Comparison Of Out-Of-Pocket Cost Between Apixaban And Enoxaparin For Extended-Duration Venous Thromboembolism Prophylaxis In Gynecologic Oncology Patients

Objectives: To compare out-of-pocket cost between apixaban and enoxaparin for prevention of postoperative venous thromboembolism (VTE) in gynecologic oncology patients. Current guidelines recommend low molecular weight heparin for thromboprophylaxis following gynecologic cancer surgery, but new evidence suggests that oral apixaban may provide another safe and effective alternative. Recent publications have suggested apixaban more cost-effective, however these data do not evaluate out-of-pocket cost. Methods: This retrospective study was approved by the institutional QIAB. Patients undergoing open surgery for gynecologic malignancy qualified for this study. Test claims for apixaban 2.5 mg by mouth twice daily and enoxaparin 40 mg subcutaneously daily for 28 days were submitted for each patient prior to surgery. Patient copays, number of patients requiring prior authorization, and number of patients without prescription insurance were collected. Results: A total of 86 consecutive patients had test claims sent for both apixaban and enoxaparin thromboprophylaxis between July 2020 and October 2020. The average patient out-of-pocket cost to complete 28 days of apixaban prophylaxis was $73.95 (median $42.84, range $0-448.45). The average patient cost to complete 28 days of enoxaparin prophylaxis was $38.08 (median $10, range $0-260.91). Partial fills were allowed for 4 of 5 enoxaparin prescriptions that required prior authorization. A total of 5 apixaban prescriptions (5.8%) required prior authorization for full 28 days. A total of 5 patients (5.8 %) did not have prescription insurance. Cash price for enoxaparin was nearly double the cash price of apixaban. A total 6 patients’ (7 %) insurance was not contracted with our pharmacy. A single patient (1.2%) required enoxaparin via specialty pharmacy. A total of 2 patients (2.3 %) were enrolled in the institution's financial assistance per the institution. Conclusions: Patients prescribed extended-duration venous thromboembolism prophylaxis may face higher out-of-pocket costs with apixaban than with enoxaparin. Prior authorizations can often take 48 to 72 hours for approval. Sending test claims prior to surgery can help identify prescriptions that will need prior authorizations so prescriptions can be sent earlier to avoid discharge delays and patient nonadherence. There may not be a one size fits all solution and individualized patient care should be considered. Future research areas should evaluate patient adherence with a twice daily oral pill vs a once daily injection. To compare out-of-pocket cost between apixaban and enoxaparin for prevention of postoperative venous thromboembolism (VTE) in gynecologic oncology patients. Current guidelines recommend low molecular weight heparin for thromboprophylaxis following gynecologic cancer surgery, but new evidence suggests that oral apixaban may provide another safe and effective alternative. Recent publications have suggested apixaban more cost-effective, however these data do not evaluate out-of-pocket cost. This retrospective study was approved by the institutional QIAB. Patients undergoing open surgery for gynecologic malignancy qualified for this study. Test claims for apixaban 2.5 mg by mouth twice daily and enoxaparin 40 mg subcutaneously daily for 28 days were submitted for each patient prior to surgery. Patient copays, number of patients requiring prior authorization, and number of patients without prescription insurance were collected. A total of 86 consecutive patients had test claims sent for both apixaban and enoxaparin thromboprophylaxis between July 2020 and October 2020. The average patient out-of-pocket cost to complete 28 days of apixaban prophylaxis was $73.95 (median $42.84, range $0-448.45). The average patient cost to complete 28 days of enoxaparin prophylaxis was $38.08 (median $10, range $0-260.91). Partial fills were allowed for 4 of 5 enoxaparin prescriptions that required prior authorization. A total of 5 apixaban prescriptions (5.8%) required prior authorization for full 28 days. A total of 5 patients (5.8 %) did not have prescription insurance. Cash price for enoxaparin was nearly double the cash price of apixaban. A total 6 patients’ (7 %) insurance was not contracted with our pharmacy. A single patient (1.2%) required enoxaparin via specialty pharmacy. A total of 2 patients (2.3 %) were enrolled in the institution's financial assistance per the institution. Patients prescribed extended-duration venous thromboembolism prophylaxis may face higher out-of-pocket costs with apixaban than with enoxaparin. Prior authorizations can often take 48 to 72 hours for approval. Sending test claims prior to surgery can help identify prescriptions that will need prior authorizations so prescriptions can be sent earlier to avoid discharge delays and patient nonadherence. There may not be a one size fits all solution and individualized patient care should be considered. Future research areas should evaluate patient adherence with a twice daily oral pill vs a once daily injection.