Here are some useful definitions of terms and acronyms related to health insurance, from Medicare and Medi-Cal to HMOs, PPOs, HIPAA compliance and more.

Authorization

Approval from your primary care physician and your health plan (depending on the plan's specifications) before receiving health care services such as visiting a specialist, getting a radiology scan, or undergoing a surgical procedure.

Claim

A request for payment for services and benefits you received.