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 to C-CDA No Known Allergies

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

FHIR negated code for No Known Allergies to C-CDA Allergy Intolerance Observation value.

Note that when placing the target code in the C-CDA AllergyIntolerance Observation, the Observation must have @negationInd=true.

Mapping from https://vsac.nlm.nih.gov/valueset/2.16.840.1.113762.1.4.1186.8/ to https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.88.12.3221.6.2/

Group 1 Mapping from SNOMED CT (all versions) to SNOMED CT (all versions)

Source Code | Relationship | Target Code | Comment
429625007 (No known food allergy) | is equivalent to | 414285001 (Allergy to food) | Set @negationInd=true
409137002 (No known drug allergy) | is equivalent to | 416098002 (Allergy to drug) | Set @negationInd=true
716186003 (No known allergy) | is equivalent to | 419199007 (Allergy to substance) | Set @negationInd=true
428607008 (No known environmental allergy) | (not mapped) | There is no clear match that conforms to valueset binding of C-CDA Allergy Intolerance value. Feedback welcome