A SNP, or Special Needs Plan, is a type of Medicare Advantage plan designed for people with specific health conditions, those who live in care facilities, or those who qualify for both Medicare and Medicaid. Unlike standard Medicare Advantage plans that accept any Medicare-eligible person, SNPs tailor their benefits, provider networks, and drug coverage to the particular needs of the group they serve. Nearly 7.3 million Medicare beneficiaries are currently enrolled in one.
There are three types of SNPs, each built around a different qualifying situation. Understanding which one fits your circumstances is the key to knowing whether this option is available to you.
The Three Types of SNPs
Every SNP falls into one of three categories based on who it serves:
- Dual Eligible SNPs (D-SNPs) are for people who have both Medicare and Medicaid. These are by far the most common, covering about 83% of all SNP enrollees. D-SNPs coordinate benefits between the two programs so you aren’t juggling separate coverage systems on your own.
- Chronic Condition SNPs (C-SNPs) are for people with specific severe or disabling chronic conditions. About 16% of SNP enrollees are in C-SNPs, a share that has grown rapidly from 10% just one year earlier.
- Institutional SNPs (I-SNPs) are for people who live in, or need the level of care provided in, a long-term care facility such as a nursing home. These cover about 2% of SNP enrollees.
To join any SNP, you need Medicare Part A and Part B, and you must live in the plan’s service area. Beyond that, each type has its own eligibility rules.
D-SNPs: For People With Medicare and Medicaid
If you qualify for both Medicare and Medicaid, you’re considered “dually eligible,” and a D-SNP is specifically designed for your situation. The biggest advantage is coordination. Instead of dealing with two completely separate programs with different rules, networks, and paperwork, a D-SNP works to bring those benefits together under one plan.
Medicaid eligibility comes in several forms, and D-SNPs accept a range of categories. These include full Medicaid beneficiaries, Qualified Medicare Beneficiaries (QMB), Specified Low-Income Medicare Beneficiaries (SLMB), and several other classifications. The specifics vary by state, because states have some flexibility in how they define eligibility levels. If you have both Medicare and Medicaid, most of your healthcare costs will already be covered between the two programs, and a D-SNP helps ensure nothing falls through the cracks.
Starting in 2027, new federal rules will require certain D-SNPs to issue a single integrated ID card that works for both Medicare and Medicaid, replacing the current system where enrollees often carry separate cards. These plans will also be required to conduct one combined health risk assessment instead of running separate ones for each program.
C-SNPs: For Specific Chronic Conditions
Chronic Condition SNPs are available only to people diagnosed with one of 15 approved conditions (some of which include subcategories). The full list covers a wide range of serious health issues:
- Heart and vascular conditions: chronic heart failure, coronary artery disease, cardiac arrhythmias, peripheral vascular disease, chronic venous thromboembolic disorder
- Lung conditions: asthma, chronic bronchitis, emphysema, pulmonary fibrosis, pulmonary hypertension
- Neurologic conditions: ALS, epilepsy, multiple sclerosis, Parkinson’s disease, Huntington’s disease, extensive paralysis, spinal stenosis, stroke-related neurologic deficit
- Mental health conditions: bipolar disorder, major depressive disorder, schizophrenia, schizoaffective disorder, paranoid disorder
- Autoimmune disorders: rheumatoid arthritis, systemic lupus erythematosus, polymyositis, polymyalgia rheumatica, polyarteritis nodosa
- Other conditions: diabetes, cancer (excluding pre-cancer or in-situ status), HIV/AIDS, dementia, end-stage liver disease, end-stage renal disease requiring dialysis, stroke, chronic alcohol and other drug dependence, and severe blood disorders like sickle-cell disease and hemophilia
Because these plans focus on a specific condition, they can structure their provider networks, care coordination, and prescription drug coverage around what that condition actually requires. A C-SNP for diabetes, for example, builds its benefits around the ongoing monitoring, medications, and specialist visits that diabetes management involves.
I-SNPs: For People in Long-Term Care
Institutional SNPs serve people who have lived in, or are expected to need, a facility-level of care for 90 days or longer. Qualifying facilities include skilled nursing facilities, long-term care nursing facilities, intermediate care facilities for individuals with intellectual disabilities, and inpatient psychiatric facilities.
The 90-day threshold is important. It doesn’t have to be 90 days you’ve already spent in a facility. If a care team determines you’re expected to need that level of care for 90 days or more, you can qualify. These plans are built around the realities of institutional care, where medical needs are constant and coordination between the facility’s staff and outside providers is critical.
How SNPs Differ From Standard Medicare Advantage
All SNPs are technically Medicare Advantage plans, meaning they’re offered by private insurance companies approved by Medicare. They must cover everything Original Medicare covers. But several features set them apart.
SNPs are required to create individualized care plans for their members and conduct health risk assessments. This means the plan actively evaluates your health situation and builds a care strategy around it, rather than simply processing claims as they come in. New federal rules are also formalizing the timelines for when these assessments and care plans must happen, and requiring that you or your representative be involved in developing them.
SNPs also include Medicare Part D prescription drug coverage. Every SNP bundles drug coverage into the plan, so you won’t need to enroll in a separate Part D plan.
When You Can Enroll
The enrollment windows for SNPs are more flexible than for standard Medicare Advantage plans. If you have a qualifying chronic condition, you can join a C-SNP that serves your condition at any time during the year, not just during the annual enrollment period. Once you’ve joined, that particular enrollment opportunity closes, but the initial window has no seasonal restriction.
For D-SNPs, people with full Medicaid benefits can join or switch to an integrated D-SNP once per calendar month, with the change taking effect on the first of the following month. This gives dually eligible beneficiaries significantly more flexibility than standard Medicare enrollees.
If you live in or recently moved out of an institution like a nursing home, that also triggers an enrollment opportunity. Other life events that open enrollment windows include moving out of your plan’s service area, losing Medicaid eligibility (which would let you switch to a different type of plan), being released from incarceration, or losing employer or union coverage.
What Happens If You Lose Eligibility
If your circumstances change and you no longer meet the qualifying criteria for your SNP, the plan will eventually disenroll you. When that happens, you get a window to switch to a standard Medicare Advantage plan or a standalone Medicare Part D drug plan. That window starts the month you lose your special needs status and lasts until you join another plan or three calendar months after you’re involuntarily moved out of the SNP, whichever comes first.
For D-SNP members, this could mean losing Medicaid eligibility. For C-SNP members, it could mean a change in diagnosis. In either case, you won’t be dropped without an opportunity to find alternative coverage.