Errors in medical billing can lead to claim denials, payment delays, or even compliance risks. Common issues include incorrect patient information, wrong diagnosis or procedure codes, duplicate billing, and failing to verify insurance. These mistakes may seem small but can significantly impact revenue and trust. The best prevention? Use reliable billing software, regularly train staff on the latest coding updates, and implement double-check systems. It’s also helpful to run regular audits to catch mistakes early. In short, accuracy and attention to detail are the keys to preventing costly errors. Efficient billing isn’t just about speed — it’s about getting it right the first time.