Following initial Medicare certification for parenteral nutrition, after what length of time is recertification required?

• A. 1 year
• B. 6 months
• C. 1 month
• D. Never

Answer: (B)

Ongoing credentialing cadence is being tested here. After the initial Medicare certification for parenteral nutrition, recertification is required every six months. This semiannual interval reflects the need to keep clinicians up-to-date on PN practices, safety monitoring, and regulatory updates in a high-risk therapy, ensuring ongoing competency. A year between recertifications would delay renewal of essential knowledge, a month would be overly frequent for routine recertification, and never would imply no follow-up was needed.