Managing blood glucose levels is a critical part of life for people with diabetes, and continuous glucose monitors (CGMs) are a game-changing tool in this regard. But before diving into the world of CGMs, you might find yourself asking, Do you need a prescription for a CGM? Understanding this question and the nuances of CGMs is essential for making an informed decision. To help you avoid surprises, this article explores seven key things you must know about CGMs, their accessibility, and how they can fit into your diabetes management plan.
1. What Is a CGM and How Does It Work?

Before addressing whether you need a prescription for a CGM, it’s helpful to understand what these devices are and how they function. A CGM is a small wearable device that continuously tracks your blood glucose levels in real time. Unlike traditional fingerstick tests, CGMs provide a steady stream of data, helping users identify trends and make proactive decisions about their health.
The device typically includes:
- A small sensor inserted just beneath the skin to measure glucose levels in interstitial fluid.
- A transmitter that sends data from the sensor to a display device, such as a smartphone or dedicated reader.
- An app or device that interprets the data and provides insights.
This system allows users to monitor fluctuations throughout the day and night without constant finger pricks, enhancing convenience and accuracy.
2. Do You Need a Prescription for a CGM in the United States?
The answer to this question largely depends on the specific CGM device and your location. In the United States, most CGMs, including popular models like the Dexcom G6, Freestyle Libre 2, and Medtronic devices, do require a prescription. This requirement stems from FDA regulations and the fact that CGMs are considered medical devices intended for specific health conditions, primarily diabetes.
However, there are exceptions. For instance:
- Freestyle Libre 2 (14-day system): In recent years, some versions of the Freestyle Libre system have been made available over the counter (OTC) in select pharmacies, depending on state regulations.
- Emerging devices: As technology advances, more companies are exploring OTC options for CGMs to increase accessibility.
If you’re unsure whether a prescription is necessary, consult with a healthcare provider or pharmacist to clarify the requirements for your chosen device.
3. Why Do Some CGMs Require a Prescription?
Prescription requirements for CGMs are generally tied to safety and oversight. Since these devices provide critical health data, healthcare professionals want to ensure they are used appropriately and effectively. When obtaining a prescription, a doctor or diabetes specialist will typically:
- Assess your medical history and specific needs.
- Train you on how to use the CGM properly.
- Monitor your progress and interpret data to optimize treatment.
By involving healthcare professionals, the goal is to maximize the benefits of CGMs while minimizing the risk of misuse or misunderstanding of the data.
4. How Do You Obtain a Prescription for a CGM?
If you’ve determined that you need a prescription, the process is relatively straightforward. Here are the steps:
- Consult with Your Doctor: Schedule an appointment with your primary care provider or endocrinologist to discuss your interest in a CGM. They’ll evaluate your health and determine if you’re a suitable candidate.
- Insurance Verification: Before proceeding, confirm whether your health insurance covers CGMs. Most insurance plans, including Medicare, cover these devices for individuals with Type 1 or Type 2 diabetes who meet specific criteria.
- Obtain the Prescription: Your doctor will write a prescription, which you can take to a pharmacy or submit to a medical supplier authorized to distribute CGMs.
- Set Up Your Device: Once you’ve received your CGM, follow the manufacturer’s instructions to set it up. Many devices require initial calibration and sensor insertion.
5. What Are the Costs Involved with a CGM?
One of the most significant considerations when deciding to use a CGM is the cost. Understanding the financial aspect can help you avoid unexpected expenses. Here’s a breakdown of the potential costs:
- Device Cost: CGMs range in price depending on the brand and features. For example, the Freestyle Libre 2 typically costs around $130–$150 for a 14-day sensor, while the Dexcom G6 sensors and transmitters can be more expensive.
- Insurance Coverage: Many insurance providers, including Medicare, cover CGMs. Coverage terms may vary, so it’s crucial to confirm whether your plan includes your preferred device.
- Out-of-Pocket Costs: If your insurance doesn’t cover CGMs or you’re paying out of pocket, the costs can add up. Factor in the price of sensors, transmitters, and replacement parts.
Tip: Some manufacturers offer discounts, savings programs, or financial assistance for individuals who qualify. It’s worth exploring these options if cost is a concern.
6. Are CGMs Available Over the Counter (OTC)?
While most CGMs require a prescription, there’s a growing push for OTC availability to improve accessibility. The Freestyle Libre 3, for instance, has been at the forefront of this movement, with some versions being sold without a prescription in specific regions.
The primary benefits of OTC CGMs include:
- Ease of Access: You can purchase a device without needing a doctor’s visit or insurance approval.
- Quick Start: OTC availability allows you to begin using a CGM almost immediately.
However, there are drawbacks to consider:
- Limited Support: Without a prescription, you may not receive the same level of guidance from a healthcare professional.
- Insurance Coverage: OTC CGMs are less likely to be covered by insurance, meaning you might need to pay the full cost upfront.
7. How Do CGMs Improve Diabetes Management?
Whether you need a prescription or not, the benefits of using a CGM are undeniable. These devices provide users with valuable insights that can help:
- Improve Glucose Control: By tracking trends and identifying problem areas, you can adjust your diet, exercise, and medication to maintain better blood sugar levels.
- Reduce Hypoglycemia and Hyperglycemia: Real-time alerts can warn you when your glucose is too high or low, allowing for immediate action.
- Enhance Overall Health: Better glucose management reduces the risk of complications such as neuropathy, retinopathy, and cardiovascular issues.
- Provide Peace of Mind: CGMs empower users with knowledge, reducing the stress and guesswork often associated with diabetes management.

Conclusion
So, do you need a prescription for a CGM? In most cases, yes, but this requirement depends on the specific device and your location. Regardless of whether a prescription is needed, CGMs are a powerful tool for managing diabetes. By understanding how they work, the costs involved, and how to obtain one, you can make informed decisions that best suit your needs.
If you’re considering a CGM, start by consulting your healthcare provider to discuss your options. With the right device and support, you’ll be well on your way to better glucose control and a healthier future.
How Aptiva Medical Can Help You
At Aptiva Medical, we’re here to simplify your journey to better diabetes management with Continuous Glucose Monitoring (CGM). Navigating the prescription process for a CGM can feel overwhelming, but our team is dedicated to making it as smooth and stress-free as possible. From answering your questions about prescription requirements to guiding you through device selection, we provide the expertise and support you need every step of the way.
Take control of your health with the help of Aptiva Medical. Whether you’re seeking assistance in obtaining a prescription, exploring the best CGM options for your lifestyle, or simply looking for guidance on how to get started, we’re here to empower you with the tools and knowledge to manage your glucose levels effectively. Don’t wait—reach out to Aptiva Medical today and discover how CGM can transform your diabetes management!