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Illinois Medicaid - HFSMedicaid · Billing Codes · Provider Notice · ILMedium impact

Ambulatory Procedures Listing (APL) Code Additions Retroactive to July 1, 2004

Act
immediately
Effective date
Jul 1, 2004
Identified
Jun 21, 2026

Summary

Illinois Department of Healthcare and Family Services added new HCPCS/CPT codes to the Ambulatory Procedures Listing (APL) for hospital outpatient and ambulatory surgical treatment centers, retroactive to July 1, 2004. Providers must use these additional codes when billing for services performed on or after July 1, 2004.

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What to do

immediately · 3 steps
01Billing team must access the Illinois HFS website to download the updated APL code list and implement the additional HCPCS/CPT codes for all hospital outpatient and ASTC claims with dates of service on or after July 1, 2004.
02Update billing software and share code additions with software vendors and IT departments.
03Review and resubmit any denied claims from July 2004 onward that may now be covered under the expanded code set.

Original notice

Ambulatory Procedures Listing (APL) Code Additions Retroactive to July 1, 2004
hfs.illinois.gov · Always check the source before changing claims.
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Related changes

See all Illinois Medicaid - HFS changes →
Changes to the Ambulatory Procedures Listing (APL)MediumEffective Oct 1, 2002 · Provider NoticeAmbulatory Procedures Listing (APL) Conversion to Health Care Procedure Coding System (HCPCS) Procedure Codes Policy and Billing Changes for HIPAA ComplianceHighNo effective date · Provider NoticeUpdates to the Ambulatory Procedures Listing (APL) and Expensive Drugs and Devices Listing for January 1, 2006MediumEffective Jan 1, 2006 · Provider NoticeUpdates to the Ambulatory Procedures Listing (APL) for January 1, 2007MediumEffective Jan 1, 2007 · Provider NoticeBrowse every Illinois Medicaid - HFS change in the policy list

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