LS variable metadata
Variable: MLCAA1IM
Table: IDFI
Short description: ICD8/9 Alpha code for 1st multiple cause of death
Full description: Applies to MLCAA1IM, MLCAT1IM, MLC41DIM and DUR1DIM.
Coding notes: Alpha codes comprising A, B, C, M, Z, '(' or Space indicating the position on the death draft of the immediately-following multiple cause code '(' indicates that the immediately-following multiple cause code provides additional information about the previous multiple cause code M = the immediately-following multiple cause code is a Morphology code for the previous multiple cause code (applies to 1979 - 1982 registrations) A = the immediately-following multiple cause code is taken from line Ia of the death draft B = the immediately-following multiple cause code is taken from line Ib of the death draft C = the immediately-following multiple cause code is taken from line Ic of the death draft Z = the immediately-following multiple cause code is taken from line II of the death draft Space = alpha code taken to be the same as that of the previous multiple cause code Note: 1 'A' is always the first prefix 2 'A', 'B', 'C' and 'Z' prefixes appear only once and in the order shown, although they need not all be present 3
For 1979-1982 registrations 'M' prefixes can appear any number of times per record but must be immediately preceded by a code with a prefix of other than 'M'. Two 'M' prefixes cannot be together 4 Space and '(' prefixes can appear any number of times after one of the alpha prefixes, e.g. A,Space,(,(,B,M,Space 5
For 1979-1982 registrations the code immediately prior to an 'M' prefix will be a Chapter 2 cancer code (ICD 1400-2394). Although an 'M' code always requires a preceding cancer code, a cancer code does not always require a following 'M' code.
Notes:  
Units of measurement:  
Source: Draft death entry (Form 310) Question 8
Former name of variable: MLCAANDIM
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: 2
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).