Illinois Medicaid (HFS)

Medicaid

ABA billing requirements · Source: Illinois HFS — Community-Based Behavioral Services Handbook

Medium confidence

Verified 2026-03-01

Authorization Requirements

Requires prior auth Yes

Initial auth durationN/A

Renewal auth durationN/A

Submission deadlineN/A

Unit tracking cadenceTotal

Requires FBA Yes

Diagnostic eval validityN/A

Re-eval cadenceN/A

Documentation Requirements

Parent signatures required Yes

Start/stop times required Yes

Treatment plan componentsBaseline data, Target behaviors, Methods

Progress summary cadenceEvery 6 months

Policy Notes

The document mentions 'Prior Approval' for some services, but it's not explicitly stated if prior authorization is required for all ABA services. The document is a provider handbook for Community-Based Behavioral Services, which includes some ABA-related services.

CPT & Modifier Rules

CPT rules require a free account

View H-codes, modifiers, unit limits, and billing restrictions for Illinois Medicaid (HFS).

Official policy source:Illinois HFS — Community-Based Behavioral Services Handbook

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Data last verified: 2026-03-01 · Confidence: Medium · See our methodology

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