The Southern Medical Journal (SMJ) is the official, peer-reviewed journal of the Southern Medical Association. It has a multidisciplinary and inter-professional focus that covers a broad range of topics relevant to physicians and other healthcare specialists.

SMJ // Article

Review Article

Continuous Glucose Monitoring in Primary Care: A Practical, Multidisciplinary Review of Data Interpretation and Billing Updates

Authors: Ashley Higbea, PharmD, BCPS, Humza Siddiqi, MD

Abstract

Continuous glucose monitoring (CGM) offers real-time and longitudinal insights into glycemic patterns, time in range, and hypoglycemia. Adopting CGMs into practice can improve clinical outcomes while strengthening patient engagement and enabling data-driven care across routine visits and population health programs. Despite strong evidence of benefit, CGM remains underused in primary care, where most patients with diabetes mellitus are managed. Barriers include limited familiarity with CGM technology, interpretation, workflow, documentation and billing, and patient access and education. The purpose of this clinical review was to help equip primary care clinicians with a concise, family medicine–focused framework for adopting CGM, including technology overview, patient selection and education, practical interpretation of standardized reports, team-based workflow, documentation, and reimbursement.

 
Posted in: Endocrinology, Diabetes, and Metabolism42

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References

1. Centers for Disease Control and Prevention. National Diabetes Statistics Report. https://www.cdc.gov/diabetes/php/data-research/index.html. Accessed February 10, 2026.
 
2. American Diabetes Association. Standards of medical care in diabetes-2026. Diabetes Care 2026;49(Suppl 1):S150-S165.
 
3. Beck RW, Riddlesworth T, Ruedy K, et al. Effect of continuous glucose monitoring on glycemic control in adults with type 1 diabetes using insulin injections: the DIAMOND randomized clinical trial. JAMA 2017;317:371-378.
 
4. Haak T, Hanaire H, Ajjan R, et al. Use of flash glucose-sensing technology for 12 months as a replacement for blood glucose monitoring in insulin-treated type 2 diabetes: a randomized controlled trial. Diabetes Ther 2017;8:55-73.
 
5. Martens T, Beck RW, Bailey R, et al. Effect of continuous glucose monitoring on glycemic control in patients with type 2 diabetes treated with basal insulin: the MOBILE randomized clinical trial. JAMA 2021;325:2262-2272.
 
6. Pettus J, Price DA, Edelman SV. Use of continuous glucose monitoring in primary care practice: a review of benefits and implementation strategies. Clin Diabetes 2020;38:390-398.
 
7. Fokkert MJ, van Dijk PR, Edens MA, et al. Improved well-being and decreased disease burden after 1-year use of flash glucose monitoring (FLARE-NL4). BMJ Open Diabetes Res Care 2019;7:e000809.
 
8. Bender C, Vestergaard P, Cichosz SL. The history, evolution and future of continuous glucose monitoring (CGM). Diabetology 2025;6:17.
 
9. Abbott Diabetes Care, Inc. FreeStyle Libre 3 System Features. https://www.freestyle.abbott/us-en/products/freestyle-libre-3.html. Accessed February 9, 2026.
 
10. Dexcom. Dexcom G7 CGM system. https://www.dexcom.com/g7-cgm-system. Accessed February 9, 2026.
 
11. Abbott Diabetes Care, Inc. How Lingo works. https://www.hellolingo.com/prediabetes. Accessed February 9, 2026.
 
12. Dexcom. Stelo glucose biosensor for type 2 diabetes home page.https://www.stelo.com. Accessed February 9, 2026.
 
13. Danatech. Find & compare continuous glucose monitors. https://www.adces.org/education/danatech/glucose-monitoring/continuous-glucose-monitors-(cgm)/view-compare-cgms. Accessed February 9, 2026.
 
14. PANTHER. Skin solutions. https://www.pantherprogram.org/skin-solutions. Accessed February 11, 2026.
 
15. Danatech. CGM program implementation playbook. https://www.adces.org/education/danatech/glucose-monitoring/continuous-glucose-monitors-(cgm)/cgm-playbook-directory0. Accessed February 9, 2026.
 
16. Vigersky RA, McMahon C. The relationship of hemoglobin A1c to time-in-range in patients with diabetes. Diabetes Technol Ther 2019;21:81-85.
 
17. Battelino T, Danne T, Bergenstal RM, et al. Clinical targets for continuous glucose monitoring data interpretation: recommendations from the International Consensus on Time in Range. Diabetes Care 2019;42:1593-1603.