Medicare CGM Requirements 2024: A Comprehensive Guide

Posted by Sam Smith on March 19th, 2025

Introduction

Continuous Glucose Monitors (CGMs) have revolutionized diabetes management by providing real-time glucose readings, reducing the need for fingerstick tests, and improving overall blood sugar control. Medicare covers CGMs for eligible beneficiaries under specific conditions, and understanding these requirements is crucial for patients and healthcare providers. In 2024, Medicare has made some updates to its CGM coverage policies. This article will provide an in-depth look at Medicare CGM requirements 2024, eligibility criteria, and how to access these essential devices.

What is a Continuous Glucose Monitor (CGM)?

A Continuous Glucose Monitor (CGM) is a wearable medical device that tracks glucose levels continuously throughout the day and night. It consists of a small sensor placed under the skin, a transmitter that sends data to a display device or smartphone, and an optional receiver. CGMs help individuals with diabetes manage their blood sugar levels more effectively and can alert them to dangerous glucose fluctuations.

Medicare Coverage for CGMs: An Overview

Medicare covers CGMs under Medicare Part B (Durable Medical Equipment - DME) for eligible beneficiaries. However, patients must meet specific criteria to qualify for coverage. Medicare distinguishes between therapeutic (non-adjunctive) CGMs and adjunctive CGMs:

• Therapeutic CGMs: Approved for making treatment decisions without the need for confirmatory fingerstick tests.

• Adjunctive CGMs: Require fingerstick verification before making treatment adjustments.

In 2024, Medicare continues to primarily cover therapeutic CGMs, such as the Dexcom G6/G7 and FreeStyle Libre 2/3, for eligible beneficiaries.

Medicare CGM Requirements 2024

To receive Medicare coverage for a CGM, patients must meet the following Medicare CGM requirements 2024:

1. Diabetes Diagnosis

• The patient must have diabetes mellitus (Type 1 or Type 2) and require frequent glucose monitoring.

2. Insulin or Insulin-Dependent Therapy

• The patient must use multiple daily insulin injections (MDI) or continuous subcutaneous insulin infusion (CSII) (insulin pump therapy).

• Alternatively, Medicare now includes certain non-insulin-dependent diabetics who experience frequent episodes of hypoglycemia.

3. Frequent Blood Glucose Testing

• The patient must perform four or more daily blood glucose tests before starting CGM therapy.

4. Provider’s Certification and Documentation

• A Medicare-enrolled physician must certify that the patient meets the eligibility criteria.

• The provider must document the patient’s diabetes management and the need for CGM in the medical records.

5. Use of a Medicare-Approved CGM System

• Only FDA-approved therapeutic CGMs are covered by Medicare.

• Examples include:

  • Dexcom G6/G7

  • FreeStyle Libre 2/3

6. Regular Follow-Up Visits

• The patient must have regular follow-up visits with a healthcare provider every six months to maintain Medicare coverage.

How to Get a CGM Covered by Medicare

Step 1: Confirm Eligibility

• Check if you meet the Medicare CGM requirements 2024.

• Discuss CGM options with your healthcare provider.

Step 2: Obtain a Prescription

• A Medicare-enrolled physician must prescribe the CGM.

• The prescription should specify the need for a therapeutic CGM.

Step 3: Choose a Medicare-Approved Supplier

• Medicare covers CGMs through approved durable medical equipment (DME) suppliers.

• The device must be obtained from a Medicare-approved pharmacy or supplier.

Step 4: Submit Required Documentation

• Provide necessary medical records and physician certifications.

• Ensure all documents are correctly submitted to avoid claim denials.

Step 5: Receive and Use the CGM

• Once approved, the patient can receive the CGM and start using it under Medicare coverage.

Costs Associated with Medicare CGM Coverage

Medicare beneficiaries typically pay the following costs for CGM coverage:

• Medicare Part B Deductible: 0 (as of 2024, subject to change).

• 20% Coinsurance: After meeting the deductible, Medicare covers 80% of the CGM costs, and the patient is responsible for the remaining 20%.

• Medicare Advantage Plans (Part C): Coverage and costs may vary. Some plans may offer lower copayments or additional benefits.

Changes in Medicare CGM Coverage for 2024

Expanded Coverage for Non-Insulin Users

• Medicare now includes some non-insulin-dependent diabetes patients who experience severe hypoglycemia.

Updated CGM Models

• Newer CGM models, such as Dexcom G7 and FreeStyle Libre 3, are now covered under Medicare.

Streamlined Approval Process

• Medicare has improved the prior authorization process, reducing delays in CGM access.

Frequently Asked Questions (FAQs)

1. Does Medicare cover CGMs for Type 2 Diabetes patients?

Yes, if they meet the Medicare CGM requirements 2024, including frequent glucose testing and insulin use.

2. Can I switch from FreeStyle Libre to Dexcom under Medicare?

Yes, as long as your physician approves the switch and you obtain the CGM from a Medicare-approved supplier.

3. Do Medicare Advantage Plans offer better CGM coverage?

Some Medicare Advantage (Part C) plans may have lower out-of-pocket costs or cover additional CGM brands.

4. What happens if I miss my six-month follow-up appointment?

Failure to attend regular follow-ups may result in loss of CGM coverage under Medicare.

5. Can I get a CGM if I am not using insulin?

In 2024, Medicare expanded coverage to some non-insulin users who experience severe hypoglycemia.

Conclusion

The Medicare CGM requirements 2024 reflect an ongoing effort to improve diabetes management and expand access to life-saving technology. Understanding these requirements is essential for beneficiaries seeking coverage for CGMs. By following the eligibility criteria, obtaining a prescription from a Medicare-enrolled provider, and choosing an approved supplier, patients can effectively navigate the process and benefit from continuous glucose monitoring. If you or a loved one qualifies for a CGM, consult your healthcare provider to initiate the process and improve your diabetes management.

For more information, visit Medicare’s official website or speak with your healthcare provider about the latest CGM coverage updates.