Table 9.
Differences in Disease Capture by Rank for ICD-9-CM and ICD-10-CM for Causes of Mortality: Cerebrovascular Disease
| Disease Related to Mortality: Cerebrovascular Disease | ICD-9-CM Rank | ICD-10-CM Rank | Explanation |
| Subarachnoid hemorrhage | 3 | 5 | I-10 much more specific with many more codes |
| Intracerebral hemorrhage | 3 | 5 | I-10 much more specific with many more codes |
| Other intracranial hemorrhage | 3 | 5 | I-10 more specific with more codes |
| Cerebral infarction | 3 | 5 | Difficult to do code- to- code comparison since I-10 categories are different but I-10 much more specific |
| Occlusion and stenosis for precerebral arteries not resulting in cerebral infarction | 2 | 5 | I-10 more specific with categories differentiating between right and left side etc. |
| Occlusion and stenosis for precerebral arteries resulting in cerebral infarction | 2 | 5 | I-10 more specific with categories differentiating between right and left side etc. |
| Occlusion and stenosis for precerebral arteries right, left, bilateral | 2 | 5 | I-10 more specific with categories differentiating between right and left side etc. |
| Cerebrovascular disorders in diseases classified elsewhere | 1 | 5 | Captured only by I-10 |
| Sequelae of cerebrovascular disease | 3 | 5 | I-10 differentiates between non-traumatic, hemorrhages etc. while I-9 puts all CVAs together |
5= Diagnosis is fully captured by the code/codes
4=Diagnosis is almost fully captured by the code/codes
3=Diagnosis is partially captured by the code/codes
2=Diagnosis is less than partially captured by the code/codes
1=Diagnosis is not captured by the code/codes