Medicine: Non-Invasive Vascular Diagnostic Studies (medne …

According to one study, ICD-9 codes 434.XX and 436.XX have the best PPV with 85% and 77% of patients having a confirmed ischemic stroke, respectively.15 On the other hand, ICD-9 code 433.XX is often inaccurate with less than 2% of patients with this code having a valid acute stroke diagnosis.15 The study concluded that if investigators wish to ... ................
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