admitted_from_concept_id

CDS VisitDetails

Source column SourceofAdmissionCode. Lookup admission source concept.

SourceofAdmissionCode	admitted_from_concept_id	notes
19	0	Home - Used 0 as Home as per the OHDSI documentation
29	8602	Temporary Lodging
37	4050489	County court bailiff - Had to use the Social Context Domain and SNOMED Vocab
40	38003619	Prison / Correctional Facility
42	4107305	Police station - Had to use the Observation Domain and SNOMED Vocab
49	38004284	Psychiatric Hospital
51	8717	Inpatient Hospital
52	8650	Birthing Center
53	8976	Psychiatric Residential Treatment Center
55	8863	Skilled Nursing Facility
56	38004306	Custodial Care Facility
66	38004205	Foster Care Agency
79	40482051	Born before arrival to hospital
87	4113007	Inpatient Hospital
88	8546	Hospice
98		No mapping possible
99		No mapping possible

Notes

• Admission Source

• SourceofAdmissionCode Admission Source. ADMISSION SOURCE (HOSPITAL PROVIDER SPELL)

;with RecordConnectionIdentifierNHSNumberCombination as (
	select
		distinct 
			l1.NHSNumber,
			l1.RecordConnectionIdentifier
	from omop_staging.cds_line01 l1
), RecordsWithVariableNhsNumber as (
select
	m1.RecordConnectionIdentifier
from RecordConnectionIdentifierNHSNumberCombination m1
	inner join RecordConnectionIdentifierNHSNumberCombination m2
		on m1.NHSNumber != m2.NHSNumber
where m1.RecordConnectionIdentifier = m2.RecordConnectionIdentifier
), VisitDetail as (
	select  
		distinct
    
			l1.NHSNumber,
			l5.HospitalProviderSpellNumber,

			case 
				when l5.AdmissionMethodCode in ('21','24') and l5.PatientClassification = 1 then 262 
				when l5.AdmissionMethodCode in ('21','24') then 9203
				when l5.PatientClassification in (1) then 9201
				when l4.LocationClass in ('02') then 581476
				else 9202
			end as VisitOccurrenceConceptId,    -- ""visit_concept_id""

			l1.RecordConnectionIdentifier,

			coalesce(l5.EpisodeStartDate, l5.StartDateHospitalProviderSpell, l1.CDSActivityDate) as VisitStartDate,  -- visit_start_date
			coalesce(l5.EpisodeStartTime, l5.StartTimeHospitalProviderSpell, '000000') as VisitStartTime,  -- visit_start_time

			coalesce(l5.EpisodeEndDate, l5.DischargeDateHospitalProviderSpell, l1.CDSActivityDate) as VisitEndDate,

			coalesce(l5.EpisodeEndTime, l5.DischargeTimeHospitalProviderSpell, '000000') as VisitEndTime,

			case 
				when l5.EpisodeEndDate is null and l5.DischargeDateHospitalProviderSpell is null and l5.PatientClassification = 1 then 32220
				else 32818
			end as VisitTypeConceptId,

			case 
				when l5.EpisodeEndDate is null and l5.DischargeDateHospitalProviderSpell is null and l5.PatientClassification = 1 then 2
				else 1
			end as RowPriority,

			l5.SourceofAdmissionCode,
			l5.DischargeDestinationCode
	from [omop_staging].[cds_line01] l1
		left join [omop_staging].[cds_line04] l4 
			on l1.MessageId = l4.MessageId -- Location Details
		left join [omop_staging].[cds_line05] l5 
			on l1.MessageId = l5.MessageId -- Hospital Provider Spell
		inner join dbo.Code c 
			on l1.ActivityTreatmentFunctionCode = c.Code
	where l1.CDSUpdateType = 9   -- New/Modification     (1 = Delete)
		and l1.NHSNumber is not null
		and c.CodeTypeId = 2 -- activity_treatment_function_code
		and not exists (select * from RecordsWithVariableNhsNumber rwvnn where rwvnn.RecordConnectionIdentifier = l1.RecordConnectionIdentifier)
), VisitDetailWithRank as (
	select
		*,
		row_number() over (partition by RecordConnectionIdentifier order by RowPriority asc) as RowRank
	from VisitDetail
)
select
	*
from VisitDetailWithRank
where RowRank = 1
		
	

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