One of the most common worries we hear about Medicare Advantage is simple: “What if I need care and the plan won’t pay for it?” It’s a fair question. A Medicare Advantage HMO (Health Maintenance Organization) works differently from Original Medicare, and two of the biggest differences are referrals and prior authorization.
Understanding how they work before you enroll, not after you need care, can take a lot of the uncertainty out of choosing a plan. Here’s a plain-English walkthrough.
Referrals and Prior Authorization Are Not the Same Thing
People often use these terms as if they mean the same thing, but they’re two separate steps.
- A referral is a recommendation from your primary care physician (PCP) to see a specialist, such as a cardiologist or a dermatologist. In most HMOs, your PCP is the starting point for your care.
- Prior authorization is an approval from your health plan, given before you receive a certain service, confirming the plan agrees it’s medically necessary and will cover it.
Some services need a referral, some need prior authorization, some need both, and many need neither. Which is which depends on your specific plan, which is why it pays to ask.
How Referrals Typically Work in an HMO
In a Medicare Advantage HMO, you choose a primary care physician from the plan’s network. When you need care beyond what your PCP can provide, they refer you to a specialist who is also in the network. If you’d like a refresher on the basics of how this type of plan is built, our Medicare Advantage HMO page and our guide to what a Medicare Advantage HMO plan is cover the fundamentals.
A few things worth knowing:
- Some plans allow you to see certain specialists, or receive certain routine services, without a referral. Check your plan’s rules instead of assuming.
- Seeing a specialist without a required referral can mean the plan doesn’t cover the visit, leaving you with the bill.
- Emergency care doesn’t require a referral or approval. If you believe your health is in serious danger, get help first and sort out the paperwork afterward.
What Prior Authorization Usually Applies To
Plans commonly ask for approval before covering certain higher-cost or specialized services. Depending on the plan, that might include certain imaging tests, procedures, hospital admissions that aren’t emergencies, some therapies, and some prescription medications.
There’s no single universal list. Every plan sets its own approval rules within Medicare’s requirements, and those rules can change from year to year. That’s why your plan’s own materials, and a conversation with someone who can read them alongside you, matter more than any general rule of thumb.
In most cases, your doctor’s office handles the request. They submit the information to the plan, and the plan responds with a decision. You usually don’t have to do the paperwork yourself, but it’s smart to ask your doctor’s office whether an approval is needed before scheduling a test or procedure.
What Can Go Wrong
Most approvals go through without a problem, but delays and denials do happen. Common reasons include:
- The request is missing information the plan needs
- The plan doesn’t consider the service medically necessary based on what it received
- The provider isn’t in the plan’s network
- The approval step was skipped entirely
Knowing these possibilities in advance helps you ask the right questions, and it helps you stay calm if a denial letter ever arrives.
What to Do If a Service Is Denied
A denial isn’t necessarily the final word. If your plan denies a request, you generally have the right to challenge the decision.
- Read the denial notice carefully. It should explain the reason for the decision and how to appeal.
- Talk to your doctor’s office. They may be able to send additional information or explain why the service is medically necessary.
- File an appeal. You or your doctor can ask the plan to reconsider. If your health could be seriously affected by waiting, you can ask for a faster review.
- Pay attention to deadlines. Appeals have time limits, and the notice will tell you what applies to your situation.
- Know there are further steps. If the plan upholds its decision, additional levels of review exist, including an independent review.
If you’re not sure where to start, call us. We can’t file the appeal for you, but we can help you understand your notice and your next steps.
Questions to Ask Before You Enroll
If you’re comparing Medicare Advantage plans, these questions can reveal a lot about how a plan works in everyday life:
- Which of my current doctors and specialists are in the plan’s network?
- Which services does this plan require approval for?
- Do I need a referral to see a specialist, or are there exceptions?
- What does the plan cover if I’m traveling or away from home? Our post on traveling with Medicare goes into more detail.
- What will my costs look like for specialist visits and procedures? You can read more in what you’ll pay out of pocket for Medicare Advantage.
Writing these down before a consultation helps you compare plans fairly instead of relying on a flyer or a phone call from a stranger.
Is an HMO Right for You?
HMOs often come with lower monthly premiums and a coordinated approach to care, and many people appreciate having a PCP who helps manage everything. The trade-off is that you generally need to stay within the network and follow the plan’s referral and approval rules.
Some people prefer more flexibility. If that sounds like you, take a look at how a Medicare Advantage PPO plan differs. And if your doctor or hospital network changes, you may want to review your options too, as we explained in our guide to the LVHN and UnitedHealthcare split.
Local Help in Allentown and Kingston
There isn’t one “best” plan. The right fit depends on your doctors, your medications, your budget, and how you like to get care. As an independent agency, we’re not tied to any single carrier, so we compare your options side by side based on what matters to you.
Using our 4E process: Evaluate, Educate, Endorse, Enroll, we look at your current coverage, explain how each option handles referrals and approvals in plain English, and recommend what fits. If you’re looking at Medicare Advantage plans in Allentown, our Cedar Crest Boulevard office is ready to help. If you’re comparing Medicare Advantage plans in Kingston, our Pierce Street office can walk you through your choices, too.
As a veteran-owned agency with more than 20 years of experience, we take the time to answer your questions and never pressure anyone into a decision.
Schedule a consultation today at the office closest to you, or explore our Free Resources to learn more on your own.
- Allentown office: (610) 694-9435 — 1245 S Cedar Crest Blvd, Suite 200, Allentown, PA 18103
- Kingston office: (570) 851-7676 — 480 Pierce St, Kingston, PA 18704
There’s no cost to meet with us. Carriers pay our commission, so you pay the same either way.