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Diabetes, in its various types, is one of the most common conditions that practicing dentists are likely to encounter. Diabetes is also a risk factor for periodontal disease, stroke and heart disease.


In 2014, the New Jersey State Board of Dentistry ruled that dentists in New Jersey could screen at-risk patients for diabetes.


In 2018, GDHA requested the Georgia Board of Dentistry (BOD) authorize dental hygienists to provide “chair-side screening for dysglycemia via finger-stick glucose testing under the direct supervision of their dentist,  which the Board unanimously approved!

In 2019, the ADA published the "D0411 and D0412 – Quick Guide to In-Office Monitoring and Documenting Patient Blood Glucose and HbA1C Level". The guide was published to educate dentists and others in the dental community on coding for two unique in-office monitoring procedures pertinent to this chronic disease.


The CDT Code Entries for These Procedures Code D0411 was added to the CDT Code effective January 1, 2018 and the full published entry is:

  • D0411 HbA1c in-office point of service testing

  • Code D0412 was added to the CDT Code effective January 1, 2019 and the full published entry is:

    • D0412 blood glucose level test – in-office using a glucose meter This procedure provides an immediate finding of a patient’s blood glucose level at the time of sample collection for the point of service analysis.

The procedures reported with these codes can help dentists better manage patients with medical comorbidities by assessing their condition chair-side. Findings from these procedures can affect planned oral care treatment, and may also prompt dentists to refer patients who may need to be seen by their physicians for follow-up and management of the chronic condition.

Why is In-Office Monitoring for Diabetes in the Dental Setting needed?

Dentists are not expected to diagnose diabetes but in-office monitoring of patient blood glucose levels on an ongoing basis or immediately prior to treatment are appropriate activities. Findings from monitoring the patient’s glycemic control may prompt a dentist to amend the patient’s oral care treatment planning.


There are several factors associated with increased risk of diabetes, some of which may already be in their dental records, such as:

  • Obesity or being overweight

  • Ethnic background (diabetes happens more often in Hispanic/Latino Americans, AfricanAmericans, Native Americans, Asian-Americans, Pacific Islanders, and Alaska natives)

  • Sedentary lifestyle (exercise less than three times a week)

  • Family history (parent or sibling who has diabetes)


A resource that helps identify patients who might be candidates for diabetes screening and steps involved in arriving at the final diagnosis is the Point-of-care prediabetes identification guide  prepared jointly by the American Diabetes Association, the American Medical Association, and the Centers for Disease Control and Prevention (CDC). For people who have not had a medical diagnosis of diabetes a self-administered risk assessment test can be used to identify high-risk individuals. The CDC’s test form (CDC Prediabetes Screening Test) is paper only that a patient may download and complete. The American Diabetes Association has form that can be completed either online or on paper (Type 2 Diabetes Risk Test).


According to the National Diabetes Statistical Report over 30 million people have diabetes and 84 million people have prediabetes. Further, the U.S. Preventive Services Task Force (USPSTF) recommends that adults with treated or untreated hypertension (i.e., sustained blood pressure >135/80 mm Hg) should be screened for diabetes. Additional USPSTF information is available online at – Diabetes Mellitus (Type 2) in Adults

If a person with diabetes or at risk for the condition is about to undergo a long complex dental procedure, it is important to know their current blood glucose level – and the D0412 procedure determines the patient’s blood glucose level at the time of sample collection. HbA1c measures the proportion of hemoglobin that is glycosylated (to which glucose is bound) and provides a summary measure of a patient’s average circulating blood glucose level over the previous 2 to 3 month period.


Even though the patient’s HbA1c percentage may indicate good glycemic control, glucose levels vary during the course of a day. Therefore the patient’s actual blood glucose level at the time of procedure delivery could be very low, or very high.


A dentist can determine, using the D0412 procedure, how the patient’s blood glucose level, may affect treatment scheduled for the day’s appointment.

  • A glucose level below 70mg/dl is the clinical definition of hypoglycemia alert level, which means the patient is at risk of a hypoglycemic event during the procedure. Therefore the procedure ought not be initiated until the patient’s blood sugar level is in the acceptable range.

  • A glucose level over 300 mg/dl could lead to delayed healing of the surgical site and severe infection. This suggests that elective surgical procedures be rescheduled and delivered when the patient’s circulating glucose level is in the acceptable range.

Questions and Answers:

1. What type of equipment, is needed for these in-office testing procedures? As dentists are not expected to diagnose diabetes, in-office monitoring of patient blood glucose levels on an ongoing basis or immediately prior to treatment may utilize “finger-stick” measurement tools. Selection of the appropriate tool is determined by the dentist.

There are federal regulations to consider. Laboratories and providers performing in-office testing are regulated under the Clinical Laboratory Improvement Amendments of 1988 (CLIA). The dental office may require a “CLIA Certificate of Waiver” in order to perform blood glucose testing using CLIA waived test kits.

Waived tests typically include systems cleared by the FDA for home use. Providers providing patient testing with a CLIA certificate of waiver must follow manufacturer’s instructions and perform testing only with test kits that have been assigned a “CLIA waived” status by the FDA.


2. How are these “finger-stick” procedures delivered? There are established protocols for acquiring and assaying the small sample of blood for a Point of Contact Test (POCT). Protocol steps include: a) finger selection; b) massaging, cleaning and drying the site; c) skin puncture with a lancet; d) wiping away the first blood before collecting the sample without “milking the finger” site; e) placing the sample into the analyzing device; and f) reading the results.


Every blood donor has experienced skin puncture with a lancet. There can be some variations in steps e) and f), dependent on the test device used.

3. What do the D0411 or D0412 procedure results indicate? For the D0411 procedure the analyzing device reports the percentage of hemoglobin that is glycosylated. There is a recognized range of percentages that is used to indicate whether the patient’s HbA1c is considered to be in the normal, prediabetes or diabetes range, as illustrated:



For the D0412 procedure the analyzing device reports blood glucose as a milligrams per deciliter (mg/dl) figure. There is a recognized range of hypoglycemic (low) through hyperglycemic (high) blood sugar levels, as seen in the below illustration:

4. Are there rules or regulations regarding in office HbA1c testing documented with CDT code D0411, or in-office blood-glucose level testing documented with CDT code D0412?

Yes, be sure to check your state’s Dental Practice Act to determine if testing is within the scope of your license. There are also federal and state regulations that may affect your business decision to provide this service. Remember the purpose of these tests is to understand the risk of glycemia related complications at the time of the scheduled appointment and not to render a diagnosis of diabetes


5. What is HbA1c?

Hemoglobin A1c, also known as glycated hemoglobin, is a measure of the amount of glucose attached to the hemoglobin in red blood cells and is directly proportional to the average circulating glucose levels. Patient fasting is not required prior to the HbA1c test.

6. What are a dentist’s ethical obligations to deliver these procedures to patients (e.g., all patients; those presenting with signs or symptoms or medical history)?

Within dentistry there is no consensus that blood sugar monitoring is considered a standard of care. In fact the New Jersey State Board of Dentistry has explicitly stated that HbA1c screening is not presumed to be a standard of care. A dentist should provide a patient with sufficient information about the monitoring procedure, including its relevance to both oral and general health, so that she or he can make an informed decision.

7. How do I close the referral loop – informing the patient’s physician – of the finger-stick findings?

The findings should be conveyed to the patient’s physician or appropriate health care provider. Before doing so be sure to have an information release form signed by the patient on file. These referrals must be tracked and documented. Failure to do so may lead to liability issues.

8. What should I do with the results if the patient does not have a physician or other health care provider who can act on the information?

The patient should be informed of the screening’s findings, be directed towards resources containing more information, and encouraged to become a physician’s patient of record for their other health needs. These actions must be noted in the patient’s dental records, with appropriate follow-up when possible (e.g., next visit).


9. What components of the D0411 or D0412 procedure may be delegated to staff and which may only be performed by the dentist?

As with any procedure, the practitioner providing the service is determined by state law and licensure. Direct or indirect supervision by a dentist may, or may not, be a requirement.


10. What documentation should I maintain in my patient records, and what will be needed on a claim submission when reporting D0411?

The patient’s records would include the same information about services provided as is done with other dental procedures – plus notations of the activities described in the answers to questions 7. 8 and 9 above, as applicable. A dental claim would be coded and completed in the same manner as other dental procedures (e.g., date of service, CDT code, full fee).


11. What dental benefit plan coverage – commercial or governmental – is anticipated?

As with any procedure documented with a CDT Code there is no guarantee of coverage by a patient’s dental benefit plan.


12. What factors should I consider when determining my full fee for the D0411 or D0412 service? Dentists and other practitioners in the dental community acquire their skills and expertise through training and experience. It is up to each individual to determine the value of their time and the time required to provide the service when determining their full fee. Other unique factors such as the cost of acquiring and maintaining a supply of the finger-stick test materials may also be considered.

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