Maine Medicaid payments for Administrative, Miscellaneous and Investigational services up 14.4% in 2024

In 2024, Maine Medicaid payments for services within the Administrative, Miscellaneous and Investigational category totaled $301,324, according to the U.S. Department of Health and Human Services Medicaid Provider Spending database. This figure reflects an increase of 14.4% from the prior year, when claims amounted to $263,382.

Medicaid, operated by states and funded in partnership with federal and state governments, provides public health insurance coverage to low-income populations, seniors, children, and individuals with disabilities, making it a major component of the U.S. health care landscape.

Because Medicaid is taxpayer-funded, variations in billing demonstrate how community health care resources are used.

The “Administrative, Miscellaneous and Investigational” group covers a range of Medicaid services defined by the type of care, following standardized HCPCS and CPT code designations. To assemble this analysis, each billing code was assigned to one service category using code prefixes and numeric intervals, allowing similar services to be grouped for evaluation without double counting, which maintains accurate rankings across different years.

Some categories include several underlying service types. Where this occurs, the category represents related services commonly billed together through Medicaid, such as diagnostic testing, office appointments, or therapeutic procedures.

Although these payments for Administrative, Miscellaneous and Investigational services occurred throughout Maine, a few ZIP codes accounted for most of the amounts. For 2024, the top ZIP codes in payment volume were 04953, with $169,500 (56.3% of the total), followed by 04240 at $107,441 (35.7%), and 04330 with $6,985 (2.3%).

Combined, the three leading ZIP codes represented 94.2% of all Medicaid expenditures for the Administrative, Miscellaneous and Investigational category in Maine during 2024.

By comparison, overall Medicaid payments for all categories in the state increased 1.3% between 2023 and 2024.

Medicaid spending saw increases across multiple areas, and the Administrative, Miscellaneous and Investigational grouping ranked among the top 20 highest payment categories statewide in 2024.

Centers for Medicare & Medicaid Services data showed combined federal and state Medicaid expenses reached about $871.7 billion in fiscal year 2023—approximately 18% of total U.S. health spending—and have increased sharply from $613.5 billion in 2019, prior to the COVID-19 pandemic.

This surge marks about 40% growth over a short span, mainly due to expansions in coverage and service use during and after the pandemic years.

Recent federal legislation passed under the Trump administration proposed major reductions in federal Medicaid outlays and structural changes to the program. The “One Big Beautiful Bill Act”, signed in 2025, is expected to reduce federal Medicaid expenditures by more than $1 trillion over 10 years, introduce work requirements, and increase cost sharing. These measures could limit enrollment and shift some expenses to states, potentially constraining federal support even as Medicaid continues serving millions nationwide.

Figures for this story come from the U.S. Department of Health and Human Services Medicaid Provider Spending database. The original source data are available here.