (e.g., last menstrual period for a male).
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: internalId
  value: code
    v: 10611
property:
  code:
    v: subsumedBy
  value: code
    v: NI

code:
  v: UNK
display:
  v: unknown
definition:
  v: **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: 1. Those properties themselves directly translate to a semantic of "unknown". (E.g. a local code sent as a translation that conveys 'unknown') 2. 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.)
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: HL7usageNotes
  value: string
    v: 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.)
property:
  code:
    v: internalId
  value: code
    v: 10612
property:
  code:
    v: subsumedBy
  value: code
    v: NI

code:
  v: NINF
display:
  v: negative infinity
definition:
  v: Negative infinity of numbers.
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: internalId
  value: code
    v: 10618
property:
  code:
    v: subsumedBy
  value: code
    v: OTH

code:
  v: PINF
display:
  v: positive infinity
definition:
  v: Positive infinity of numbers.
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: internalId
  value: code
    v: 10617
property:
  code:
    v: subsumedBy
  value: code
    v: OTH

code:
  v: ASKU
display:
  v: asked but unknown
definition:
  v: Information was sought but not found (e.g., patient was asked but didn't know)
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: internalId
  value: code
    v: 10614
property:
  code:
    v: subsumedBy
  value: code
    v: UNK

code:
  v: NASK
display:
  v: not asked
definition:
  v: This information has not been sought (e.g., patient was not asked)
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: internalId
  value: code
    v: 10613
property:
  code:
    v: subsumedBy
  value: code
    v: UNK

code:
  v: NAVU
display:
  v: Not available
definition:
  v: Information is not available at this time (with no expectation regarding whether it will or will not be available in the future).
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: internalId
  value: code
    v: 23731
property:
  code:
    v: subsumedBy
  value: code
    v: UNK

code:
  v: QS
display:
  v: Sufficient Quantity
definition:
  v: **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.
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: internalId
  value: code
    v: 21436
property:
  code:
    v: subsumedBy
  value: code
    v: UNK

code:
  v: TRC
display:
  v: trace
definition:
  v: The content is greater than zero, but too small to be quantified.
property:
  code:
    v: status
  value: code
    v: active
property:
  code:
    v: internalId
  value: code
    v: 21386
property:
  code:
    v: subsumedBy
  value: code
    v: UNK