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2019-28: Medicaid Will Require CLIA Number on Laboratory Service Claims

Date: 05/10/19

Effective August 1, 2019, Louisiana Department of Health will require all Medicaid providers to include a valid Clinical Laboratory Improvement Amendments (CLIA) number on all laboratory service claims. Claims submitted with an absent, incorrect or invalid CLIA number will deny.

For claims submitted using the CMS-1500 form, the CLIA number will be required in box 23.  Providers should refer to the CMS 1500 Billing Instructions under the Billing Information link at, where complete instructions will be provided.

Louisiana Healthcare Connections will implement the required system updates to accommodate these changes no later than August 1, 2019. 

Please refer to Informational Bulletin 19-8 (PDF) for additional information.