Is a CGM Covered by Insurance? Questions to Ask

Reviewed for accuracy against named public sources. Educational content only — see our Medical Disclaimer.

Continuous glucose monitors (CGMs) can be a valuable tool, but coverage varies significantly by insurer, specific plan, and clinical criteria. Here's a general framework for navigating the question — always confirm specifics directly with your insurer.

What tends to affect coverage

Type of diabetes and current treatment (for example, insulin use is often, though not always, a factor in coverage criteria)
Specific insurance plan — coverage can differ meaningfully even within the same insurer
Whether a prior authorization or specific documentation from your doctor is required
Which CGM brand or model your plan covers, since not all plans cover every device

Medicare and Medicaid

Medicare has established coverage criteria for CGMs for certain beneficiaries, generally tied to treatment type and monitoring needs; Medicaid coverage varies by state. Because criteria can change, checking current guidance directly from Medicare.gov or your state Medicaid program is more reliable than relying on general summaries.

Questions worth asking your insurer

Is a CGM covered under my specific plan, and which models?
Is prior authorization required, and what documentation does my doctor need to provide?
Is the device covered under pharmacy benefits or durable medical equipment benefits — this affects which supplier you use and your copay
What is my expected out-of-pocket cost after coverage?

If coverage is denied

Many insurers have an appeals process, and your doctor's office may be able to help by providing additional documentation of medical necessity. It's also worth asking your doctor's office if they have experience navigating that specific insurer's requirements.

Comparing CGM to fingerstick testing

If you're weighing whether a CGM is worth pursuing, see CGM vs. fingerstick testing for how the two methods compare, and use our unit converter to interpret readings from either.

Private insurance versus employer plans

Coverage can differ even between two employer-sponsored plans from the same insurance company, since employers can select different benefit tiers. If you're choosing between job offers or open enrollment options and CGM coverage matters to you, it's worth asking HR or the insurer directly for plan-specific details rather than assuming based on the insurer's general reputation.

If you're uninsured

Without insurance, CGM costs are typically paid out of pocket, though some manufacturers offer cash-pay discount programs. Comparing manufacturer program details directly, and asking your doctor's office whether they know of current assistance options, is generally more productive than guessing based on retail list prices, which often don't reflect what programs actually charge.

Sources

Medicare.gov: Continuous Glucose Monitors · American Diabetes Association: Diabetes Technology