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{"DID":"crit1cbe5b","Sites":"DEX","Start Date":"12-19-2022 08:16","End Date":"12-26-2022 20:17","Content":"DEX Customer Service will be closed on December 23 and 26, 2022, in observance of the Christmas holiday.","URL":"","Target":null,"Color":"green","Mode":"Standard\n","Priority":"yes"}, {"DID":"crit2a411c","Sites":"DEX","Start Date":"09-02-2022 07:32","End Date":"09-05-2022 20:32","Content":"DEX Customer Service will be closed on September 5, 2022, in observance of Labor Day.","URL":"","Target":"_self","Color":"green","Mode":"Standard\n","Priority":"yes"}, {"DID":"crit2eb32b","Sites":"DEX","Start Date":"06-01-2022 00:47","End Date":"06-30-2022 19:00","Content":"Attention: Please take a look at the Top News update for important information for Medicare Advantage Payors fourth wave.","URL":"https://www.dexzcodes.com/palmetto/dex.nsf/DID/07860YUDBI","Target":"_self","Color":"blue","Mode":"Standard\n","Priority":null}, {"DID":"crit4aadac","Sites":"DEX","Start Date":"07-05-2022 08:07","End Date":"07-31-2022 19:00","Content":"Attention: Please take a look at the Top News update for important information for Medicare Advantage Payors fifth wave.","URL":"https://www.dexzcodes.com/palmetto/dex.nsf/DID/07860YUDBI","Target":"_self","Color":"blue","Mode":"Standard\n","Priority":null}, {"DID":"crita2453e","Sites":"DEX","Start Date":"11-21-2022 08:16","End Date":"11-25-2022 20:17","Content":"DEX Customer Service will be closed on November 24 and 25, 2022, in observance of the Thanksgiving holiday.","URL":"","Target":null,"Color":"green","Mode":"Standard\n","Priority":"yes"}, {"DID":"crita5deeb","Sites":"DEX","Start Date":"07-01-2022 07:32","End Date":"07-04-2022 20:32","Content":"DEX Customer Service will be closed on July 4, 2022, in observance of Independence Day.","URL":"","Target":null,"Color":"green","Mode":"Standard\n","Priority":"yes"}, {"DID":"critbbaeec","Sites":"DEX","Start Date":"05-27-2022 12:40","End Date":"05-30-2022 21:47","Content":"DEX Customer Service will be closed on May 30, 2022, in observance of Memorial Day.","URL":"","Target":"_self","Color":"green","Mode":"Standard\n","Priority":"yes"}, {"DID":"critbece1d","Sites":"DEX","Start Date":"01-13-2023 08:00","End Date":"01-16-2023 17:30","Content":"DEX Customer Service will be closed on January 16, 2023, in observance of Martin Luther King Jr. Day.","URL":"","Target":"_self","Color":"green","Mode":"Standard\n","Priority":"yes"}, {"DID":"critde3edd","Sites":"DEX","Start Date":"12-30-2022 08:16","End Date":"01-02-2023 20:17","Content":"DEX Customer Service will be closed on January 2, 2023, in observance of the New Year's Day holiday.","URL":"","Target":"_self","Color":"green","Mode":"Standard\n","Priority":"yes"}, {"DID":"crite2be25","Sites":"DEX","Start Date":"08-23-2022 09:53","End Date":"08-29-2022 09:00","Content":"Palmetto GBA will be performing a system upgrade on the DEX (TM) Registry Thursday, August 25th at 5pm ET through Monday, August 29th at approximately 8am ET. For any questions, please contact DEX.customer.service@palmettogba.com","URL":"","Target":"_self","Color":"yellow","Mode":"Standard\n","Priority":"yes"}, {"DID":"crite515de","Sites":"DEX","Start Date":"09-06-2022 08:07","End Date":"10-31-2022 19:00","Content":"Attention: Please take a look at the Top News update for important information for Medicare Advantage Payors final wave.","URL":"https://www.dexzcodes.com/palmetto/dex.nsf/DID/07860YUDBI","Target":null,"Color":"blue","Mode":"Standard\n","Priority":"no"}, {"DID":"criteebca4","Sites":"DEX","Start Date":"08-01-2022 08:07","End Date":"08-31-2022 19:00","Content":"Attention: Please take a look at the Top News update for important information for Medicare Advantage Payors sixth wave.","URL":"https://www.dexzcodes.com/palmetto/dex.nsf/DID/07860YUDBI","Target":"_self","Color":"blue","Mode":"Standard\n","Priority":"no"}

1. Program Overview

Published 02/03/2023

The following are frequently asked questions about the DEX™ Diagnostics Exchange Registry and Z-Code™ Program.

DEX is a web-based application designed to identify tests and help establish transparency between providers and payers, using evidence-based coverage determinations. This tool enables labs to confidentially share test information with participating payers online. Labs register as an entity on the platform and submit their tests for review. Please visit https://app.dexzcodes.com/login to login and use the platform.

Medicare contractors participating in the MolDX® program:
- JM, JJ A/B administered by Palmetto GBA
- JE, JF A/B administered by Noridian Healthcare Solutions
- J5, J8 A/B administered by WPS Government Health Administrators
- J15 A/B administered by CGS Administrators, LLC
- For more information and directions pertaining to the MolDX program, please visit their website at www.palmettogba.com/moldx
Medicare Advantage Programs: Participating payers will direct you to register in DEX and obtain Z-Codes if and when required. Current participating programs:
- United Healthcare
Other payers participating with DEX (Requirements may vary):
- Medical Mutual of Ohio
- Fallon Health
- Blue Cross® and Blue Shield® of North Carolina

Note: Please review applicable payer policies for specific CPT® codes.

Test Group Options	CPT Code Range*
*Molecular*
MoPath Tier 1	81105-81112, 81120-81121, 81161-81364, 81374, 81377, 81381, 81383
MoPath Tier 2	81400-81408
Genomic Sequencing Procedures	81410-81471, 81493
Unlisted	81479, 81599
MAAA codes	81504-81595, 0004M-0013M, 0016M, 0017M (DNA, RNA based molecular codes only)
PLA codes	Molecular codes only
*Microbiology Procedure* (DNA, RNA based tests only)
Unlisted	87999
Other	87800, 87801

*This list is subject to change.