ICD 9 to ICD 10 Bridge Coding

1
ICD 9 to ICD 10 Bridge Coding

• Pnina Zadka, Naama Rotem Batja Halperin
• Central Bureau of Statistics
• Jerusalem, Israel

2
Matrix Results Comparison

• Based on 1552 deaths for 1997 in Israel
• All deaths assigned an injury / external cause
  as the underlying cause of death

3
Reservations

• Small number of deaths
• Two different coders inter coder bias
• Coding punching mistakes

4
Unintentional Injuries

• Full agreement in both revisions
• Drowning
• Fire / flame
• Motor vehicle accidents (total)
• Poisoning
• Struck by
• Unspecified mechanism

5
Unintentional Injuries

• Unintentional Falls (ICD 9)
• 25 coded as undetermined falls under ICD 10
• 25 underlying cause of death a disease
• 50 Agreement between the two classifications

6
Unintentional (cont.)

• Unintentional Suffocation
• 40 Underlying causes a disease
• 60 Agreement

7
Self inflicted injury

• Full agreement
• Cut / pierce
• Drowning
• Fall
• Fire / flame
• Firearm

• MVA
• Poisoning
• Unspecified

8
Self inflicted (cont.)

• Suffocation
• 25 Undetermined hanging
• 73 Agreement

9
Assault

• Full agreement on Intent and mechanism

10
Undetermined intent injury

• Full agreement
• Cut pierce
• Firearm
• Suffocation

11
Undetermined intent (cont.)

• Drowning
• 20 Accidental drowning
• Fall
• 30 Accidental Fall
• Fire / flame
• 20 Accidental fire

12
Undetermined intent (cont.)

• Poisoning
• 20 Therapeutic misadventure
• 20 disease
• Unspecified
• 10 Disease therapeutic

13
Other specified

• Under both classification all cases in Israel
• A special addition to ICD -
• terror action
• 20 deaths in 1997

14
Summary

• Mechanism remains stable
• Differences in the rules for the attribution of
  unspecified intent for certain mechanisms