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MM.04.036 Direct Acting Antiviral Medications for PDF

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Direct Acting Antiviral Medications for Treatment of Hepatitis C ____________________________________________________________________________________ Policy Number: Original Effective Date: MM.04.036 06/01/2015 Lines of Business: Current Effective Date: HMO; PPO; QUEST Integration 06/01/2015 Section: Prescription Drugs Place(s) of Service: Office; Outpatient I. Description The diagnosis of chronic hepatitis C virus (HCV) infection is based on the presence of both anti-HCV antibodies, detected by enzyme immunoassays, and HCV RNA, detected by molecular amplification (polymerase chain reaction). HCV RNA can be detected in blood within one to three weeks after exposure, and anti-HCV seroconversion occurs by eight to nine weeks. Progression of chronic hepatitis C infection to end stage liver disease most commonly occurs over several decades. Early in the course of infection, serum levels or liver-related enzymes, such as alanine aminotransferase, aspartate aminotransferase, and y-glutamyltranspeptidase may be elevated but there are no signs of liver dysfunction. As the disease progresses, signs of liver fibrosis may develop and fibrosis will often progress to cirrhosis. However, many patients may go decades or a lifetime without substantial liver damage. Early damage to the liver (including fibrosis) is generally reversible, while cirrhosis may not be reversible. Disease progression is accelerated in the presence of co-factors such as alcohol consumption, diabetes mellitus, older age at acquisition, HIV co-infection, and co-infection with other hepatic viruses. An assessment of the severity of hepatic fibrosis is important for treatment and prognosis of chronic HCV infection. A variety of fibrosis scoring systems are available that gauge the degree of hepatic fibrosis with either direct observation of fibrosis through liver biopsy or noninvasive measurement of a biological correlate of hepatic fibrosis (see Appendix A). The METAVIR fibrosis scoring system is the most commonly used method to stage and grade hepatic fibrosis and it assigns a score from F0 to F4 based on a liver biopsy. Several blood tests that detect serological markers of hepatic fibrosis also produce scores that can be staged to estimate degree of fibrosis (e.g., HepaScore, FibroSure, FibroSpect II). Another group of tests involve radiological imaging to measure qualities about the liver without an invasive surgery and include magnetic resonance elastography (MRE), ultrasound transient elastography (e.g., FibroScan), and acoustic radiation force impulse imaging (ARFI; e.g., Acuson S2000). Direct Acting Antiviral Medications for Treatment of Hepatitis C 2 Direct acting antiviral (DAA) medications for hepatitis C specifically target proteins involved in the HCV life cycle and disrupt viral replication. In patients with chronic hepatitis C, these medications offer the potential to improve cure rates with lower toxicity compared to treatment regimens that do not include DAAs. DAA Medications for the Treatment of Hepatitis C Simeprevir (Olysio) is indicated as a combination treatment with sofosbuvir-containing regimens and with or without ribavirin (RBV) in HCV genotype 1 infected patients with compensated liver disease (including cirrhosis). Refer to Appendix B for the U.S. Food and Drug Administration (FDA)- approved treatment regimen for Olysio. Sofosbuvir (Sovaldi) is indicated for the treatment of HCV infection as a component of a combination antiviral treatment regimen. The efficacy of sofosbuvir has been established in patients with HCV genotype 1, 2, 3 or 4 infection, including those with hepatocellular carcinoma meeting Milan criteria (awaiting liver transplantation) (refer to Appendix C) and those with HCV/HIV-1 co-infection. Results from early small-scale research suggest that combination antiviral treatments containing sofosbuvir may be effective in treating patients with HCV genotype 5 or 6 infection. Refer to Appendix D for the FDA-approved treatment regimen for Sovaldi. Ledipasvir/Sofosbuvir (Harvoni) is the first all-oral, interferon (IFN)-free regimen and is indicated for the treatment of HCV genotype 1 infected patients. Results from early small-scale research suggest that ledipasvir/sofosbuvir may be an effective treatment for patients with HCV genotype 4 or 6 infection. Refer to Appendix E for the FDA-approved treatment regimen for Harvoni. Ombitasvir/Paritaprevir/Ritonavir/Dasabuvir (Viekira Pak) is indicated for the treatment of HCV genotype 1 infected patients, including those with cirrhosis. Results from early research suggest that administration of the once-daily ombitasvir/paritaprevir/ritonavir tablet with or without ribavirin may be an effective treatment for patients with HCV genotype 4 infection. Refer to Appendix F for the FDA-approved treatment regimen for Viekira Pak. Prioritizing Patients to Receive Treatment for Chronic Hepatitis C The combined American Association for the Study of Liver Diseases (AASLD) and Infectious Diseases Society of America (IDSA) guidelines for the treatment of chronic hepatitis C are available at http://www.hcvguidelines.org/. These guidelines are updated frequently, so providers should check them periodically for the most up to date recommendations for patient care. The recommendations in these guidelines are a valuable resource for this policy but do not alone form a basis for approval of a particular course of treatment. II. Criteria/Guidelines A. DAA medications are covered for the treatment of HCV infection (subject to Limitations and Administrative Guidelines) when all of the following criteria are met: Direct Acting Antiviral Medications for Treatment of Hepatitis C 3 1. The patient is at least 18 years of age; 2. The patient is infected with an HCV genotype (and subtype, when applicable) for which the treatment being sought is indicated (refer to Appendix G); 3. The prescribing physician attests that the patient is at low risk for noncompliance with the treatment regimen; 4. The patient has an HCV RNA positive diagnosis documented by a quantitative titer obtained within the previous three months; 5. The patient has no history of alcohol or substance abuse within the six months prior to treatment; 6. The patient has at least one of the following: a. Liver biopsy with a METAVIR stage of F3 or F4; b. Transient elastography (FibroScan) score greater than or equal to 9.5 kPa; c. FibroTest (e.g., FibroSure) score of greater than or equal to 0.58; d. Score from another blood test that detects serological markers of hepatic fibrosis that is equivalent to METAVIR stage F3 or F4; e. Radiological imaging consistent with cirrhosis (e.g., evidence of portal hypertension); f. Ascites; g. Esophageal varices; or h. Serious extrahepatic manifestations of hepatitis C, such as cryoglobulinemia. 7. The medication is being prescribed by, or in consultation with, one of the following specialists: a. Hepatologist; b. Gastroenterologist; or c. Infectious Disease Specialist. 8. The patient agrees to the following: a. 100% medication compliance; b. Regular follow-up with specialty pharmacist or treating provider; c. No alcohol or illicit drug use during the course of treatment; d. Drug testing, when recommended by the treating provider; and e. Blood draws to measure HCV RNA, when ordered. 9. Treatment is in accordance with FDA approved treatment regimens unless otherwise noted in Appendix G. B. DAA medications are covered for the treatment of HCV infection (subject to Limitations and Administrative Guidelines) regardless of the degree of liver fibrosis when the above criteria (A.1-5, 7-9) are met for health care workers who are HCV positive and, because they perform invasive procedures, are at significant risk of transmitting the infection to patients. C. Patients in whom previous treatment has failed (i.e., relapse, non-response, partial response) may be retreated (subject to Limitations and Administrative Guidelines). Relapse is defined as the reappearance of HCV RNA in plasma after being undetectable at completion of therapy. Non-response is defined as a less than 2 logarithm reduction in HCV RNA after completion of a course of therapy. Partial response is defined as at least a 2 logarithm reduction in HCV RNA during treatment, but a detectable level of HCV RNA at the end of the course of treatment. Only patients who experienced prior treatment failure in the following situations may be eligible for retreatment: Direct Acting Antiviral Medications for Treatment of Hepatitis C 4 1. Patients in whom a previous interferon and ribavirin regimen has failed may be retreated according to the appropriate section of Table 2 in Appendix G. 2. Patients in whom a previous sofosbuvir-containing regimen has failed may be retreated based on their current fibrosis level: a. For those without advanced fibrosis, retreatment is considered not medically necessary. These patients should defer antiviral therapy pending additional data or consider treatment within a clinical trial setting; b. For those with advanced fibrosis, treatment with ledipasvir/sofosbuvir with or without ribavirin for 24 weeks may be considered medically necessary. 3. Patients infected with HCV genotype 1, in whom a previous protease inhibitor with interferon and ribavirin regimen has failed may be retreated based on the presence of cirrhosis: a. For those without cirrhosis, treatment with ledipasvir/sofosbuvir for 12 weeks may be considered medically necessary; b. For those with cirrhosis, treatment with ledipasvir/sofosbuvir either without ribavirin for 24 weeks or with ribavirin for 12 weeks may be considered medically necessary. III. Limitations A. Treatment of HCV with DAA medication is not covered when any of the criteria specified above (II.A-C) are not met. B. Treatment may be contraindicated in individuals when any of the following indications are present: 1. Known hypersensitivity or allergy to drugs used to treat hepatitis C; or 2. Decompensated liver disease as defined by Child-Pugh score greater than 6 (refer to Appendix H). However, patients with a Child-Pugh score greater than 6 who are active candidates for liver transplantation may qualify for treatment with sofosbuvir or ledipasvir/sofosbuvir (subject to Criteria/Guidelines, Limitations, and Administrative Guidelines). C. Treatment of HCV with sofosbuvir or ledipasvir/sofosbuvir may be contraindicated when any of the following indications are present: 1. Hepatocellular carcinoma except for patients who are active candidates for liver transplantation, including meeting Milan criteria; or 2. Glomerular filtration rate (GFR) is less than 30. D. Treatment of HCV with sofosbuvir may be contraindicated in individuals who have received a solid organ transplant other than a liver transplant. Antiviral therapy following liver transplantation should be undertaken with caution and performed under the supervision of a physician experienced in transplantation. E. Treatment of HCV with ombitasvir/paritaprevir/ritonavir/dasabuvir may be contraindicated in individuals who are taking drugs that have any of the following qualities: 1. Highly dependent on CYP3A for clearance; 2. Strong inducers of CYP3A and CYP2C8; or 3. Strong inhibitors of CYP2C8. F. Repeat treatments in any of the following situations will not be covered: Direct Acting Antiviral Medications for Treatment of Hepatitis C 5 1. Inadequate compliance resulting in failure to achieve sustained viral response (SVR); 2. Reinfection; 3. Discontinuation of treatment secondary to harmful alcohol and/or drug abuse; or 4. A prior treatment failure when there is no recognized, effective retreatment regimen. G. The plan will not cover replacement medication for pills that are lost or stolen. IV. Administrative Guidelines A. Precertification is required for the initial eight weeks of treatment with sofosbuvir, ledipasvir/sofosbuvir, or ombitasvir/paritaprevir/ritonavir/dasabuvir. To precertify, contact CVS Specialty Guideline Management (SGM) at (808) 254-4414. Precertification is required for continuation of treatment in a maximum of eight week increments. B. Ledipasvir/sofosbuvir or a sofosbuvir-containing regimen is the preferred treatment for hepatitis C. Treatment of HCV with ombitasvir/paritaprevir/ritonavir/dasabuvir is non-preferred and may be covered (subject to Limitations and Administrative Guidelines) only in certain situations, including but not limited to: 1. Treatment with ledipasvir/sofosbuvir or sofosbuvir is contraindicated because of adverse effects, harmful drug interaction, allergy to the drugs, or treatment failure; 2. Scientific evidence demonstrates that ombitasvir/paritaprevir/ritonavir/dasabuvir is a more effective treatment for the patient’s specific condition; 3. A recognized professional society recommends treatment with ombitasvir/paritaprevir/ritonavir/dasabuvir for the patient’s specific condition. C. The following medical record documentation, as applicable to the patient, must be submitted with the initial precertification request: 1. Written treatment plan from the requesting provider; and 2. Documentation that the member has been assessed for potential non-adherence to treatment regimen. D. A specialty pharmacy will dispense no more than 28 days of medication at one time. E. The HMSA Hepatitis C Treatment Checklist can be found in Appendix I. This checklist, completed and signed by the patient, is required prior to initiation of treatment. F. This policy is not applicable to Akamai Advantage members. G. It is recommended that an HCV RNA test be performed 4 weeks after the initiation of treatment and that treatment be discontinued if HCV RNA results are greater than 25 IU/mL and patient has been observed to be noncompliant. V. Scientific Background First-Generation Direct Acting Antivirals (DAA) The first-generation DAAs, boceprevir and telaprevir, have demonstrated superior SVR compared to standard therapy with interferon/ribavirin. Treatment response, defined as an SVR at 12 or 24 weeks, was achieved in the 60% to 80% range across various trials of boceprevir and telaprevir. Adverse events (AEs) occur at a relatively high rate with these agents. Serious adverse events (SAEs) can involve skin reactions, and hematologic abnormalities such as anemia, thrombocytopenia, and leukopenia. Direct Acting Antiviral Medications for Treatment of Hepatitis C 6 Second-Generation Protease Inhibitors The second-generation protease inhibitor, simeprevir, has demonstrated superior SVR compared with standard regimens of interferon/ribavirin. In pooled analysis of two similar trials, the SVR was 80%, and in a third trial the SVR was 79%. AEs occurred at rates higher than placebo for skin reactions, hyperbilirubinemia, and dyspnea. Compared with first-generation protease inhibitors, response rates for simeprevir may be higher and AEs rates lower; however, direct comparisons on the two medications are not available. NS5B RNA Polymerase Inhibitors Sofosbuvir is currently the only FDA approved NS5B RNA polymerase inhibitor. The evidence on this medication comes from a mix of randomized and nonrandomized trials. The range of SVR12 in these studies is from 67% to 97%, with several trials reporting SVR rates that are higher than with other DAAs. The safety profile of sofosbuvir is favorable compared with other DAAs. However, there are no direct comparisons of sofosbuvir to other DAAs. SAEs were uncommon in the trials, and serious hematologic abnormalities occurred in four percent or less of patients. Combination Medications On October 10, 2014, ledipasvir/sofosbuvir became the first combination treatment to receive FDA approval. Results from the trials of this drug report very high response rates—in the range of 94% to 99%. On December 19, 2014 ombitasvir/paritaprevir/ritonavir/dasabuvir was approved by the FDA and became the only FDA approved regimen that contains three distinct mechanisms of action. It consists of the fixed-dose combination of ombitasvir 25mg (an NS5A inhibitor), paritaprevir 150mg (an NS3/4A protease inhibitor), and ritonavir 100mg (an approved HIV-1 protease inhibitor), dosed once daily with a meal, and dasabuvir 250mg (a non-nucleoside NS5B polymerase inhibitor), dosed twice daily with a meal. Ombitasvir/paritaprevir/ritonavir/dasabuvir is taken for 12 weeks, except in certain patients with genotype 1a and cirrhosis, who should take it for 24 weeks. Ribavirin should be co-administered in patients with genotype 1a, and in all patients who have cirrhosis or who have received a liver transplant. There is no direct evidence comparing outcomes of immediate versus delayed treatment with DAAs. However, the degree of treatment benefit, and the implications of delaying treatment, can be inferred from knowledge of the natural history of hepatitis C. The long interval between chronic hepatitis C infection and the development of irreversible cirrhosis implies that patients will not be harmed by a delay of treatment if they have an early stage of the disease and treatment is initiated before the development of irreversible liver damage. For patients with cirrhosis or who are at high risk for progression to cirrhosis in the near future, immediate treatment is indicated and delay of treatment may result in worse outcomes. Other patients who should be treated without delay include those with serious extrahepatic manifestations of hepatitis C and those with hepatocellular carcinoma awaiting transplant. Summary The availability of direct acting antiviral medications (DAAs) represent a major advancement in the treatment of hepatitis C, with the potential to dramatically improve cure rates with less toxicity compared to standard treatment without DAAs. All of the DAAs that are currently FDA approved Direct Acting Antiviral Medications for Treatment of Hepatitis C 7 have demonstrated treatment responses that are superior to standard care consisting of interferon and ribavirin. Direct comparisons of the different agents are lacking, but differences in treatment response and adverse effects are reported. The first-generation protease inhibitors, boceprevir and telaprevir, have response rates in the 60% to 80% range and have a relatively high incidence of serious adverse effects. The second-generation protease inhibitor, simeprevir, offers an improved risk/benefit ratio, and treatment with the RNA polymerase inhibitor, sofosbuvir, has resulted in higher response rates and less toxicity than any of the other available agents. The newest DAA treatment, ombitasvir/paritaprevir/ritonavir/dasabuvir, is also very effective in HCV treatment. There is no direct evidence on immediate versus delayed treatment, but based on the natural history of the disease, it is reasonable to conclude that some patients can delay treatment without suffering adverse outcomes. These are generally patients with no fibrosis or early fibrosis. Outcomes will not be adversely impacted if these patients have close monitoring and if treatment is instituted prior to the onset of irreversible liver damage. For patients with more advanced disease, immediate treatment should be given to avoid progression of irreversible liver damage. Other patients who should be treated without delay include patients with serious extrahepatic manifestations of hepatitis C and patients with hepatocellular carcinoma awaiting transplant. Based on the available evidence, treatment with DAAs for patients with chronic hepatitis C infection may be considered medically necessary. For patients with early disease, either immediate or delayed treatment may be considered medically necessary. For patients with advanced disease, patients with serious extrahepatic manifestations, and patients with hepatocellular carcinoma awaiting transplant, only immediate treatment may be considered medically necessary. Various professional societies, governmental agencies and health plans have developed policies and treatment regimens for HCV. Those of the Department of Veterans Affairs, American Association for the Study of Liver Diseases, European Association for the Study of the Liver, and others can be found in the References section. As research is constantly being conducted in this field, this policy may not reflect the latest recommendations of the above associations, societies and agencies. VI. Important Reminder The purpose of this Medical Policy is to provide a guide to coverage. This Medical Policy is not intended to dictate to providers how to practice medicine. Nothing in this Medical Policy is intended to discourage or prohibit providing other medical advice or treatment deemed appropriate by the treating physician. Benefit determinations are subject to applicable member contract language. To the extent there are any conflicts between these guidelines and the contract language, the contract language will control. This Medical Policy has been developed through consideration of the medical necessity criteria under Hawaii’s Patients’ Bill of Rights and Responsibilities Act (Hawaii Revised Statutes §432E-1.4), generally accepted standards of medical practice and review of medical literature and government Direct Acting Antiviral Medications for Treatment of Hepatitis C 8 approval status. HMSA has determined that services not covered under this Medical Policy will not be medically necessary under Hawaii law in most cases. If a treating physician disagrees with HMSA’s determination as to medical necessity in a given case, the physician may request that HMSA reconsider the application of the medical necessity criteria to the case at issue in light of any supporting documentation. VII. References 1. AASLD/IDSA/IAS–USA. Recommendations for testing, managing, and treating hepatitis C. http://www.hcvguidelines.org. Accessed April 7, 2015. 2. BCBSA. Medical Policy Reference Manual. Direct Acting Antiviral Medications for Treatment of Chronic Hepatitis C #5.01.25. Last reviewed June 2014. 3. Anthem. Clinical UM Guideline. Hepatitis C Pegylated Interferon Antiviral Therapy CG-DRUG- 07. Last reviewed February 5, 2015. 4. European Association for the Study of the Liver. EASL Clinical Practice Guidelines: Management of hepatitis C virus infection. J Hepatol 2014; 60:392-420. 5. The French METAVIR Cooperative Study Group. Intraobserver and interobserver variations in liver biopsy interpretation in patients with chronic hepatitis C. Hepatology 1994; 20(1 Pt 1):15- 20. 6. Department of Veterans Affairs. Treatment considerations from the Department of Veterans Affairs National Hepatitis C Resource Center and the Office of Public Health. Revised February 17, 2015. Available online at: http://www.hepatitis.va.gov/pdf/treatment-considerations- 2015-02.pdf. Last accessed April 7, 2015. 7. Johnson & Johnson, Inc. Olysio (simeprevir) capsules, for oral use. Prescribing information. 11/2014. 8. Gilead Sciences. Sovaldi (sofosbuvir tablets, for oral use. Prescribing information. 3/2015. 9. Gilead Sciences, Inc. Harvoni (ledipasvir and sofosbuvir) tablets, for oral use. Prescribing information. 3/2015. 10. AbbVie, Inc. Viekira Pak (ombitasvir, paritaprevir, and ritonavir tablets; dasabuvir tablets), co- packaged for oral use. Prescribing information. 3/2015. 11. Baranova A, Lal P, Birerdinc A, Younossi M. Non-Invasive markers for hepatic fibrosis. BMC Gastroenterology, 2011; 11(91): 15. 12. Mayo Clinic. Hepatitis C Virus (HCV) FibroSURE. LabCorp Burlington. Accessed April 10, 2015. 13. Nudo CG, Jeffers LJ, Bejarano PA, Servin-Abad LA, Leibovici Z, De Medina M, et al. Correlation of laparoscopic liver biopsy to elasticity measurements (FibroScan) in patients with chronic liver disease. Gastroenterology & Hepatology, 2008; 4(12): 862-870. Direct Acting Antiviral Medications for Treatment of Hepatitis C 9 Appendix A Meta-analysis of Histological Data in Viral Hepatitis (METAVIR) Table 1 METAVIR Fibrosis Stage 0 No fibrosis 1 Portal fibrosis without septa (bridges) 2 Portal fibrosis with septa (bridges) 3 Numerous septa without cirrhosis 4 Cirrhosis * Baranova A et al. Non-Invasive markers for hepatic fibrosis. BMC Gastroenterology, 2011; 11(91). FibroSure Score Ranges Table 2 Comparison Between FibroSure Score and METAVIR Stage FibroSure Score METAVIR Stage Equivalent < 0.21 Stage F0 0.21 – 0.27 Stage F0 – F1 0.27 – 0.31 Stage F1 0.31 – 0.48 Stage F1 – F2 0.48 – 0.58 Stage F2 0.58 – 0.72 Stage F3 0.72 – 0.74 Stage F3 – F4 > 0.74 Stage F4 * Mayo Clinic. Hepatitis C Virus (HCV) FibroSURE. LabCorp Burlington. Accessed April 10, 2015. Transient Elastography Cutoff Values Table 3 Comparison Between FibroScan Measurement and METAVIR Stage FibroScan Measurement (kPa) METAVIR Stage Equivalent 7.0 Stage F2 9.5 Stage F3 11.8 Stage F4 * Nudo CG et al. Correlation of laparoscopic liver biopsy to elasticity measurements (FibroScan) in patients with chronic liver disease. Gastroenterology & Hepatology, 2008; 4(12): 862-870. Direct Acting Antiviral Medications for Treatment of Hepatitis C 10 Appendix B FDA Approved Treatment Regimen for Olysio (Simeprevir) The recommended dose of simeprevir is one 150 mg tablet, taken orally, once daily with food. Simeprevir should be administered in combination with peginterferon alfa and ribavirin or in combination with sofosbuvir for the treatment of chronic hepatitis C (CHC) in adults. The recommended regimen and treatment duration for simeprevir, peginterferon alfa, and ribavirin combination therapy is provided in Table 1. The recommended regimen and treatment duration for simeprevir and sofosbuvir combination therapy is provided in Table 2. Table 1 Recommended Regimens and Treatment Duration for Simeprevir, Peginterferon Alfa, and Ribavirin Combination Therapy for Treatment of CHC Infection Patient Population Treatment Regimen and Duration Treatment-naïve patients 12 weeks of simeprevir + peginterferon alfa + ribavirin, followed by and prior relapsers* an additional 12 weeks of peginterferon + ribavirin (total treatment duration of 24 weeks)◊ Prior non-responders 12 weeks of simeprevir + peginterferon alfa + ribavirin, followed by (including partial‡ and non- an additional 36 weeks of peginterferon alfa + ribavirin (total responders§) treatment duration of 48 weeks)◊ * Prior relapse: HCV RNA not detected at the end of prior interferon-based therapy and HCV RNA detected during follow-up. ◊ Recommended duration of treatment if patient does not meet stopping rules (see Table 3). ‡ Prior partial responder: prior on-treatment ≥ 2 log IU/mL reduction in HCV RNA from baseline at 10 Week 12 and HCV RNA detected at end of prior interferon-based therapy. § Prior non-responder: prior on-treatment < 2 log reduction in HCV RNA from baseline at Week 12 10 during prior interferon-based therapy. Table 2 Recommended Regimens and Treatment Duration for Simeprevir and Sofosbuvir Combination Therapy for Treatment of CHC Infection Patient Population Treatment Regimen Treatment Duration Treatment-naïve and treatment-experienced* simeprevir + sofosbuvir 12 weeks patients without cirrhosis Treatment-naïve and treatment-experienced* simeprevir + sofosbuvir 24 weeks patients with cirrhosis * Treatment-experienced patients include prior relapsers, prior partial responders, and prior non- responders who failed prior interferon-based therapy.

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Prescription Drugs Place(s) of Service: Office; Outpatient Direct acting antiviral (DAA) medications for hepatitis C specifically target proteins involved in the
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