Local Coverage Determination (LCD)

GlycoMark® Testing for Glycemic Control

L36864

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Contractor Information

Contractor Name	Contract Type	Contract Number	Jurisdiction	States
Noridian Healthcare Solutions, LLC	A and B MAC	01111 - MAC A	J - E	California - Entire State
Noridian Healthcare Solutions, LLC	A and B MAC	01112 - MAC B	J - E	California - Northern
Noridian Healthcare Solutions, LLC	A and B MAC	01182 - MAC B	J - E	California - Southern
Noridian Healthcare Solutions, LLC	A and B MAC	01211 - MAC A	J - E	American Samoa Guam Hawaii Northern Mariana Islands
Noridian Healthcare Solutions, LLC	A and B MAC	01212 - MAC B	J - E	American Samoa Guam Hawaii Northern Mariana Islands
Noridian Healthcare Solutions, LLC	A and B MAC	01311 - MAC A	J - E	Nevada
Noridian Healthcare Solutions, LLC	A and B MAC	01312 - MAC B	J - E	Nevada
Noridian Healthcare Solutions, LLC	A and B MAC	01911 - MAC A	J - E	American Samoa California - Entire State Guam Hawaii Nevada Northern Mariana Islands

LCD Information

Document Information

LCD ID
L36864

LCD Title
GlycoMark® Testing for Glycemic Control

Proposed LCD in Comment Period
N/A

Source Proposed LCD
DL36864

Original Effective Date
For services performed on or after 08/01/2017

Revision Effective Date
For services performed on or after 03/04/2021

Revision Ending Date
N/A

Retirement Date
N/A

Notice Period Start Date
06/15/2017

Notice Period End Date
07/31/2017

Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

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CMS National Coverage Policy

Title XVIII of the Social Security Act, §1862(a)(1)(A) allows coverage and payment for only those services that are considered to be reasonable and necessary for the diagnosis or treatment of illness or injury or to improve the functioning of a malformed body member.

42 CFR §410.32(a) indicates that diagnostic tests may be ordered by the treating physician (or other treating practitioner acting within the scope of his or her license and Medicare requirements).

CMS Internet-Only Manual, Pub 100-02, Medicare Benefit Policy Manual, Chapter 15, §80 Requirements for Diagnostic X-Ray, Diagnostic Laboratory, and Other Diagnostic Tests, §80.1.1 Certification Changes, §80.1.2 A/B MAC (B) Contacts With Independent Clinical Laboratories.

Coverage Guidance

Coverage Indications, Limitations, and/or Medical Necessity

This is a non-coverage policy for the GlycoMark® assay (aka 1,5-anhydroglucitol [1,5-AG]; developed by Nippon Kayaku, Co., Ltd).

Summary of Evidence

Current Diabetes Testing

Hemoglobin A1C measurement, reflecting hemoglobin glycation over the erythrocyte life span, is proportional to the mean glucose concentration over the preceding 2-3 months. A1C testing is recommended by the American Diabetes Association (ADA) and the European Association for the Study of Diabetes (EASD) consensus guideline for pharmacotherapy to control hyperglycemia in type 2 diabetes.¹ In addition to A1C, fasting plasma glucose is used by patients and physicians to monitor diabetes. However, recent evidence strongly suggests that control of post-prandial hyperglycemia (PPG) may be necessary to achieve A1C targets <7%.²

Several landmark clinical trials have convincingly demonstrated that individuals with diabetes are at increased risk of developing microvascular complications including retinopathy, nephropathy and neuropathy, as well as cardiovascular (CV) disease.^3,4,5 The importance of tight glycemic control for protection against microvascular and CV disease in diabetes was established in the Diabetes Control and Complications Trial (DCCT)/Epidemiology of Diabetes Interventions and Complications (EDIC) study.⁶ The role of glycemic control on microvascular disease in type 2 diabetes was documented in the United Kingdom Prospective Diabetes Study (UKPDS).⁷ In addition, improving glycemic control improves microvascular outcomes, as illustrated by the findings of a meta-analysis of randomized trials (34,912 participants).⁸

Considerable data indicates that elevated PPG levels, even in the absence of fasting hyperglycemia, increases the risk for CV disease.^9,10,11 Numerous epidemiological studies have demonstrated a correlation between risk for CVD and both fasting and postprandial plasma glucose levels or A1C values.¹¹ The United Kingdom Prospective Diabetes Study (UKPDS),³the Diabetes Control and Complications Trial (DCCT),⁵ the Action to Control Cardiovascular Risk in Diabetes (ACCORD),¹² and the Action in Diabetes and Vascular Disease: Preterax and Diamicron Modified Release Controlled Evaluation (ADVANCE)¹³ were landmark controlled clinical trials that evaluated the benefits of intensive glucose control on diabetes complications. Both the DCCT and UKPDS primary intervention studies also demonstrated long-term macrovascular benefits (>10 year follow-up).^6,14 These studies illustrate that intensive glycemic control early in the course of diabetes is important in achieving CV benefit and provides guidance in terms of stratification of patients’ target glycemic control. The fact that postprandial glucose control is essential to optimize blood glucose levels has been confirmed by randomized controlled trials where therapeutic agents primarily target postprandial hyperglycemia.^15,16,17

1,5-AG Assay

Measurement of serum 1,5-anhydroglucitol (1,5-AG) is thought to be a useful index of postprandial hyperglycemia, and is thought to be more robust than hemoglobin A1C (A1C) or fructosamine (used to evaluate glycemic control over 10-14 days).^18,19 There is evidence that glycemic excursions, an aspect of diabetes control incompletely captured by A1C, may contribute to vascular damage independently of mean glucose concentration (A1C).^20,21,22 Testing for 1,5-AG has been proposed to be an additional glycemic biomarker to assist clinicians in the management of glycemic control, particularly in patients with moderate to near-normal glycemic control to complement frequent self-monitoring or continuous monitoring of plasma glucose to confirm overall glycemic control.

The 1,5-AG test measures the blood level of 1,5-anhydroglucitol, a compound that is ingested in food. Because the compound is not metabolized, a relatively constant blood level is maintained in individuals with blood glucose below 180 mg/dL via urinary excretion and reabsorption. In non-diabetic individuals, the rate of intake of 1,5-AG is matched by the daily excretion rate such that the serum levels and urinary excretion remain constant. When a diabetic’s blood glucose exceeds 180 mg/dL, 1,5-AG reabsorption is competitively blocked by glucose and the serum level of 1,5-AG falls. Serum 1,5-AG decreases until glucose level drops below 180 mg/dL when 1,5-AG reabsorption resumes a steady rate. In brief, 1,5-AG levels are inversely proportional to the degree of hyperglycemia.

Proponents of serum 1,5-AG claim that testing reflects hyperglycemia over the past 2 weeks (inter-day excursions) and is recommended by the manufacturer for use in persons with diabetes and A1C <8% to help identify patients with frequent hyperglycemic excursions, and may be useful for estimating within-day glycemic excursion. They specify that serum 1,5-AG correlates with postprandial hyperglycemia in persons with diabetes and A1C <7% and is stated to be more strongly correlated with glucose variability as compared to A1C, fructosamine or glycated albumin over 2 to 3 days in persons with moderate glycemic control (A1C <8%). Data suggests that 1,5-AG is strongly inversely associated with A1C and fasting glucose in persons diagnosed with diabetes but is poorly correlated with fasting glucose and A1C in persons without diabetes. Multiple publications correlate various 1,5-AG end points with continuous glucose monitoring and show potentially improved correlation with glucose fluctuation and A1C in patients with diabetes and A1C <8% than other biomarkers.^{23,24,25,26,27,28} However, the number of studies and the quality of study correlations is poor. Appropriate clinical targets are unclear, as the strongest correlations are observed at the highest glucose concentrations, which suggests that the utility of 1,5-AG may primarily be limited to persons with overtly elevated glucose.

Analysis of Evidence (Rationale for Determination)

Level of Evidence:

Quality: Poor

Strength: Poor

Weight: Minimal

In summary, the data to support the use of this test is based on showing correlations over short periods with other early glycemic markers (A1C, fructosamine, or glycated albumin) but is not specific to the intended use population. Comparative studies do not show that 1,5-AG is as good as a 2-hour post prandial blood glucose, or alternative biomarker. At the current time, the relationship of 1,5-AG to long term diabetic complications in a patient with A1C <8% is unknown. Furthermore, no prospective studies have shown that managing 1,5-AG in patients with an A1C of 6.5-8% reduces micro- or macrovascular complications. In addition, there are no definitive guidelines for using alternative biomarkers as adjuncts to standard markers of glycemia, such as A1C, fasting glucose, or self-monitoring blood glucose measures. Long-term prospective studies are lacking, and large cohort studies are warranted to determine whether alternative biomarkers have potential utility for early diagnosis, management of diabetes, and prevention of diabetic complications.

Due to the lack of clinical utility, 1,5-AG testing is not reasonable and necessary for the management of diabetes or the prevention of diabetic complications, and is not covered by Medicare.

Proposed Process Information

Synopsis of Changes

Changes	Fields Changed
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Coding Information

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Code	Description
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Revenue Codes

Code	Description
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ICD-10-CM Codes that Support Medical Necessity

ICD-10-CM Codes that DO NOT Support Medical Necessity

Additional ICD-10 Information

General Information

Associated Information
N/A

Sources of Information
N/A

Bibliography

1. Nathan DM, Buse JB, Davidson MB, et al. Medical management of hyperglycemia in type 2 diabetes: A consensus algorithm for the initiation and adjustment of therapy: A consensus statement of the American Diabetes Association and the European Association for the Study of Diabetes. Diabetes Care. 2009;32:193-203.

2. Woerle HJ, Neumann C, Zschau S, et al. Impact of fasting and postprandial glycemia on overall glycemic control in type 2 diabetes: Importance of postprandial glycemia to achieve target HbA1c levels. Diabetes Res Clin Pract. 2007;77:280–285.

3. UK Prospective Diabetes Study (UKPDS) Group. Intensive blood glucose control with sulphonylureas or insulin compared with conventional treatment and risk of complications in patients with type 2 diabetes (UKPDS 33). Lancet. 1998;352:837–853.

4. Patel A, MacMahon S, Chalmers J, et al; for the ADVANCE Collaborative Group. Intensive blood glucose control and vascular outcomes in patients with type 2 diabetes. N Engl J Med. 2008;358:2560–72.

5. The Writing Team for the Diabetes Control and Complications Trial/ Epidemiology of Diabetes Interventions and Complications Research Group. Effect of intensive therapy on the microvascular complications of type 1 diabetes mellitus. JAMA. 2002;287:2563–9.

6. Intensive diabetes treatment and cardiovascular disease in patients with type 1 diabetes. NEJM. 2005;353(25):2643–53. doi:10.1056/NEJMoa052187.

7. King P, Peacock I, Donnelly R. The UK prospective diabetes study (UKPDS): Clinical and therapeutic implications for type 2 diabetes. British J Clinical Pharm. 1999;48(5):643–8. doi:10.1046/j.1365-2125.1999.00092.x.

8. Hemmingsen B, Lund SS, Gluud C, et al. Targeting intensive glycaemic control versus targeting conventional glycaemic control for type 2 diabetes mellitus. The Cochrane Library 2013.

9. Malmberg K, Rydén L, Wedel H, et al; for the DIGAMI 2 Investigators. Intense metabolic control by means of insulin in patients with diabetes mellitus and acute myocardial infarction (DIGAMI 2): Effects on mortality and morbidity. Eur Heart J. 2005;26:650–661.

10. Dale AC, Vatten LJ, Nilsen TI, Midthjell K, Wiseth R. Secular decline in mortality from coronary heart disease in adults with diabetes mellitus: Cohort study. BMJ. 2008;337:a236.

11. Gerich JE. Clinical significance, pathogenesis, and management of postprandial hyperglycemia. Arch Intern Med. 2003;163:1306–1316.

12. Gerstein HC, Miller ME, Byington RP, et al. Action to control cardiovascular risk in diabetes (ACCORD) study group: Effects of intensive glucose lowering in type 2 diabetes. NEJM. 2008;358:2545-59.

13. Patel A, MacMahon S, Chalmers J, et al. Intensive blood glucose control and vascular outcomes in patients with type 2 diabetes. NEJM. 2008;358:2560-72.

14. Holman RR, Paul SK, Bethel MA, et al. 10-year follow-up of intensive glucose control in type 2 diabetes. NEJM. 2008;359:1577-89.

15. Chiasson JL, Josse RG, Gomis R, et al. Acarbose treatment and the risk of cardiovascular disease and hypertension in patients with impaired glucose tolerance: The STOP-NIDDM trial. JAMA. 2003;290:486–494.

16. Mita T, Watada H, Shimizu T, et al. Nateglinide reduces carotid intima-media thickening in type 2 diabetic patients under good glycemic control. Arterioscler Thromb Vasc Biol. 2007;27:2456–2462.

17. Iijima R, Nakajima R, Sugi K, Nakamura M. Improvement of postprandial hyperglycemia has a positive impact on epicardial flow of entire coronary tree in acute coronary syndromes patients. Circ J. 2007;71:1079–1085.

18. Dungan KM, Buse JB, Largay J, et al. 1,5-Anhydroglucitol and postprandial hyperglycemia as measured by continuous glucose monitoring system in moderately controlled patients with diabetes. Diabetes Care. 2006;29(6):1214–9. doi:10.2337/dc06-1910.

19. Kishimoto M, Yamasaki Y, Kubota M, et al. 1,5-anhydro-d-glucitol evaluated daily glycemic excursions in well-controlled NIDDM. Diabetes Care. 1995;18:1156–9.

20. Ceriello A, Taboga C, Tonutti L, et al. Evidence for an independent and cumulative effect of postprandial hypertriglyceridemia and hyperglycemia on endothelial dysfunction and oxidative stress generation: Effect of short- and long-term simvastatin treatment. Circulation. 2002;106:1211-8.

21. American Diabetes Association. Postprandial blood glucose. American diabetes association. Diabetes Care. 2001;24:775-8.

22. Meigs JB, Nathan DM, D’Agostino RB Sr, et al. Fasting and postchallenge glycemia and cardiovascular disease risk: The Framingham Offspring Study. Diabetes Care. 2002;25:1845-50.

23. Dworacka M, Winiarska H. The application of plasma 1,5-anhydro-d-glucitol for monitoring type 2 diabetic patients. Disease Markers. 2005;21(3):127–32. doi:10.1155/2005/251068.

24. Kim MJ, Jung HS, Hwang-Bo Y, et al. Evaluation of 1,5-anhydroglucitol as a marker for glycemic variability in patients with type 2 diabetes mellitus. Acta Diabetologica. 2013;50(4):505–10. doi:10.1007/s00592-011-0302-0.

25. Stettler C, Stahl M, Allemann S, et al. Association of 1,5-anhydroglucitol and 2-h postprandial blood glucose in type 2 diabetic patients. Diabetes Care. 2008;31(8):1534–5. doi:10.2337/dc08-0385.

26. Association of 1,5-anhydroglucitol and 2-h postprandial blood glucose in type 2 diabetic patients: Response to Schindhelm et al. Diabetes Care. 31(11):e90–e90. doi:10.2337/dc08-1491.

27. Wang Y, Zhang YL, Wang YP, et al. A study on the association of serum 1,5-anhydroglucitol levels and the hyperglycaemic excursions as measured by continuous glucose monitoring system among people with type 2 diabetes in China: 1,5-AG, hyperglycaemic excursions Diabetes Metab Res Rev. 2012;28(4):357–62. doi:10.1002/dmrr.2278.

28. Yoo HY, Kwak BO, Son JS, et al. Value of serum 1,5-anhydroglucitol measurements in childhood obesity in the continuum of diabetes. Ann Pediatr Endocrinol Metab 2015;20(4):192-7. doi:10.6065/apem.2015.20.4.192.

Revision History Information

Revision History Date	Revision History Number	Revision History Explanation	Reasons for Change
03/04/2021	R4	Under LCD Title added registered mark to GlycoMark. Under CMS National Coverage Policy updated descriptions and added section headings to regulations. Under Bibliography changes were made to citations to reflect AMA citation guidelines. Formatting, punctuation and typographical errors were corrected throughout the LCD. At this time 21^stCentury Cures Act will apply to new and revised LCDs that restrict coverage which requires comment and notice. This revision is not a restriction to the coverage determination; and, therefore not all the fields included on the LCD are applicable as noted in this policy.	Public Education/Guidance
10/01/2019	R3	10/01/2019: This LCD is being revised in order to adhere to CMS requirements per chapter 13, section 13.5.1 of the Program Integrity Manual, to remove all coding from LCDs. There has been no change in coverage with this LCD revision. Regulations regarding billing and coding were removed from the *CMS National Coverage Policy* section of this LCD and placed in the related Billing and Coding: GlycoMark Testing for Glycemic Control Article A57237. At this time 21^stCentury Cures Act will apply to new and revised LCDs that restrict coverage which requires comment and notice. This revision is not a restriction to the coverage determination; and, therefore not all the fields included on the LCD are applicable as noted in this policy.	Provider Education/Guidance
10/01/2019	R2	10/01/2019: At this time 21st Century Cures Act will apply to new and revised LCDs that restrict coverage which requires comment and notice. This revision is not a restriction to the coverage. LCD was converted to the "no-codes" format.	Revisions Due To Code Removal
12/21/2017	R1	Added 21st Century Cures Act information	Creation of Uniform LCDs With Other MAC Jurisdiction

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Public Versions

Updated On	Effective Dates	Status
02/23/2021	03/04/2021 - N/A	Currently in Effect	You are here
Some older versions have been archived. Please visit the MCD Archive Site to retrieve them.

Keywords

GlycoMark
Glycemic Control
1,5-Anhydroglucitol
Hemoglobin A1C
1,5-AG Assay
Diabetes

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GlycoMark® Testing for Glycemic Control

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