LS variable metadata
Variable: MLC41DIM
Table: IDFI
Short description: ICD8/9 four-digit cause code for 1st multiple cause of death
Full description:  
Coding notes: A,B,C,M,Z,Space
1971-1975, May 1981-1984 & 1987 onwards:
Blank
1976-1978:
Alpha codes A,B,C,Z, Space used with: ICD codes 000-799,'E' codes 800-999 or Death 'N' codes 800-999 Alpha code '(' used with: ICD codes 000-799 or ICD 'E' codes 800-999 or special ONS Deaths multiple codes First 3 digits Numeric, fourth digit numeric or '-' See Events Appendix 2
1979-1981:
Alpha codes A,B,C,M,Z,Space used with: ICD codes 001-999, ICD 'E' codes 800-999 Alpha code '(' used with: ICD codes 001-999 or ICD 'E' codes 800-999 or special ONS Deaths multiple codes Alpha code M used with: ICD Morphology codes 8000-9970 First three digits numeric, fourth digit numeric or '-' See Events Appendix 2 and 4b
1985:
Alpha codes A,B,C,Z,Space used with: ICD codes 001-999(preceded by Blank in characters 146,153 etc), ICD 'E' codes 800-999 (preceded by 'E' in characters 146,153 etc) ONS 'X' codes 7983-7988, 7995 (preceded by 'X' in characters 146,153 etc) First three digits numeric, fourth digit numeric or '-' See Events Appendix 4
Notes:  
Units of measurement:  
Source: Draft death entry (Form 310) Question 8. This is a four-digit code made up of a letter followed by the 3-digit ICD code.
Former name of variable: MLCA4NDIM
Derived: N
Derivation: Not available
Subject:  
Date range:  
Keyword: Mortality
Classification:  
Comparable variables for other individuals:  
Comparable variables for other times:  
Restricted: N
Data type: Text
Length of field: 4
Reference 1: See LS Technical Volume (Hattersley and Creeser, 1995), page 343 (death registration draft entry form), page 25 and page 96 (general details), pp. 99-104 (comparability), pp. 141-145 (data quality).
Reference 2: Events Appendix 2
Reference 3: Events Appendix 2