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Holiday schedule

Quest Diagnostics Patient Service Centers will have modified hours during the holiday season.

  • Closing early at 12:00pm on December 24, 2025
  • Closed on December 25, 2025
  • Closing early at 12:00pm on December 31, 2025
  • Closed on January 1, 2026


Have a healthy, happy holiday!

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Policies for Medicare Region JH Novitas

Arkansas, Colorado, Louisiana, Mississippi, New Mexico, Oklahoma, and Texas are covered under this policy. Jurisdiction is determined by the state in which your performing Quest lab is located.

Below, you’ll find a list of Medicare Coverage Policies for tests or test groups applicable to your state. Diagnosis codes are required for all Medicare orders to document medical necessity.

Click on the links below to find the associated diagnosis codes and frequency information within the policy for the test you want to order. Some links will provide a concise Medicare Coverage and Coding Guide for the coverage policy, while others will direct you to the CMS website policy page.

Non-covered ICD-10 codes apply to all lab National Coverage Determinations. See the PDF Reference Guide here.

For more information about how Quest can help you streamline your practice, download our Medicare coverage brochure.

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