Delaware Medicaid and CHIP: Eligibility, Coverage, and Enrollment

Delaware's Medicaid and Children's Health Insurance Program (CHIP) together cover roughly 1 in 4 Delaware residents, making them among the most consequential health policy instruments operating at the state level. This page explains how eligibility is determined, what services the programs cover, how enrollment works, and where the rules differ between program categories. It draws on program guidance from the Delaware Department of Health and Social Services (DHSS) and federal Medicaid statutes under Title XIX and Title XXI of the Social Security Act.

Definition and scope

Delaware Medicaid — administered by the Delaware Department of Health and Social Services, Division of Medicaid and Medical Assistance (DMMA) — is a joint federal-state program that funds health coverage for low-income individuals who meet specific categorical and financial criteria. The federal government sets minimum eligibility standards and shares program costs; Delaware administers the program, sets benefit levels above those minimums, and funds the state share.

CHIP operates as a companion program, covering children in families whose income is too high for Medicaid but who lack access to affordable private insurance. In Delaware, CHIP is administered through Delaware Healthy Children Program (DHCP), which is operated within the same DMMA infrastructure.

The scope is broad but bounded. Medicaid in Delaware covers acute care, behavioral health, long-term services and supports, dental, vision, and prescription drugs for eligible populations. It does not cover services deemed not medically necessary, and it does not replace Medicare for dual-eligible individuals — those enrolled in both programs receive coordinated coverage through specific rules that govern payment sequencing.

Delaware's Medicaid expansion under the Affordable Care Act (ACA), implemented in 2014, extended eligibility to adults under 65 with income at or below 138% of the Federal Poverty Level (FPL) (Kaiser Family Foundation, State Health Facts). This placed Delaware among the 40 states (plus the District of Columbia) that had adopted expansion as of 2023.

How it works

Eligibility determination runs through a multi-factor process that considers household income, household size, citizenship or immigration status, and in some cases residency duration. Delaware uses Modified Adjusted Gross Income (MAGI) methodology for most groups — a standardized income calculation mandated by the ACA that counts wages, self-employment income, and certain other income sources while excluding Social Security income for most calculations.

Key income thresholds by population group (expressed as percentage of FPL, per DMMA eligibility guidelines):

  1. Adults aged 19–64 (expansion population): Up to 138% FPL
  2. Pregnant individuals: Up to 212% FPL
  3. Children ages 1–18 (Medicaid): Up to 133% FPL
  4. Children under age 1: Up to 200% FPL
  5. CHIP (Delaware Healthy Children Program): 200% to 212% FPL for children
  6. Aged, blind, and disabled adults: Subject to different asset tests and SSI-linked criteria outside MAGI methodology

Applications are submitted through Delaware's ASSIST portal or through paper application to DHSS. Eligibility determinations are required within 45 days for most applicants, or 90 days when disability determinations are involved, under 42 CFR § 435.912.

Once enrolled, most Delaware Medicaid beneficiaries are assigned to managed care through Diamond State Health Plan or Diamond State Health Plan Plus, operated under contracts with managed care organizations. Fee-for-service Medicaid applies to specific populations, including some dual-eligibles and individuals in waiver programs.

Common scenarios

A family of three with income at 160% FPL: The parents qualify under Medicaid expansion (below 138% FPL if only two adults, but household income calculations depend on the full unit). The child qualifies under the children's Medicaid threshold. This scenario frequently triggers household-splitting determinations where different members qualify under different program categories.

A 22-year-old former foster youth: Delaware extends Medicaid coverage to former foster care youth up to age 26 without income testing, as required by the Fostering Connections Act and the ACA (42 USC § 1396a(a)(10)(A)(i)(IX)). This population does not need to meet the standard income threshold.

A legal permanent resident who arrived within the past five years: Federal law (8 USC § 1612) bars most newly arrived lawful permanent residents from federally funded Medicaid for five years. Delaware does not operate a state-funded coverage bridge program for this population, which means a coverage gap applies. The five-year bar does not apply to emergency Medicaid services.

A senior with Medicare and low income: Dual-eligible individuals may qualify for Medicare Savings Programs that use Medicaid funds to pay Medicare premiums and cost-sharing. Delaware's Specified Low-Income Medicare Beneficiary (SLMB) program covers Part B premiums for individuals with income between 100% and 120% FPL.

Decision boundaries

The practical eligibility question most households face is not whether they qualify broadly, but which specific program or coverage category applies — and that boundary matters because benefits, cost-sharing, and managed care assignments differ.

Medicaid vs. CHIP for children: A child at 150% FPL falls into Medicaid. A child at 205% FPL falls into CHIP. CHIP in Delaware carries modest cost-sharing (copayments for some services); Medicaid does not impose premiums or enrollment fees. Both cover dental, vision, and mental health services for children.

MAGI vs. non-MAGI populations: Aged, blind, and disabled individuals are evaluated under non-MAGI rules that include asset limits. A 67-year-old with $800 in monthly income and $12,000 in savings may qualify for full dual-eligible benefits under rules that a 35-year-old with identical income would not face.

Scope limitations: This page covers Delaware state-administered Medicaid and CHIP only. Federal Medicare rules, employer-sponsored insurance regulations, and private market ACA marketplace subsidies are governed by separate federal frameworks and fall outside DMMA's administrative authority. For broader context on how these programs fit within Delaware's health services infrastructure, see Delaware State Health Services.

Delaware's Medicaid program is one piece of a larger state government apparatus described on the Delaware State Authority home page. The interplay between Medicaid funding, state budget allocations, and legislative appropriations is covered under Delaware State Budget.

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