: Data-Field 41262

Data-Field 41262

Description:	Date of first in-patient diagnosis - main ICD10
Category:	Health outcomes ⏵ Externally sourced health outcomes ⏵ Hospital inpatient ⏵ Summary Diagnoses
	Health outcomes

Participants

448,646

Date

Both sexes

Jan 2019

2,524,659

Data

Singular

Aug 2025

Updateable

Primary

Yes (85)

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Data

2,524,659 items of data are available, covering 448,646 participants.
Array indices run from 0 to 84.

Maximum	2023-03-31
Decile 9	2021-05-12
Decile 8	2019-05-05
Decile 7	2017-07-04
Decile 6	2015-07-14
Median	2013-05-28
Decile 4	2011-01-28
Decile 3	2008-06-17
Decile 2	2005-04-18
Decile 1	2001-06-05
Minimum	1992-03-31

There are 10190 distinct values.
Mean = 2012-05-18

Notes

This field provides, for each participant, the date each ICD-10 diagnosis code was first recorded in the primary/main position in the participant's hospital inpatient records (in the field DIAG_ICD10 in the HESIN_DIAG table).

The date given is the episode start date (the EPISTART field on the HESIN table), or if this was missing the admission date (the ADMIDATE field on the HESIN table). See the Inpatient data Dictionary (Resource 141140) in Category 2000 for information about the HESIN and HESIN_DIAG tables.

The corresponding primary/main ICD10 diagnosis codes can be found in Field 41202 and the two fields can be linked using the array structure.

1 Related Data-Field

Field ID	Description	Relationship
41202	Diagnoses - main ICD10	Current Field is the date of first diagnosis of Field 41202

0 Resources

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