Patient Health Concern Data Absent Reason
Captures the reason that a patient's health concern is missing or not recorded.
In detail:
Specifies context and value of a Data Absent Reason (DAR) indicating why information is missing about a patient's health concern.
When a DAR is specified, this class shall be populated, but Patient Health Concern shall not.
Conversely, when an actual patient health concern (i.e., with a known value) is specified, the Patient Health Concern class shall be populated, but this class shall not.
In this class, the DAR code, i.e., the attribute Patient Health Concern Data Absent Reason Code, must always be populated.
If the DAR applies to all health concerns (i.e., for any health concern code), then DAR Code is populated. All other attributes, which provide context for the DAR, must be left empty.
If the DAR applies to a specific context, i.e., a particular health concern or a health concern category, then the corresponding context attribute must be populated as well, in addition to the DAR Code attribute. The DAR Code (e.g., asked-declined) then applies only to the specified context attribute value.
Note that since a health concern category is a set of health concerns, it follows that a health concern code implies a category. Therefore, only 1 of the 2 DAR context attributes, or none, should be populated, but not both: either Health Concern Code or Patient Health Concern Category Code.
Appears in
Constraints
Unique key(s)
- Patient, Patient Heatlh Concern Code if specified, Patient Health Concern Category Code if specified
Stereotype(s)
n/a
Attributes
| Attribute | Type | Multiplicity | Attribute note |
|---|---|---|---|
| Patient Health Concern Code | Codeable Concept | 0..1 | Uniquely specifies an active or historical health-related concern or an issue requiring attention.
Value Set:
https://fhir.infoway-inforoute.ca/ValueSet/healthconditioncode
For primary health care implementation: https://secure.cihi.ca/estore/productSeries.htm?pc=PCC2180
Alternate:
ICD-10: https://secure.cihi.ca/estore/productSeries.htm?pc=PCC1940 |
| Patient Health Concern Category Code | Codeable Concept | 0..1 | Uniquely specifies a classification of the type of a condition (e.g., problem list, encounter diagnosis).
Value Set: https://fhir.infoway-inforoute.ca/ValueSet/conditioncategorycodes |
| Patient Health Concern Data Absent Reason Code | Codeable Concept | 1 | Uniquely specifies the reason that health concern information is missing or not recorded for a patient (e.g., asked-declined, not-asked, unknown).
Value Set: http://terminology.hl7.org/CodeSystem/data-absent-reason |
Relationships
| From class | From multiplicity | Relationship | To class | To multiplicity |
|---|---|---|---|---|
| Patient Health Concern Data Absent Reason | 0..* | has | Clinical Information Life Cycle Event | 0..* |
| Patient Health Concern Data Absent Reason | 0..* | documented in | Encounter | 0..1 |
| Patient | 1 | has | Patient Health Concern Data Absent Reason | 0..* |
Contact us
If you have questions about this initiative, would like to be added to our stakeholder notification list or would like to participate in our consultations, please email us.
How to cite:
Canadian Institute for Health Information. Patient Health Concern Data Absent Reason. Accessed November 02, 2026.
