Short-term limited-duration insurance (often sold as “short-term medical”) is temporary coverage—commonly weeks to several months, sometimes renewable under state and federal rules that change. Carriers and brokers market it as a bridge between jobs or semesters. It is not the same as ACA major medical, Marketplace plans, employer group coverage, or COBRA.
If you are shopping during open enrollment, start with Health insurance open enrollment and the four cost numbers in Health insurance deductibles. Membership “health shares” are a different non-insurance product—Health care sharing ministries.
What it usually is (and is not)
| Feature | Typical short-term medical | ACA major medical |
|---|---|---|
| Pre-existing conditions | Often excluded or waiting-period limited | Covered (with plan rules) |
| Essential health benefits | May omit maternity, mental health, Rx depth | Required categories |
| Annual / lifetime dollar caps | Possible on some policies | Prohibited on ACA plans |
| Guaranteed issue | Usually medical underwriting / apps | Marketplace/employer rules differ |
| Subsidies | No premium tax credits | Possible on Marketplace |
State rules vary: some states restrict short-term sales tightly; others allow longer durations. Read the outline of coverage, not the Facebook ad.
Common gap list
- Pre-existing condition exclusions — Conditions you had before the policy may not be covered for the whole term.
- Benefit caps — Per-illness or annual maximums that look large until an ICU stay.
- Narrow networks — Out-of-network balance bills after an ER visit (networks; Medical bills).
- Prescription limits — Formulary thinner than a Marketplace silver plan (Rx coverage).
- No subsidy — A cheap sticker premium can still cost more than a subsidized Marketplace plan.
- Renewal risk — Re-underwriting or denial when you try to extend after a new diagnosis.
Worked example: bridge month after a layoff
Priya leaves a job on March 31. COBRA would continue her Blue Cross employer plan for ~102% of full premium—about $650/month for her alone. A broker pitches a 90-day short-term policy for $180/month with a $5,000 deductible and a pre-existing exclusion.
| Path | Monthly cost | If Priya’s known asthma flares into ER + admit |
|---|---|---|
| COBRA (same network/docs) | ~$650 | Covered under existing plan rules after deductible/OOP |
| Short-term policy | ~$180 | Asthma may be excluded as pre-existing; Priya faces facility + physician bills |
| Marketplace special enrollment | Often lower than COBRA with subsidy | ACA protections; compare SBCs before the deadline |
Priya compares COBRA vs Marketplace special enrollment first, treats short-term as a last-resort bridge only if she has no known conditions, understands every exclusion, and can cash-flow a large deductible. Hospital charity care and payment plans remain separate tools (Hospital financial assistance; Medical payment plans).
When a short-term policy might still be discussed
- Healthy applicant with a documented short gap and no subsidy-eligible Marketplace option yet
- Travel or waiting period where major medical truly cannot start for a few weeks
- Explicit understanding that it is not comprehensive coverage
“I’m young and healthy” is not a guarantee—accidents and new diagnoses happen inside 90 days.
Checklist
- Confirm whether you qualify for Marketplace special enrollment, employer coverage, Medicaid, or COBRA before short-term.
- Read exclusions for pre-existing conditions, maternity, mental health, and prescriptions.
- Note maximum benefits, deductible, and out-of-pocket in dollars.
- Check network hospitals and your PCP.
- Compare total premium + worst-case bill vs a subsidized ACA plan.
- Keep denial/approval letters; appeal paths differ from ACA plans.
- Calendar the end date so you do not lapse into an uninsured month.
Educational only. Not insurance, medical, or tax advice. Not an offer of coverage. Short-term rules vary by state and year; read the policy and official Marketplace/COBRA materials.