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Does Medicaid Cover ABA Therapy in Delaware?

Published April 8, 2026

Yes — Delaware Medicaid (Diamond State Health Plan) covers ABA therapy for children and teens under 21 with an autism diagnosis. Delaware is a small state with a growing ABA provider network in Wilmington and Newark. Here's how to access coverage.

Key takeaways

  • Diamond State Health Plan covers ABA for all children under 21 with autism
  • Managed care plans include Highmark Health Options and UnitedHealthcare
  • Delaware's commercial insurance mandate covers children through age 21
  • Wilmington and Newark have the largest ABA provider networks in DE
  • Adults may access services through the Delaware Lifespan Network waiver

Delaware Medicaid managed care plans

Delaware's Diamond State Health Plan delivers Medicaid services through managed care organizations:

Delaware's autism insurance mandate

Delaware law (18 Del. C. § 3571F) requires fully-insured commercial health plans to cover ABA therapy for individuals with autism through age 21. This is one of the higher age caps in the mid-Atlantic region. Coverage includes diagnostic evaluation and behavioral health treatment.

How to access ABA through Delaware Medicaid

  1. Confirm your Diamond State Health Plan at dhss.delaware.gov/dhss/dmma or call 1-800-372-2022.
  2. Get an autism diagnosis from a licensed professional.
  3. Contact your managed care plan for in-network ABA providers, or search FindABA.
  4. Complete prior authorization — typically 7–14 days for approval.
  5. Services begin at no cost to you.

Delaware resources

Find Delaware ABA providers that accept Medicaid

FindABA lists ABA providers in Delaware showing accepted plans including Diamond State Health Plan, Highmark Health Options, and UnitedHealthcare.

Search Delaware providers →