Automation coding system on mortality in Japan

1
Automation coding system on mortality in Japan

• Moriyo Kimura, MD MPH
• ICD office
• Ministry of Health, Labour and Welfare, Japan

2
ACSEL

• Automated Coding of diagnostic expressions and
  SELection of underlying cause of death

3
Characteristics of ACSEL

1. ACSELs difficult, complicated Japanese
   processing ability.
2. Neoplasms automation processing in Phase II.

4
Data sheet
MHLW
OCR
Online Data handling
Dictionary Tables
Municipalities
Health Centres
registration
Manual data handling
Manual data handling
5
Data editing and phase I
6
Data editing
Difficult, Nasty Japanese
Data editing
PHASE?
PHASE?
? Topographical errors ? Space, hyphenation ?
Capitalization ? Kanji, Hiragana, Katakana
adjustment
7
Phase I
Data editing
Element file

Element analysis


PHASE?

Various file

PHASE?
Element editing

Element sorting

Dictionary file

Matching

Condition file

Confirmation

ICD coding

8
Phase?
Data editing
PHASE?
Table C

TUD




PHASE?
Table D



Modification rules

neoplasms




Table E


Trivial condition



Japanese rules

Table F

Domestic code

removal

UCD
9
Neoplasms
Data editing
1. Systematic automation coding adopting ICD-O
Example 1. a. Stomach cancer
b. pancreatic cancer ? C26.8 Example
2. a. small cell lung cancer
b. HCC ?
C97 2. Overcoming Linguistic complicity of
Japanese Example. ???? ? lung metastasis
???? ? metastatic lung cancer
PHASE?
PHASE?
10
Coding Accuracy
Total manual coding AC total
Agreement
990,736 73,683 917,049
869,362 (100) (7.4)
(92.6) (94.8)
2002 data
The data for manual coding was mainly the
external cause of death