Table 3. The Positive Predictive Value of VTE Codes + Anticoagulant Prescriptions Compared to Medical Chart Review (n=1974).
Numbers in parentheses refer to the (number of chart confirmed VTE events/number of reviewed encounters with an ICD-9 code for VTE), excluding charts without available clinical documentation for review.
| Hospital/Emergency Department N=1451 |
Outpatient N=523 |
||
|---|---|---|---|
|
| |||
| Primary Position N=1080 |
Secondary Position N=371 |
||
|
|
|||
| Any VTE code | 92.4% (998/1080) | 73.6% (273/371) | 75.5% (395/523) |
|
Pulmonary embolism codes 415.1x |
95.4% (617/647) | 84.8% (117/138) | 54.5% (55/101) |
|
Lower extremity DVT codes 451.1x, 451.2, 451.81, 453.4x, 453.5x |
89.6% (276/308) | 71.6% (83/116) | 89.7% (234/261) |
|
Upper extremity DVT codes 451.83, 451.84, 451.89, 453.72, 453.73, 453.74, 453.75, 453.76, 453.77, 453.82, 453.83, 453.84, 453.85, 453.86, 453.87 |
81.8% (9/11) | 55.2% (16/29) | 100% (2/2) |
|
Other venous thrombosis codes 451, 451.9, 452, 453, 453.0, 453.1, 453.2, 453.3, 453.79, 453.8, 453.89, 453.9 |
84.2% (96/114) | 64.8% (57/88) | 65.4% (104/159) |