Centers for Medicare & Medicaid Services — Main website for all Medicare states, This website has great information for fees, RVUs, appeal info, billing questions, and other modifier guidelines. Good source of medical billing information.

Texas Medicare Program This is a helpful Texas Site for medicare.

Texas Medicaid Program This is the Texas Site for medicaid.

eCare® Online line is a powerful resource designed to assist healthcare professionals with a wide range of everyday administrative tasks.

Flash Code Free ICD coding