Required Experience for Medical Billing Executive at BillingFreedom. Candidates should have 1-3 years of hands-on experience in medical billing, claims submission, denial management, and accounts receivable.. Proficiency in CPT, ICD-10, and HCPCS coding and expertise in EHR systems are essential.. Strong communication, problem-solving, and attention to detail are crucial for ensuring accurate billing and timely reimbursements.. Experience in dermatology or pediatric billing is a plus.