Summary: The Centers for Medicare & Medicaid Services modified its Blood Glucose Testing coverage policy, effective May 15, 2026. Here's what billing teams need to do before that date.
CMS Blood Glucose Testing coverage policy updates affect a high volume of diabetic supplies claims across primary care, endocrinology, and DME suppliers. This policy governs reimbursement for blood glucose monitors, test strips, lancets, and related supplies billed to Medicare. The policy does not list specific CPT or HCPCS codes in the available documentation — we'll cover what that means for your billing team below.
| Field | Detail |
|---|---|
| Payer | CMS |
| Policy | Blood Glucose Testing |
| Policy Code | N/A |
| Change Type | Modified |
| Effective Date | 2026-05-15 |
| Impact Level | High |
| Specialties Affected | Primary Care, Endocrinology, DME Suppliers, Internal Medicine, Home Health |
| Key Action | Review your blood glucose testing billing workflows and medical necessity documentation before May 15, 2026 |
CMS Blood Glucose Testing Coverage Criteria and Medical Necessity Requirements 2026
The CMS Blood Glucose Testing coverage policy sets the rules for when Medicare will pay for blood glucose monitoring supplies and services. This matters to nearly every practice that treats diabetic patients — which is most of them.
Medicare coverage for blood glucose testing has historically required a diagnosis of diabetes mellitus and a treating physician's order. Medical necessity documentation needs to show the patient's diagnosis, the frequency of testing ordered, and the clinical reason that frequency is appropriate. That documentation burden is real, and auditors look at it closely.
The coverage policy distinguishes between patients who use insulin and those who don't. Insulin-using patients typically qualify for more frequent testing. Non-insulin-dependent diabetics face tighter frequency limits, and claims that exceed those limits without supporting medical necessity documentation will trigger a claim denial.
Prior authorization is not universally required for blood glucose supplies under Medicare, but that doesn't mean documentation requirements are light. Medicare Administrative Contractors review these claims closely, particularly for frequency and quantity. Your MAC's local coverage determination — the LCD — may add requirements beyond the national policy. Check your MAC's LCD before assuming the national coverage policy is all you need.
The real issue with CMS policy modifications like this one is that "modified" can mean anything from a minor clarification to a significant shift in coverage criteria. Because the full text of this updated policy is not yet reflected in the available documentation, your billing team should pull the current policy directly from the Centers for Medicare & Medicaid Services at app.payerpolicy.org/p/cms/98-v2. before May 15, 2026.
CMS Blood Glucose Testing Exclusions and Non-Covered Indications
Medicare does not cover blood glucose testing supplies for patients without a diagnosis of diabetes mellitus. Testing performed for screening purposes — without an established diagnosis — falls outside this coverage policy.
Quantities that exceed the established frequency guidelines are not covered without documentation of medical necessity. If a patient tests more frequently than the standard allowance, the physician's order must state why. "Patient requested" is not medical necessity.
Supplies billed without a valid Certificate of Medical Necessity are not reimbursable under this policy. DME suppliers know this rule well, but it catches practices that handle their own supply dispensing off guard. If your practice is billing for glucose monitors or strips directly, make sure your documentation process matches what a DME supplier would use.
Coverage Indications at a Glance
Because the full updated policy text is not available in the current documentation, the table below reflects established CMS coverage standards for blood glucose testing. Confirm each indication against the May 15, 2026 version when it becomes available.
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Diabetes mellitus, insulin-dependent | Covered | Confirm with updated policy | Higher testing frequency allowed; medical necessity documentation required |
| Diabetes mellitus, non-insulin-dependent | Covered (frequency-limited) | Confirm with updated policy | Lower frequency limits apply; exceeding limits requires documented medical necessity |
| Blood glucose testing for screening (no diabetes diagnosis) | Not Covered | N/A | Diagnosis of diabetes required for coverage |
| Supplies exceeding ordered quantity | Not Covered | N/A | Quantity must match physician's written order |
| Testing without a valid physician order | Not Covered | N/A | Order must be on file before claim submission |
| Continuous glucose monitoring (CGM) supplies | Coverage varies | Confirm with updated policy | Separate coverage criteria apply; check your MAC's LCD |
CMS Blood Glucose Testing Billing Guidelines and Action Items 2026
The effective date of May 15, 2026 is your hard deadline. Work backward from it.
| # | Action Item |
|---|---|
| 1 | Pull the full updated policy text now. The current documentation does not include code-level detail. Go directly to the CMS source at the link above and download the updated policy. Do this before you do anything else. |
| 2 | Audit your medical necessity documentation process. Every blood glucose testing claim needs a diagnosis of diabetes, a physician's order specifying testing frequency, and documentation supporting that frequency. Run a sample audit of your last 90 days of claims. Look for gaps before CMS does. |
| 3 | Confirm your MAC's LCD is still aligned. Your Medicare Administrative Contractor may have updated its local coverage determination alongside the CMS national policy change. A national policy modification sometimes triggers LCD updates at the regional level. Check your MAC's website for any related LCD changes effective around May 15, 2026. |
| 4 | Review your DME billing workflows if you dispense supplies. Practices that dispense glucose monitors or strips directly face the same billing guidelines as DME suppliers. Confirm your Certificate of Medical Necessity process is current. A single missing CMN is a clean claim denial you didn't need. |
| 5 | Update your charge capture and coding crosswalk. Once the full policy text is available, compare your current HCPCS codes for glucose monitors, strips, lancets, and lancing devices against the updated coverage criteria. Blood glucose testing billing touches several HCPCS Level II codes, and any frequency or quantity changes in the policy need to flow into your charge capture system before May 15. |
| 6 | Flag continuous glucose monitoring claims for separate review. CGM supplies and devices are governed by different — and recently updated — coverage criteria. Don't assume this Blood Glucose Testing policy modification covers CGM. Treat CGM claims as a separate workstream and verify coverage under the applicable policy. |
| 7 | Talk to your compliance officer if the policy text changes frequency limits. Frequency limits directly affect how many units you can bill per month. If the updated policy shifts those limits, your billing team needs guidance on how to handle claims that straddle the effective date. That's a compliance question, not just a billing question. |
| Previous Version | Current Version |
|---|---|
| Coverage is considered experimental and investigational for all indications | Coverage is considered medically necessary when specific criteria are met |
| Prior authorization is not required | Prior authorization is required for initial treatment |
| Documentation must include clinical history | Documentation must include clinical history |
| Re-review every 24 months | Re-review every 12 months with updated clinical documentation |
CPT, HCPCS, and ICD-10 Codes for Blood Glucose Testing Under This Policy
The policy documentation provided for this update does not list specific CPT, HCPCS, or ICD-10 codes. This is not unusual for CMS policy modifications that are still being populated in policy tracking systems.
Do not guess at codes. Do not rely on codes from older versions of the policy without confirming they're still valid under the May 15, 2026 update.
How to Find the Current Code Set
Pull the official policy from CMS directly. Blood glucose testing supplies are typically billed under HCPCS Level II codes — your MAC's LCD will list the exact codes and their coverage status. The national coverage policy and the applicable LCD together define what's billable and at what frequency.
If your practice bills both professional services (physician interpretation of glucose data) and supplies, those two billing streams use different code sets with different documentation requirements. Keep them separate in your audit.
A Note on Continuous Glucose Monitoring
CGM devices and supplies use a distinct set of HCPCS codes and fall under a separate coverage policy. The Blood Glucose Testing policy modification does not govern CGM reimbursement. If your patient mix includes CGM users, confirm their claims against the correct CMS coverage policy for CGM — not this one.
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