Medicare Coverage Determination Process

The deciding factor for whether Medicare will cover a treatment, service or item is if it can be considered medically necessary. This process includes a multi-step, nine-month evaluation of the requests for coverage, which can result in the creation of a national coverage determination.

Christian Simmons, writer and researcher for RetireGuide
  • Written by
    Christian Simmons

    Christian Simmons

    Financial Writer

    Christian Simmons is a writer for RetireGuide and a member of the Association for Financial Counseling & Planning Education (AFCPE®). He covers Medicare and important retirement topics. Christian is a former winner of a Florida Society of News Editors journalism contest and has written professionally since 2016.

    Read More
  • Edited By
    Lee Williams
    Lee Williams, senior editor for

    Lee Williams

    Senior Financial Editor

    Lee Williams is a professional writer, editor and content strategist with 10 years of professional experience working for global and nationally recognized brands. He has contributed to Forbes, The Huffington Post, SUCCESS Magazine,, Electric Literature and The Wall Street Journal. His career also includes ghostwriting for Fortune 500 CEOs and published authors.

    Read More
  • Reviewed By
    Joe Benish
    Joe Benish, Medicare Expert & RetireGuide Reviewer

    Joe Benish

    Licensed Agent at Insuractive

    As a licensed insurance agent specializing in providing seniors with Medicare-related products, Joe Benish knows how daunting it can be to learn about Medicare and all of the options available. That’s why he spends his time getting to know his clients and helping them select the right plans for them from the more than 15 insurance companies he represents.

    Read More
  • Published: July 7, 2021
  • Updated: November 1, 2022
  • 2 min read time
  • This page features 7 Cited Research Articles
Fact Checked
Fact Checked

A licensed insurance professional reviewed this page for accuracy and compliance with the CMS Medicare Communications and Marketing Guidelines (MCMGs) and Medicare Advantage (MA/MAPD) and/or Medicare Prescription Drug Plans (PDP) carriers’ guidelines.

Cite Us
How to Cite's Article

APA Simmons, C. (2022, November 1). Medicare Coverage Determination Process. Retrieved June 6, 2023, from

MLA Simmons, Christian. "Medicare Coverage Determination Process.", 1 Nov 2022,

Chicago Simmons, Christian. "Medicare Coverage Determination Process." Last modified November 1, 2022.

Why Trust
Why You Can Trust Us

Content created by RetireGuide and sponsored by our partners.

Key Principles

RetireGuide’s mission is to provide seniors with resources that will help them reach important financial decisions that affect their retirement. Our goal is to arm our readers with knowledge that will lead to a healthy and financially sound retirement.

We’re dedicated to providing thoroughly researched Medicare information that guides you toward making the best possible health decisions for you and your family.

RetireGuide LLC has partnerships with Senior Market Sales (SMS) and GoHealth.

Our partners are able to be reached through the phone numbers and/or forms provided on our website.

The content and tools created by RetireGuide adhere to strict Medicare and editorial guidelines to ensure quality and transparency.

Editorial Independence

While the experts from our partners are available to help you navigate various Medicare plans, RetireGuide retains complete editorial control over the information it publishes.

We operate independently from our partners, which allows the award-winning RetireGuide team to provide you with unbiased information.

Visitors can trust our inflexibility regarding our editorial autonomy. We do not allow our partnership to influence RetireGuide’s editorial content whatsoever.

What Is the Medicare Determination Process?

Original Medicare is meant to cover items, treatments and services that are medically necessary. A nine-month process determines the final decision. The first phase of the process lasts six months.

The First 6 Months of the Medicare National Coverage Process
  • Preliminary Discussions
  • Benefit Category
  • National Coverage Request
  • Staff Review
  • External Technology Assessment or Medicare Coverage Advisory Committee
  • Second Staff Review
  • Decision Posted

Determining Medicare coverage is a strict and exhaustive process. After the first six months, a potential determination enters its second phase of review.

This additional phase lasts three months, including one month that serves as a public comments phase.

Afterwards, two essential milestones occur in the next allotted 60 days: the completion of a final decision memorandum and an implementation plan for the new coverage guidelines.

The process would generally end there, but there is also a chance for a reconsideration phase before a final decision.

What is Reasonable and Necessary?

There are three qualifications that Medicare uses to determine if a treatment or service is medically necessary. Treatments, items or services must be:
  • Proven to be safe and effective
  • Non-experimental or non-investigational
  • Appropriate for Medicare patients

Original Medicare will cover anything that does not meet all three of these requirements.

Coverage is still possible through a Medicare Advantage plan. These plans, which private insurers provide, cover everything included in Original Medicare and additional benefits.

National Coverage Determinations (NCDs)

A national coverage determination (NCD) decides coverage for a treatment or service that applies to the entire nation. An NCD is also determined through a nine-month process.

If there is no NCD for a treatment, service or item that you want to receive coverage for, a formal request can be made to initiate the process.

Coverage could also be available through a local coverage determination even if there is not an NCD.

Local Coverage Determinations (LCDs)

A local coverage determination, which applies to a specific geographic area, can cover an item or service not included in an NCD.

An LCD cannot contradict or offer less coverage than an NCD but can include expanded coverage for a treatment or service.

Last Modified: November 1, 2022

7 Cited Research Articles

  1. U.S. Centers for Medicare & Medicaid Services. (2022, March 3). Medicare Coverage Determination Process. Retrieved from
  2. U.S. Centers for Medicare & Medicaid Services. (2022). Local Coverage Determinations. Retrieved from
  3. U.S. Centers for Medicare & Medicaid Services. (2022). Local Coverage Determinations (LCD) Challenge. Retrieved from
  4. American Hospital Association. (2021, January 13). CMS codifies definition of ‘reasonable and necessary’ Medicare coverage. Retrieved from
  5. U.S. Centers for Medicare & Medicaid Services. (2021, January 12). Medicare Coverage of Innovative Technology. Retrieved from
  6. U.S. Centers for Medicare & Medicaid Services. (2003, September 26). Revised Process for Making Medicare National Coverage Determinations. Retrieved from
  7. U.S. Centers for Medicare & Medicaid Services. (n.d.). Medicare National Coverage Process. Retrieved from