Short-term medical (STM) insurance provides temporary health coverage for individuals in coverage gaps—typically lasting 1 to 36 months depending on the state. STM plans are underwritten by insurance carriers, administered by third-party administrators, and sold by licensed agents. They offer lower premiums than ACA marketplace plans, faster enrollment, and flexible term lengths, but they are not ACA-compliant and typically do not cover pre-existing conditions.
Premier Health Solutions is a third-party administrator based in Dallas, Texas that has been administering health and supplemental benefit plans, including short term medical, since 2012. PHS works with independent agents and agencies across 48+ states, partnering with A-rated insurance carriers. This guide explains how STM plans work from enrollment to claims, who they’re designed for, what they cover, and how they compare to other coverage options.
What Is Short-Term Medical Insurance?
Short-term medical insurance, also known as Short-Term Limited Duration Insurance (STLDI), is a type of health coverage designed for temporary situations—not as a permanent replacement for comprehensive health insurance. STM plans are underwritten by insurance carriers who bear the financial risk, administered by TPAs who handle the enrollment platform, billing, compliance, and member services, and sold by licensed independent agents.
The “short-term” in the name refers to the coverage duration, which varies by state. Some states allow STM plans of up to 36 months with renewal options. Others limit plans to 3 or 6 months. A small number of states prohibit STM plans entirely.
Are Short-Term Medical Insurance Plans Regulated?
STM plans are regulated at both the federal and state level but are not subject to all Affordable Care Act (ACA) requirements. This is what allows them to offer lower premiums and faster enrollment—but it also means they operate under different rules than ACA marketplace plans. For product-specific details, visit the PHS short-term medical page.
What Does Short-Term Medical Insurance Cover?
STM plans typically cover doctor visits, emergency room care, hospitalization, surgery, diagnostic testing, lab work, and prescription drugs. The specific coverage details, benefit limits, deductibles, and copays vary by plan and carrier.
| Coverage Area | Typically Covered by STM | Typically NOT Covered |
|---|---|---|
| Doctor Visits | Yes — primary care and specialist visits | May require deductible first |
| Emergency Care | Yes — ER visits and urgent care | Copays and deductibles apply |
| Hospitalization | Yes — inpatient and outpatient surgery | Benefit limits may apply and will be subject to any deductible or coinsurance |
| Prescriptions | Varies — some plans include Rx coverage | Specialty drugs often excluded |
| Lab & Diagnostics | Yes — blood work, imaging, testing | Preventive screenings may be limited |
| Pre-Existing Conditions | Not covered | Conditions diagnosed before enrollment are excluded |
| Maternity | Not covered | Pregnancy and related care excluded |
| Mental Health | Varies by plan | Coverage may be limited or excluded |
| Preventive Care | Varies by plan | Annual physicals and screenings may not be covered |
The most important thing to understand about STM coverage is that pre-existing conditions are excluded. If you have a medical condition that was diagnosed or treated before your enrollment date, STM will not cover treatment for that condition. This is the primary tradeoff for lower premiums and faster enrollment.
Who Is Short-Term Medical Insurance Designed For?
STM is designed for healthy individuals experiencing temporary coverage gaps who need affordable bridge coverage. The most common scenarios include:
| Situation | How STM Helps |
|---|---|
| Between Jobs | Coverage bridge after leaving an employer plan. Significantly more affordable than COBRA, which can cost $600+ per month for individual coverage. |
| Self-Employed | Predictable premiums without the higher cost of individual ACA marketplace plans. Flexible terms that match your business cycle. |
| Early Retirees | Bridges the gap between retirement and Medicare eligibility at age 65. Coverage for 1–36 months depending on state. |
| Missed Open Enrollment | Available year-round, unlike ACA marketplace plans which require enrollment during specific periods or qualifying life events. |
| Young Adults | Affordable coverage after aging off a parent’s plan at 26. Lower premiums reflect the lower health risk of younger enrollees. |
| Gig Workers | Flexible, month-to-month or term-based coverage for independent contractors without employer-sponsored benefits. |
How Long Can You Have Short-Term Medical Insurance?
STM plan duration depends on your state’s regulations. At the federal level, STM plans can last up to 364 days with renewals up to 36 months total. However, individual states set their own limits. Some allow the full 36 months. Others cap plans at 3, 6, or 12 months. A small number of states—including California, Massachusetts, New Jersey, New York, and Washington—prohibit STM plans entirely.
When your STM plan reaches its maximum term, you’ll need to either enroll in a new STM plan (if your state allows), transition to an ACA marketplace plan during open enrollment, or secure coverage through an employer or other source. Your agent or TPA can help you plan this transition.
How to Enroll in Short-Term Medical Insurance
STM enrollment is faster and simpler than ACA marketplace enrollment—coverage can start as soon as the next day. Here’s how the process typically works:
| Step | Action | Details |
|---|---|---|
| 1 | Find an Agent | Work with a licensed independent insurance agent who offers STM plans. Your agent helps you compare options and select the right plan for your situation. |
| 2 | Apply | Complete an application that includes basic health questions. Unlike ACA plans, STM applications typically include medical underwriting—your health history affects eligibility and pricing. |
| 3 | Get Approved | Approval can happen same-day for most applicants. Carriers review your application and issue a coverage decision quickly. |
| 4 | Coverage Begins | Once approved, coverage can start as soon as the next day. You’ll receive plan documents, an ID card, and information about how to access your benefits. |
| 5 | Pay Premiums | Monthly premiums are billed by the TPA administering your plan. For PHS-administered plans, this appears as “PHS-HEALTH-BILL” on your bank statement. |
Short-Term Medical vs. ACA Marketplace Plans
STM and ACA marketplace plans serve different purposes and operate under different rules. Neither option is universally better—the right choice depends on your health status, budget, coverage duration needs, and whether you have pre-existing conditions. A licensed agent can help you evaluate both options for your specific situation. Here’s how they compare on the factors that matter most:
| Factor | Short-Term Medical | ACA Marketplace |
|---|---|---|
| Premiums | 50–70% lower than comparable ACA plans | Higher, but subsidies may apply based on income |
| Enrollment | Year-round, coverage can start next day | Open enrollment period only (exceptions for qualifying life events) |
| Pre-Existing Conditions | Not covered | Covered — cannot be denied or charged more |
| Essential Health Benefits | Not required to cover all 10 ACA categories | Must cover all 10 essential health benefit categories |
| Medical Underwriting | Yes — health history affects eligibility | No — guaranteed issue regardless of health |
| Duration | 1–36 months depending on state | 12-month plan year |
| Best For | Healthy individuals in temporary coverage gaps | Anyone needing comprehensive, long-term coverage |
How PHS Administers Short-Term Medical Plans
PHS administers short-term medical plans on behalf of A-rated insurance carriers, handling enrollment, billing, compliance, and member services. Independent agents use a custom technology platform to quote, enroll, and track STM plans alongside supplemental products like critical illness, accident, and fixed indemnity coverage—all through a single administrative relationship.
For agents, PHS provides fast enrollment tools, accurate commission processing, and compliance support across every state where STM plans are available. Learn more about PHS’s TPA services or explore how to become a PHS agent.
Short-term medical insurance serves a specific and growing need—affordable, temporary health coverage for people in transition. Understanding how STM works, what it covers, and who it’s designed for helps consumers make informed decisions and helps agents serve their clients with clarity and confidence.
