May 8, 2026
Following are billing reminders for ABS providers. Per Illinois Medicaid billing guidelines, ABS providers must:
- Ensure the attested provider rendering the services is appropriately reported as the rendering provider on Medicaid member claims.
Also report the attested supervising ABS clinician as the supervising provider on claims that identify a registered behavior technician as the rendering or servicing provider.
Why it matters: Claims received with a rendering provider who differs from the authorization or medical record documentation may be denied for noncompliance.
More information: Refer to the table below for the appropriate location to report each provider on the claim.
Provider Field |
Paper Claim Form (CMS-1500) |
Electronic Claim (837P Transaction) |
|
Loop |
Segment |
||
Rendering |
Box 24J |
2310B |
NM1 |
Supervising* |
Box 17 |
2310D |
NM1 |
*Required when the rendering provider is a registered behavior technician
Resources: For updates to ABS coverage and provider qualifications, refer to the Illinois Department of Healthcare and Family Services provider notices from Sept. 30, 2021, and Aug. 24, 2023.
If you have claim-related questions or need more information on member benefits or services, call the number on the member’s ID card.
The fact that a service or treatment is described in this material is not a guarantee that the service or treatment is a covered benefit, and members should refer to their certificate of coverage for more details, including benefits, limitations and exclusions. Regardless of benefits, the final decision about any service or treatment is between the member and their health care provider.