C-CDA on FHIR
2.0.0-ballot - STU 2 Ballot

C-CDA on FHIR, published by HL7 International / Cross-Group Projects. This guide is not an authorized publication; it is the continuous build for version 2.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/ccda-on-fhir/ and changes regularly. See the Directory of published versions

## ConceptMap: FHIR Data Absent Reason to C-CDA NullFlavor

Official URL: http://hl7.org/fhir/us/ccda/ConceptMap/FC-DataAbsentReasonNullFlavor | Version: 2.0.0-ballot
Standards status: Trial-use | Computable Name: FHIRtoCCDADataAbsentReasonNullFlavor

FHIR Data Absent Reason to C-CDA NullFlavor. Adapted from https://hl7.org/fhir/R4/cm-data-absent-reason-v3.html but several key changes have been made. Note that this prior concept map (from R4) is no longer included in current FHIR build.

Mapping from DataAbsentReason to NullFlavor

Group 1 Mapping from DataAbsentReason to NullFlavor

Source Code | Relationship | Target Code | Comment
unknown | maps to wider concept | NI (NoInformation) | In CDA, 'UNK' means 'a proper value is applicable, but not known.' Guidance has been to use this when the value is known to exist and to use the broader 'NI' when no specific information about why the value is unknown. FHIR's data absent reason of 'unknown' better maps to 'NI'.
asked-unknown (Asked But Unknown) | is equivalent to | ASKU (asked but unknown) |
temp-unknown (Temporarily Unknown) | is equivalent to | NAV (temporarily unavailable) |
not-asked | is equivalent to | NASK (not asked) |
asked-declined (Asked But Declined) | maps to wider concept | UNK (unknown) |
masked | is equivalent to | MSK (masked) |
not-applicable | is equivalent to | NA (not applicable) |
unsupported | maps to wider concept | NI (NoInformation) |
as-text | maps to wider concept | OTH (other) |
error | maps to wider concept | NAV (temporarily unavailable) |
not-a-number (Not a Number (NaN)) | maps to wider concept | OTH (other) |
negative-infinity (Negative Infinity (NINF)) | is equivalent to | NINF (negative infinity) |
positive-infinity (Positive Infinity (PINF)) | is equivalent to | PINF (positive infinity) |
not-performed | maps to wider concept | NASK (not asked) |
not-permitted | maps to wider concept | OTH (other) |