Glucose Monitors - JA DME
Continuous Glucose Monitor (CGM) Supply Allowance Calculator
The supply allowance, HCPCS codes A4239 or A4238, is billed as one unit of service per 30 days.
- Home Blood Glucose Monitors National Coverage Determination (NCD)
- Glucose Monitors Local Coverage Determination (LCD)
- Glucose Monitors Policy Article
- Standard Documentation Requirements for All Claims Submitted to DME MACs
- Clinician Checklist Continuous Glucose Monitors [PDF] - Checklist to assist clinicians with coverage and documentation requirements
- Clinician Checklist Glucose Monitors and Related Supplies [PDF] - Checklist to assist clinicians with coverage and documentation requirements
- Continuous Glucose Monitors Documentation Checklist [PDF] - Checklist to ensure suppliers gather all required documentation
- Clinician Letter - Continued Medical Necessity [PDF] - Clinician directed letter that reminds them that ongoing need for and use of DMEPOS item must be documented in patient's medical record
- Clinician Letter - Glucose Monitors and Supplies [PDF] - Clinician directed letter that advises them as to what type of documentation is necessary in medical records to support payment of glucose monitors and related supplies
- Clinician Letter - Therapeutic Continuous Glucose Monitor (CGM) [PDF] - Clinician directed letter that advises them as to what type of documentation is necessary in medical records to support payment of glucose monitors and related supplies
- Glucose Monitors and Related Supplies Documentation Checklist [PDF] - Checklist to ensure suppliers gather all required documentation
Different Types of CGMS (Not all Inclusive)
|Stand-alone||Integrated into Insulin Infusion Pump
(CGM Component is bolded)
|Adjunctive CGMs||NOT COVERED BY MEDICARE
- Medical Review - View notifications/findings of pre/post claim reviews completed by Noridian Medical Review
Continuous Glucose Monitors (CGM) procedure code update:
- New HCPCS Codes (Effective for DOS on or after 01/01/2023)
- A4239 - Supply allowance for non-adjunctive, non-implanted continuous glucose monitor (CGM), includes all supplies and accessories, 1month supply = 1 unit of service
- E2103 - Non-adjunctive, non-implanted continuous glucose monitor or receiver
- Deleted Codes (Effective for DOS prior to 01/01/2023)
- K0553 - Supply allowance for therapeutic CGM device
- K0554 - CGM receiver/monitor
|Continuous Glucose Monitor (CGM) Billing Monthly Supply Allowance||
When CGM codes are covered, the related supply allowance codes are also covered.
CGM codes - E2103 and E2102
Supply allowance codes - A4239 and A4238
The supply allowance (codes A4239 and A4238) are billed as 1 Unit of Service (UOS) per thirty (30) days. Only one (1) UOS of code A4239 or A4238 may be billed to the DME MACs at a time. Billing more than 1 UOS per 30 days of code A4239 or A4238 will be denied as not reasonable and necessary.
Because CGM supplies sometimes come as a 14-day supply kit, below is an example of billing the monthly supply allowance.
See the Continuous Glucose Monitor: Provide Supplies for a Calendar Month MLN Connects for more details.
|Continuous Glucose Monitor (CGM) Supply Allowance||
The supply allowance (A4239 or A4238) is billed as one unit of service per 30 days. Billing more than one unit in 30 days will be denied as not reasonable and necessary.
|Diabetic Supplies Used with Blood Glucose Monitor (BGM) and Continuous Glucose Monitor (CGM)||
If there is no glucose monitor in the Medicare claims history or the narrative is missing, the claim will deny as missing the equipment that requires the supply.
If a denial is received with Reason Code 16, Remark Code M124 that states: missing indication of whether the patient owns the equipment that requires the part or supply, the supplier must provide that information to Medicare to place on file. This can be accomplished by calling telephone reopening through the Supplier Contact Center and adding the information below on file.
Once the beneficiary-owned item is placed on file, subsequent supply claims do not require a narrative.
|Continued Coverage for Continuous Glucose Monitor (CGM)||The treating practitioner must conduct, and sign follow up visits for Continuous Glucose Monitor (CGM) continued coverage. As noted in the Glucose Monitors Local Coverage Determination (LCD L33822), for continued CGM coverage, every six (6) months following the initial prescription of the CGM, the treating practitioner must conduct an in-person or Medicare-approved telehealth visit with the beneficiary to document adherence to their CGM regimen and diabetes treatment plan (emphasis added). For Medicare purposes, a pharmacist is not considered a statutorily recognized treating practitioner; therefore, a pharmacist entry in a beneficiary's medical record does not meet the continued coverage requirements in the Glucose Monitors LCD. Please see the Standard Documentation Requirements Article for a clear definition of who qualifies as a treating practitioner.|
|Diabetic Supplies and Accessories Used with CGM E2102 or E2103||
Non-adjunctive CGM devices replace standard home BGMs (HCPCS codes E0607, E2100, E2101) and related supplies (HCPCS codes A4233, A4234, A4235, A4236, A4244, A4245, A4246, A4247, A4250, A4253, A4255, A4256, A4257, A4258, A4259). Claims for a BGM and related supplies, billed in addition to a non-adjunctive CGM device (code E2103) and associated supply allowance (code A4239), will be denied.
Adjunctive CGM devices do not replace a standard home BGM. The supply allowance for an adjunctive CGM (A4238) encompasses all items necessary for the use of the device and includes but is not limited to, CGM sensors and transmitters. Code A4238 does not include a home BGM and related BGM testing supplies. These items may be billed separately, in addition to code A4238. Refer to the CODING GUIDELINES section in the LCD-related Policy Article for additional information.
Last Updated Fri, 15 Sep 2023 15:31:10 +0000
The below are topic specific articles which have been published to "Latest Updates" and sent out in Noridian emails within the past two years. Exclusions to this include time sensitive related announcements such as: Noridian and CMS educational events, Ask-the-Contractor Teleconferences and claims processing downtime.