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NullFlavor      [2.16.840.1.113883.5.1008]

Description:

OpenIssue: Missing description.

Lvl- Typ Concept Code
  Head Code-defined Value Set
Print Name Definition, Properties, Relationships
0-S NI
 v:NoInformation
NoInformation

Definition:

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.

Concept Relationships:
  Generalizes (derived): INV MSK NA UNK

1-S INV invalid

Definition:

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.

Concept Relationships:
  Specializes: NI
  Generalizes (derived): DER OTH UNC

2-L . . DER derived

Definition:

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 .

Concept Relationships:
  Specializes: INV

2-S . . OTH
. .   v:Other
other

Definition:

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).

Concept Relationships:
  Specializes: INV
  Generalizes (derived): NINF PINF

3-L . . . NINF negative infinity

Definition:

Negative infinity of numbers.

Concept Relationships:
  Specializes: OTH

3-L . . . PINF positive infinity

Definition:

Positive infinity of numbers.

Concept Relationships:
  Specializes: OTH

2-L . . UNC un-encoded

Definition:

Definition: The actual value has not yet been encoded within the approved valueset for the domain.

Example: Original text or a local code has been specified but translation or encoding to the approved valueset has not yet occurred.

Usage Notes: If it is known that it is not possible to encode the concept, OTH should be used instead.

Concept Relationships:
  Specializes: INV

1-L MSK masked

Definition:

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.

Concept Relationships:
  Specializes: NI

1-L NA not applicable

Definition:

Known to have no proper value (e.g., last menstrual period for a male).

Concept Relationships:
  Specializes: NI

1-S UNK
 v:Unknown
unknown

Definition:

A proper value is applicable, but not known.

Concept Relationships:
  Specializes: NI
  Generalizes (derived): ASKU NASK QS TRC

2-S . . ASKU
. .   v:AskedButUnknown
asked but unknown

Definition:

Information was sought but not found (e.g., patient was asked but didn't know)

Concept Relationships:
  Specializes: UNK
  Generalizes (derived): NAV

3-L . . . NAV temporarily unavailable

Definition:

Information is not available at this time but it is expected that it will be available later.

Concept Relationships:
  Specializes: ASKU

2-L . . NASK not asked

Definition:

This information has not been sought (e.g., patient was not asked)

Concept Relationships:
  Specializes: UNK

2-L . . QS Sufficient Quantity

Definition:

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.

Concept Relationships:
  Specializes: UNK

2-L . . TRC trace

Definition:

The content is greater than zero, but too small to be quantified.

Concept Relationships:
  Specializes: UNK


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