HL7 Version 2 to FHIR
1.0.0 - STU 1

HL7 Version 2 to FHIR - Downloaded Version 1.0.0 See the Directory of published versions

## ConceptMap: Segment DG1 to Condition Map (Experimental)

Official URL: http://hl7.org/fhir/uv/v2mappings/ConceptMap/segment-dg1-to-condition | Version: 1.0.0
Standards status: Informative | Computable Name: SegmentDG1ToCondition
Copyright/Legal: Copyright (c) 2025, HL7 International, Inc., All Rights Reserved.

This ConceptMap represents a mapping from the HL7 V2 Segment DG1 to the FHIR Condition Resource.

This ConceptMap represents the mapping from the HL7 V2 DG1 Segment to the FHIR Condition Resource. See also the FHIR Shorthand or the CSV Source.

HL7 v2 | Condition (IF True, args) | HL7 FHIR | Comments
--- | --- | --- | ---
Sort Order | Identifier | Name | Data Type | Cardinality - Min | Cardinality - Max | Computable ANTLR | Computable FHIRPath | Narrative | FHIR Attribute | Extension | Data Type | Cardinality - Min | Cardinality - Max | Data Type Mapping | Vocabulary Mapping (IS, ID, CE, CEN, CWE) | Assignment
1 | DG1-1 | Set ID | SI | 1 | 1 |  |  |  |  |  |  |  |  |  |  |  |
2 | DG1-2 | Diagnosis Coding Method | ID | 1 | 1 |  |  |  |  |  |  |  |  |  |  |  |
3 | DG1-3 | Diagnosis Code | CWE | 1 | 1 |  |  |  | code |  | CodeableConcept | 0 | 1 | CWE[CodeableConcept] |  |  |
4 | DG1-4 | Diagnosis Description | ST | 0 | 1 |  |  |  | Condition.code.text |  |  | 0 | 1 |  |  |  |
5 | DG1-5 | Diagnosis Date/Time | DTM | 0 | 1 |  |  |  | Condition.onsetDateTime |  | dateTime | 0 | 1 |  |  |  | Should confirm that these two concepts are equivalent. Condition.recordedDate is also available
6 | DG1-6 | Diagnosis Type | CWE | 1 | 1 |  |  |  |  |  |  |  |  |  |  |  |
7 | DG1-7 | Major Diagnostic Category | CE | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
8 | DG1-8 | Diagnostic Related Group | CE | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
9 | DG1-9 | DRG Approval Indicator | ID | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
10 | DG1-10 | DRG Grouper Review Code | IS | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
11 | DG1-11 | Outlier Type | CE | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
12 | DG1-12 | Outlier Days | NM | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
13 | DG1-13 | Outlier Cost | CP | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
14 | DG1-14 | Grouper Version And Type | ST | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
15 | DG1-15 | Diagnosis Priority | NM | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  | Could contribute to Condition.category or be a new extension
16 | DG1-16 | Diagnosing Clinician | XCN | 0 | -1 |  |  |  | Condition.asserter(Condition.Practitioner) |  | Reference | 0 | 1 | XCN[Practitioner] |  |  | Condition.recorder is also an option. Neither of these fields can repeat like DG1-16 can.
17 | DG1-17 | Diagnosis Classification | CWE | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
18 | DG1-18 | Confidential Indicator | ID | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
19 | DG1-19 | Attestation Date/Time | DTM | 0 | 1 |  |  |  | Condition.extension.url |  | uri | 1 | 1 |  |  | "http://www.hl7.org/fhir/extension-condition-asserteddate" |
19 | DG1-19 | Attestation Date/Time | DTM | 0 | 1 |  |  |  | Condition.extension.valueDateTime |  | dateTime | 1 | 1 |  |  |  | It is unclear whether to use recorded or asserted date. What is your opinion?
19 | DG1-19 | Attestation Date/Time | DTM | 0 | 1 |  |  |  | Condition.recordedDate |  | dateTime | 0 | 1 |  |  |  | It is unclear whether to use recorded or asserted date. What is your opinion?
20 | DG1-20 | Diagnosis Identifier | EI | 0 | 1 |  |  |  | Identifier |  | Identifier | 0 | -1 | EI[Identifier-Extension] |  |  |
21 | DG1-21 | Diagnosis Action Code | ID | 0 | 1 |  |  |  | Condition.verificationStatus.coding.code |  | code | 0 | 1 |  |  | "entered-in-error" | Other values (A and U) don't map to anything
21 | DG1-21 | Diagnosis Action Code | ID | 0 | 1 |  |  |  | Condition.verificationStatus.coding.system |  | uri | 0 | 1 |  |  | "http://terminology.hl7.org/CodeSystem/condition-ver-status" |
22 | DG1-22 | Parent Diagnosis | EI | 0 | 1 |  |  |  | Condition.extension.url |  | uri | 1 | 1 |  |  | "http://hl7.org/fhir/StructureDefinition/condition-dueTo" |
22 | DG1-22 | Parent Diagnosis | EI | 0 | 1 |  |  |  | Condition.extension.valueReference(Condition.Condition) |  | Reference | 1 | 1 | EI[Condition] |  |  | Extensions for occurredFollowing and related also exist
23 | DG1-23 | DRG CCL Value Code | CWE | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
24 | DG1-24 | DRG Grouping Usage | ID | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
25 | DG1-25 | DRG Diagnosis Determination Status | CWE | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  |
26 | DG1-26 | Present On Admission (POA) Indicator | CWE | 0 | 1 |  |  |  |  |  |  |  |  |  |  |  | This could contribute to Condition.category, if that value set it extended to include multiple types of diagnoses

Mapping from (not specified) to (not specified)

Group 1 Mapping from `unspecified code system` to `unspecified code system`

Source Code | Relationship | Target Code | Comment
DG1-3 (Diagnosis Code) | is equivalent to | code[1] |
DG1-4 (Diagnosis Description) | is equivalent to | code[1].text |
DG1-5 (Diagnosis Date/Time) | is equivalent to | onsetDateTime | Should confirm that these two concepts are equivalent. Condition.recordedDate is also available
DG1-16 (Diagnosing Clinician) | is equivalent to | asserter(Practitioner) | Condition.recorder is also an option. Neither of these fields can repeat like DG1-16 can.
DG1-19 (Attestation Date/Time) | is equivalent to | extension[1].url |
DG1-19 (Attestation Date/Time) | is equivalent to | extension[1].valueDateTime | It is unclear whether to use recorded or asserted date. What is your opinion?
DG1-19 (Attestation Date/Time) | is equivalent to | recordedDate | It is unclear whether to use recorded or asserted date. What is your opinion?
DG1-20 (Diagnosis Identifier) | is equivalent to | identifier |
DG1-21 (Diagnosis Action Code) | is equivalent to | verificationStatus.coding.code | Other values (A and U) don't map to anything
DG1-21 (Diagnosis Action Code) | is equivalent to | verificationStatus.coding.system |
DG1-22 (Parent Diagnosis) | is equivalent to | extension[2].url |
DG1-22 (Parent Diagnosis) | is equivalent to | extension[2].valueReference(Condition) | Extensions for occurredFollowing and related also exist

### Notes: