Table 14.
Differences in Codes by Ranking for ICD-9-CM and ICD-10-CM for Public Health Diseases
| Public Health Categories | ICD-9-CM Rank (Mean) | ICD-10-CM Rank (Mean) | P value |
| External Causes*** (n=61, I- 9; n=70, I-10) | 4.85 | 2.98 | <0.001 |
| Alzheimer's (n=0) | N/A | N/A | N/A |
| Cerebrovascular (n=45, I-9; n=46, I-10) | 4.64 | 4.30 | 0.057 |
| Diabetes* (n=18 for both I-9 and I-10) | 5.00 | 4.56 | 0.037 |
| Influenza (n=0) | N/A | N/A | N/A |
| Lower respiratory disease*** (n=99, I-9; n=102, I-10) | 4.96 | 4.03 | <0.001 |
| Nephritis (n=3 for both I-9 and I-10) | 5.00 | 2.33 | 0.114 |
| Septicemia (n=0) | N/A | N/A | N/A |
| Heart disease*** (n=146, I-9;n=142, I-10) | 4.89 | 4.08 | <0.001 |
| Malignant neoplasms* (n=37 for both I-9 and I-10) | 4.78 | 4.27 | 0.012 |
| Other*** (n=350, I-9; n=367, I-10) | 4.81 | 4.01 | <0.001 |
P values determined by Mann Whitney U nonparametric test:
*Significan p<0.05
**High Significan p<0.01
***Very High Significan p<0.001
N/A – Too few cases n = number of codes and agreement rankings
Ranking for Agreement:
5 = All digits are captured by codes assigned
4 = One digit is different between the codes assigned
3 = Two digits are different between the codes assigned
2 = Three digits are different between the codes assigned
1 = >3 digits are different between the codes assigned