DG1 Segment

Field	Description	Type	Usage	Notes/Comments
DG1-1	Set ID - DG1	SI	R
DG1-2	Diagnosis Coding Method	ID	X
DG1-3	Diagnosis Code - DG1	CWE	R/O	One of diagnosis code (DG1-3) or description (DG1-4) is required. Free text and local coding systems are supported but ICD10 or other canonical coding system is strongly preferred.
DG1-4	Diagnosis Description	ST	R/O
DG1-5	Diagnosis Date/Time	DTM	RE
DG1-6	Diagnosis Type	CWE	RE
DG1-7	Major Diagnostic Category	CNE	O
DG1-8	Diagnostic Related Group	CNE	O
DG1-9	DRG Approval Indicator	ID	X
DG1-10	DRG Grouper Review Code	CWE	X
DG1-11	Outlier Type	CWE	X
DG1-12	Outlier Days	NM	X
DG1-13	Outlier Cost	CP	X
DG1-14	Grouper Version and Type	ST	X
DG1-15	Diagnosis Priority	NM	O
DG1-16	Diagnosing Clinician	XCN	RE
DG1-17	Diagnosis Classification	CWE	X
DG1-18	Confidential Indicator	ID	X
DG1-19	Attestation Date/Time	DTM	X
DG1-20	Diagnosis Identifier	EI	X
DG1-21	Diagnosis Action Code	ID	O	Preferred values from HL7 Table 0206
DG1-22	Parent Diagnosis	EI	X
DG1-23	DRG CCL Value Code	CWE	X
DG1-24	DRG Grouping Usage	ID	X
DG1-25	DRG Diagnosis Determination Status	CWE	X
DG1-26	Present on Admission (POA) Indicator	CWE	X