Idaho’s Medicaid expenditures for the Administrative, Miscellaneous and Investigational service category reached $21,021 in 2024, based on information from the U.S. Department of Health and Human Services Medicaid Provider Spending database. This figure represents a 19.8% increase from the prior year, when providers billed $17,540 in claims.
Medicaid is a state-administered public insurance program that is funded both federally and by state governments. It serves low-income residents, seniors, children and people with disabilities, making it a cornerstone of the U.S. health care system.
Because taxpayer dollars fund Medicaid, shifts in local billing show how public health care funds are distributed within a community.
The “Administrative, Miscellaneous and Investigational” designation groups Medicaid charges by care type, following standard HCPCS and CPT code classifications. For this report, each billing code was placed in one service category using uniform prefixes and number ranges, facilitating analysis of related services and ensuring no duplication or misranking over time.
Some categories can cover multiple types of services. When this occurs, the category includes closely related care types typically billed together in Medicaid, such as office visits, diagnostic assessments and therapeutic services.
While these service payments occurred statewide, the majority were concentrated in just a few ZIP codes. In 2024, ZIP Code 83646 reported $20,982 in Medicaid payments for these services (99.8% of the total), while ZIP Code 83814 accounted for $32 (0.2% of the total).
Together, these two ZIP codes represented 100% of Medicaid spending on Administrative, Miscellaneous and Investigational services in the state for the year.
Statewide, all Medicaid claim category payments grew 7.6% from 2023 to 2024.
Although spending increased for several categories, the Administrative, Miscellaneous and Investigational group ranked among the top 22 service categories for overall payments in 2024.
According to the Centers for Medicare & Medicaid Services, total federal and state Medicaid costs were about $871.7 billion in fiscal year 2023, close to 18% of all national health care expenditures, marking a sharp rise from $613.5 billion in 2019, ahead of the COVID-19 pandemic.
This roughly 40% increase over several years has been largely attributed to higher enrollment and utilization during and after the pandemic.
Recent federal budget measures under the Trump administration included major proposals for reducing federal Medicaid support and altering the program. The “One Big Beautiful Bill Act,” enacted in 2025, is anticipated to cut more than $1 trillion from federal Medicaid allocations over a decade and contains provisions such as work requirements and increased cost-sharing that may lessen coverage and federal funds for certain beneficiaries. These policy changes are expected to require states to cover more of the program’s costs and slow the growth of federal aid, even as Medicaid serves tens of millions of Americans.
| Year | Total Medicaid Payments | % Change From Previous Year |
|---|---|---|
| 2024 | $21,021 | 19.8% |
| 2023 | $17,540 | -50.7% |
| 2022 | $35,571 | 25.7% |
| 2021 | $28,289 | -40.7% |
| 2020 | $47,733 | 26.4% |
| 2019 | $37,759 | 21.6% |
| 2018 | $31,063 | N/A |
| ZIP Code | Medicaid Payments | % of State Total |
|---|---|---|
| 83646 | $20,982 | 99.8% |
| 83814 | $32 | 0.2% |
| 83350 | $7 | <0.1% |
Data in this article were sourced from the U.S. Department of Health and Human Services Medicaid Provider Spending database. The original dataset is available here.
