A C-SNP (Chronic Condition Special Needs Plan) is a Medicare Advantage plan that only people with certain chronic conditions can join. Diabetes, chronic heart failure, COPD and other chronic lung disorders, and cardiovascular disorders all qualify, along with 18 other condition categories in federal rules. To join, you need Medicare Part A and Part B, you must live in the plan's service area, and a doctor, physician assistant or nurse practitioner must confirm your condition. If you qualify, you are not limited to the fall enrollment window. You can join a C-SNP that serves your condition at any time of year.
This guide covers who qualifies for 2027 plans, how the diagnosis check works, what these plans cost, and the rules that catch people off guard, like losing your plan when the plan cannot verify your condition. It explains how the plan type works and does not recommend any company or plan.
If you are on Original Medicare and want to know how it covers ongoing care for several conditions, see our guide to Medicare coverage for multiple chronic conditions. This page is about the C-SNP plan type itself.
What a C-SNP Is
Special Needs Plans come in three types. Each one limits who can enroll:
| Plan type | Who can join |
|---|
| C-SNP (Chronic Condition SNP) | People with a qualifying severe or disabling chronic condition |
| D-SNP (Dual Eligible SNP) | People with both Medicare and Medicaid |
| I-SNP (Institutional SNP) | People who live in a nursing home or need that level of care at home |
A C-SNP is still Medicare Advantage. It covers everything Part A and Part B cover, and every SNP must include Medicare drug coverage (Part D). The difference is that the plan is built around one condition or a group of related conditions. Federal rules require each SNP to have a model of care approved through the National Committee for Quality Assurance, and to give each member a health risk assessment and an individualized care plan. In practice, that usually means a care coordinator, a provider network and a drug list chosen with your condition in mind.
C-SNPs are growing fast. KFF reports that about 1.7 million people were enrolled in C-SNPs in 2026, up 45% from 2025, and that 97% of them were in plans for people with diabetes or cardiovascular conditions.
Qualifying Conditions for 2027
Starting January 1, 2026, the list of conditions a C-SNP can target grew from 15 to 22 categories. That is the list in force for 2027 plans. It is written into federal regulation at 42 CFR 422.2:
| # | Condition category | Examples included |
|---|
| 1 | Chronic alcohol use disorder and other substance use disorders | |
| 2 | Autoimmune disorders | Rheumatoid arthritis, lupus, psoriatic arthritis, scleroderma, polymyalgia rheumatica |
| 3 | Cancer | |
| 4 | Cardiovascular disorders | Cardiac arrhythmias, coronary artery disease, peripheral vascular disease, valvular heart disease |
| 5 | Chronic heart failure | |
| 6 | Dementia | |
| 7 | Diabetes mellitus | |
| 8 | Overweight, obesity, and metabolic syndrome | |
| 9 | Chronic gastrointestinal disease | Chronic liver disease, fatty liver disease, hepatitis B and C, pancreatitis, IBS, inflammatory bowel disease |
| 10 | Chronic kidney disease | With or without dialysis, including end-stage renal disease |
| 11 | Severe hematologic disorders | Aplastic anemia, hemophilia, sickle-cell disease (not the trait), chronic venous thromboembolic disorder |
| 12 | HIV/AIDS | |
| 13 | Chronic lung disorders | Asthma, chronic bronchitis, COPD, emphysema, cystic fibrosis, pulmonary fibrosis, pulmonary hypertension |
| 14 | Chronic and disabling mental health conditions | Bipolar disorder, major depression, schizophrenia, PTSD, eating disorders, anxiety disorders |
| 15 | Neurologic disorders | ALS, epilepsy, MS, Parkinson's, polyneuropathy, fibromyalgia, chronic fatigue syndrome, spinal stenosis |
| 16 | Stroke | |
| 17 | Post-organ transplantation care | |
| 18 | Immunodeficiency and immunosuppressive disorders | |
| 19 | Conditions associated with cognitive impairment | Alzheimer's, intellectual and developmental disabilities, traumatic brain injury, mild cognitive impairment |
| 20 | Conditions with functional challenges | Spinal cord injuries, paralysis, limb loss, stroke, arthritis |
| 21 | Chronic conditions that impair vision, hearing, taste, touch, or smell | |
| 22 | Conditions that require continued therapy services to maintain function | |
Two cautions. First, a condition being on this list does not mean a plan for it exists where you live. Insurers choose which conditions to build plans around, and most target diabetes, heart failure, or cardiovascular disease. Second, the plan's own target condition is what counts. If the only C-SNP in your county is for diabetes, a COPD diagnosis does not get you in.
Combined-condition C-SNPs
Some C-SNPs cover a group of conditions that often occur together. For these approved groupings, you only need one of the conditions in the group to enroll:
- Diabetes and chronic heart failure
- Chronic heart failure and cardiovascular disorders
- Diabetes and cardiovascular disorders
- Diabetes, chronic heart failure, and cardiovascular disorders
- Stroke and cardiovascular disorders
- Anxiety associated with COPD
- Chronic kidney disease and post-kidney transplant care
- Substance use disorders and chronic mental health disorders
Some insurers also design their own multi-condition plans that are not on that list. For those, the plan must confirm that you have every condition in the combination, not just one.
C-SNPs for Diabetes, Heart Failure, and COPD
Diabetes. Diabetes plans are the most common type of C-SNP. Diabetes appears on its own and in three of the approved groupings, so in many counties you can choose between a diabetes-only plan and a combined diabetes and heart plan. Compare how each one covers your insulin and other drugs, test supplies, and visits with an endocrinologist.
Chronic heart failure. Heart failure has its own category and also appears in three groupings. Because heart failure and cardiovascular disorders are paired so often, a person with heart failure frequently has more C-SNP choices than someone with a less common condition. Check that your cardiologist and the hospital you would use are in network.
COPD. COPD sits under chronic lung disorders, along with emphysema, chronic bronchitis and asthma. One approved grouping pairs anxiety with COPD. Plans built for lung disease are much less common than diabetes and heart plans, so you may not have one in your area. Before you switch, confirm which inhalers are on the plan's drug list and whether it covers pulmonary rehab and oxygen equipment at your usual suppliers.
Who Is Eligible
You can join a C-SNP if all of these are true:
- You have Medicare Part A and Part B.
- You live in the plan's service area.
- You have the chronic condition, or one of the conditions in a grouping, that the plan serves.
- The plan confirms your condition with your current doctor, physician assistant or nurse practitioner.
There is no income or asset test. Age does not matter either, so someone under 65 who has Medicare because of a disability can join if they have a qualifying condition. People with end-stage renal disease have been able to join Medicare Advantage plans since 2021, and ESRD is part of the chronic kidney disease category.
How the Plan Checks Your Diagnosis
Under 42 CFR 422.52(f), a C-SNP must confirm your condition with your current health care provider. There are two ways to do this:
- Before you enroll: the plan contacts your doctor's office and gets the diagnosis confirmed first.
- With a pre-enrollment questionnaire: you, your provider, or a provider working for the plan fills out a questionnaire about your medical history, symptoms and medicines. Your current provider must then sign it to confirm the diagnosis.
If the questionnaire route is used and the plan cannot get confirmation by the end of your first month in the plan, it must disenroll you at the end of your second month and send you a notice within the first 7 days of that second month. If confirmation arrives any time before the end of the second month, you stay enrolled.
That is the trap. If your doctor's office is slow to return the form, you can lose the plan. When you apply, call your doctor's office, tell them a form is coming from the plan, and follow up until it is signed.
When You Can Join
| Enrollment window | Dates for 2027 coverage | What you can do |
|---|
| C-SNP Special Enrollment Period | Any time you qualify | Join a C-SNP that serves your condition |
| Annual Enrollment Period | October 15 to December 7, 2026 | Join, switch, or drop any Medicare Advantage or drug plan; coverage starts January 1, 2027 |
| Medicare Advantage Open Enrollment | January 1 to March 31, 2027 | If you are already in Medicare Advantage, switch plans once or go back to Original Medicare |
Medicare.gov describes the C-SNP Special Enrollment Period this way: "You can join anytime, but once you join, your chance to make changes using this SEP ends." So it gets you into a C-SNP outside the fall window, but it is not an open door for switching back and forth. After you join, you are generally limited to the usual windows unless another Special Enrollment Period applies to you.
If you stop qualifying
You can stay in a C-SNP only while you still have the condition it serves. If the plan finds you no longer meet its criteria but expects you to qualify again within 6 months, federal rules let it treat you as still eligible for at least 30 days and up to 6 months. If you are disenrolled, you get a Special Enrollment Period to join a drug plan or another Medicare Advantage plan. Medicare.gov says it starts the month you lose your special needs status and ends when you join another plan or 3 calendar months after your disenrollment takes effect, whichever comes first.
What a C-SNP Costs in 2027
Premiums, copays and extra benefits differ from plan to plan. Many C-SNPs charge no monthly plan premium, but you still pay your Part B premium. The federal limits below apply to every Medicare Advantage plan, C-SNPs included:
| Cost | 2026 | 2027 |
|---|
| Part B standard premium | $202.90 a month | Not yet published by CMS |
| Highest allowed in-network out-of-pocket maximum (Medicare Advantage) | $9,250 | $9,850 |
| Highest allowed combined in-network and out-of-network maximum | $13,900 | $14,800 |
| Part D out-of-pocket cap on covered drugs | $2,100 | $2,400 |
The out-of-pocket figures are the highest limits CMS allows. Many plans set a lower one, and each plan lists its own limit in its Summary of Benefits. The 2027 numbers take effect January 1, 2027.
For someone who sees specialists often, the out-of-pocket maximum may be the most important number on the page. Original Medicare has no yearly cap on what you pay for medical care unless you add a Medigap policy. Every Medicare Advantage plan, C-SNPs included, has one.
How to Compare and Join a C-SNP
- Confirm your diagnosis is in your records. Ask your doctor's office whether your chart lists your condition, such as diabetes, heart failure or COPD. The plan will be checking that same record.
- Find plans in your area. Use Medicare Plan Finder at medicare.gov/plan-compare, or call 1-800-MEDICARE (1-800-633-4227). Plan names often mention "C-SNP" or the condition they serve.
- Check your doctors and hospitals. Most C-SNPs are HMOs with a set network. Look up each doctor in the plan's provider directory, then call the office to confirm.
- Check your drugs. Enter every prescription in Plan Finder and look at tiers, prior authorization and step therapy rules for the drugs you take every day.
- Read the Summary of Benefits and the Evidence of Coverage. Look for the out-of-pocket maximum, specialist copays, the care coordination program, and any extra benefits the plan says are only for members with qualifying conditions.
- Enroll. Sign up on Medicare.gov, through the plan, or by phone. Your coverage usually starts the first day of the next month. During the fall window, it starts January 1, 2027.
- Follow up on verification. Make sure your provider signs and returns the plan's confirmation form before the end of your first month.
For free, unbiased help comparing plans, contact your State Health Insurance Assistance Program (SHIP) at shiphelp.org. SHIP counselors do not sell insurance.
If you have a Medigap policy now
Joining a C-SNP means leaving Original Medicare, and you cannot use a Medigap policy alongside a Medicare Advantage plan. If you drop Medigap and later want it back, in most states an insurer can review your health history and charge more or turn you down. The exception is a short list of guaranteed issue situations. One example: if this is your first time in Medicare Advantage, you generally have a 12-month trial right to go back. A chronic condition makes this decision weigh more, so talk to a SHIP counselor before you drop a Medigap policy.
If you have Medicaid too
If you have both Medicare and full Medicaid, a D-SNP may coordinate both programs better than a C-SNP. Our guide to dual eligible Medicare and Medicaid benefits explains how those plans work. If money is tight but you do not have Medicaid, Extra Help can lower your drug costs in any plan.
Frequently Asked Questions
What does C-SNP stand for?
C-SNP stands for Chronic Condition Special Needs Plan. It is a type of Medicare Advantage plan that only enrolls people with specific severe or disabling chronic conditions, such as diabetes, chronic heart failure, or chronic lung disorders like COPD.
Can I join a C-SNP outside of open enrollment?
Yes. If you have a condition a C-SNP in your area serves, you can join at any time of year using a Special Enrollment Period. That SEP ends once you join, so it does not let you keep switching plans.
Is COPD a qualifying condition for a C-SNP?
Yes. COPD is listed under chronic lung disorders in 42 CFR 422.2, along with asthma, chronic bronchitis, emphysema, cystic fibrosis, pulmonary fibrosis and pulmonary hypertension. You still need a C-SNP in your area that targets lung disorders, or one in the anxiety with COPD grouping.
Does high blood pressure qualify for a C-SNP?
High blood pressure on its own is not one of the 22 categories in 42 CFR 422.2. Cardiovascular disorders that are listed include arrhythmias, coronary artery disease, peripheral vascular disease and valvular heart disease. If you have high blood pressure along with diabetes or heart disease, you may qualify through that other condition.
Do C-SNPs include prescription drug coverage?
Yes. Every Special Needs Plan must include Medicare Part D drug coverage. In 2027, Part D caps what you pay for covered drugs at $2,400 for the year.
What happens if my doctor does not confirm my condition?
If the plan enrolled you based on a questionnaire and cannot get your provider's confirmation by the end of your first month, it must disenroll you at the end of your second month. Confirmation received before the end of the second month keeps you in the plan.
Is there an income limit for a C-SNP?
No. C-SNP eligibility depends on your chronic condition, your Medicare Part A and B enrollment, and where you live. Income matters only for separate programs, like Medicaid, Medicare Savings Programs or Extra Help.
Can I be under 65 and join a C-SNP?
Yes. If you have Medicare because of a disability or ESRD and you have a condition the plan serves, you can join a C-SNP in your area.
