Billing and Coding: GlycoMark Testing for Glycemic Control (A57237)


Related Local Coverage Determination (LCD)
L36864-GlycoMark® Testing for Glycemic Control


Contractor NameContract NumberStates
Noridian Healthcare Solutions, LLC 01111 - A and B MAC California - Entire State
01112 - A and B MAC California - Northern
01182 - A and B MAC California - Southern
01211 - A and B MAC American Samoa
Guam
Hawaii
Northern Mariana Islands
01212 - A and B MAC American Samoa
Guam
Hawaii
Northern Mariana Islands
01311 - A and B MAC Nevada
01312 - A and B MAC Nevada
01911 - A and B MAC American Samoa
California - Entire State
Guam
Hawaii
Nevada
Northern Mariana Islands
02101 - A and B MAC Alaska
02102 - A and B MAC Alaska
02201 - A and B MAC Idaho
02202 - A and B MAC Idaho
02301 - A and B MAC Oregon
02302 - A and B MAC Oregon
02401 - A and B MAC Washington
02402 - A and B MAC Washington
03101 - A and B MAC Arizona
03102 - A and B MAC Arizona
03201 - A and B MAC Montana
03202 - A and B MAC Montana
03301 - A and B MAC North Dakota
03302 - A and B MAC North Dakota
03401 - A and B MAC South Dakota
03402 - A and B MAC South Dakota
03501 - A and B MAC Utah
03502 - A and B MAC Utah
03601 - A and B MAC Wyoming
03602 - A and B MAC Wyoming

Article Information

Article ID Number: A57237 Status: A-Approved

Article Title: Billing and Coding: GlycoMark Testing for Glycemic Control

Original Article Effective Date: 10/01/2019

Revision Effective Date: 10/16/2025

Article Text:

The following coding and billing guidance is to be used with its associated Local coverage determination.

To receive a GlycoMark test denial, please submit the following claim information:

  • CPT® code 84378 or 84999
  • An Advance Beneficiary Notice (ABN) is not required for statutorily excluded services
    • For a voluntary issued ABN, append with GX modifier
    • To indicate a statutorily excluded service, append with a GY modifier

Coding Information
Bill Type Codes:

Contractors may specify Bill Types to help providers identify those Bill Types typically used to report this service. Absence of a Bill Type does not guarantee that the policy does not apply to that Bill Type. Complete absence of all Bill Types indicates that coverage is not influenced by Bill Type and the policy should be assumed to apply equally to all claims.

999Not Applicable

CPT/HCPCS Codes:

Group 1 Paragraph:

N/A



Group 1 CPT Codes:
84378 SUGARS (MONO-, DI-, AND OLIGOSACCHARIDES); SINGLE QUANTITATIVE, EACH SPECIMEN
84999 UNLISTED CHEMISTRY PROCEDURE


ICD-10 Codes That Are Covered

N/A

XX000 Not Applicable
ICD-10 Codes That Are Not Covered

N/A


Revision History Information
Revision History DateRevision History NumberRevision History Explanation
10/16/2025
R3

Revision Effective Date: 10/16/2025

CONTRACTOR INFORMATION:

Added: JF contractor information

This update is to consolidate JE and JF to have one unified document and policy number.

10/01/2019
R2

Updated to indicate this article is an LCD Reference Article.

10/01/2019
R1

10/01/2019: This article 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 and incorporate into related Billing and Coding Articles. Regulations regarding billing and coding were removed from the CMS National Coverage Policy section of the related GlycoMark Testing for Glycemic Control LCD L36864 and placed in this article. Under CPT/HCPCS Modifiers added modifier GX and GY.