A medical claims examiner's primary roles involve reviewing and verifying health insurance claims for accuracy, completeness, and conformity with the plan's policies and procedures. They must also research and resolve any discrepancies in the claim data, such as missing information, incorrect codes, or duplicate charges. Additionally, they must ascertain the claimant's eligibility and coverage, apply the applicable deductibles, copayments, coinsurance, and other adjustments, authorize or reject payments for the claims, and generate explanation of benefits (EOB) statements or denial letters. Furthermore, they must communicate with health care providers, policyholders, and other parties to answer questions or explain the claim status or decision. Additionally, they must maintain accurate records of the claim files and update the claim system with relevant information. It is also important that they adhere to federal, state, and industry laws and regulations regarding health insurance and privacy.