Final answer:
Pre-certification is typically required for medical procedures to ensure they are necessary and covered under the patient's health insurance plan. It is not required for services like plumbing repairs, lawn maintenance, or interior decorating.
Step-by-step explanation:
Pre-certification, also known as prior authorization, is often required for medical procedures. This is a process where a health care provider must obtain approval from a health insurance company before performing certain medical services. It is intended to ensure that the procedures being recommended are medically necessary, within the scope of the patient's coverage, and aligned with cost containment policies. Plumbing repairs, lawn maintenance, and interior decorating generally do not require pre-certification as they are not typically covered under health insurance plans. The main goal of pre-certification in the healthcare industry is to prevent unnecessary medical procedures and control costs for both insurance companies and patients. It's not applicable to services that don't usually involve insurance coverage for health matters.