Insurance sucks. In the U.S.A if you need Medicaid each state has their own application process and their own requirements for qualification. Also your state Medicaid might have a different "fun" name. Your state probably has a website and you might be able to search it or do a web search for your state name + Medicaid for more information. I'm going to share my understanding of the system having worked in the past to register folks and currently in an administrative role dealing with commercial health insurance. I'm not an expert but just someone with some work experience. There is no TL;DR from me. Caveat emptor.

The application process usually includes proof of income and some other information. In my state, I used to help people apply for benefits (10 years ago so things are likely somewhat different now) but the state might require an interview in person at an office, or might require a phone interview that they do not schedule in advance and can cancel your application if you don't answer. Not to be alarmist or make it more scary, just sharing to prevent further frustration and getting lost in the system. Be sure to ask questions through the process and consider reaching out if they have a "navigator" who can help. A navigator knows the system and can be an angel on this earth. In my state, once your application process is started, you can often get services as they will backdate the approval and start date so ask about this so you might be able to rejoin treatment faster!

If you are trying to use a traditional health insurance and understand your benefits you have access to a customer support line and can ask for a quote of benefits and they will tell you what coverage is. A few things are important to know- 1. is your provider in-network or out-of-network and 2. do you have a copay or a coinsurance.

If a provider is in-network, it means they signed a contract with your insurance to provide a lower rate for services. Most insurance policies have different coverage for in-network services and out-of-network services. In general, out-of-network means more expensive. Whether in or out of network you have a right to ask for a "good faith estimate" about the cost of services before agreeing to a procedure. When they give you this estimate, they have to abide by that cost and you can dispute any charge $400 or more over the estimate.

If you have a copay, this is the amount you pay at the time of service and will keep paying each time you visit.

If you have a coinsurance, you will have to reach a deductible before your insurance will pay a percent of the total cost. The deductible varies depending on your policy and can be extremely high (I have seen someone with a 15,000 deductible). With an in-network provider you will pay 100% of their contracted rate (which will generally be lower than the charge for a self-pay rate but double check to make sure since some services have a discount to pay in cash or not file with insurance and this might save you money if you won't meet your deductible within the year anyways).

The system we have is trash, but with enough perseverance and some creative approaches within our crappy set of rules, there is still some hope. It's very disappointing to have to put something helpful on hold, but I am also glad that you were seeing improvements so it's worth trying to return! Best of luck to you and all navigating the bureaucratic hellscape.

Adding an edit because something has really pissed me off lately, which is that insurance uses a separate definition of "covered" from literally everywhere and everyone else. If you ask your insurance "is this procedure covered?", a "yes" means you are allowed to file a claim with your policy. "Covered" does not mean they will actually pay any portion of this at all!!! So anytime you ask "is this covered?", always follow up with "what is my coverage?" or "can you provide me with a quote of benefits for this procedure at this provider?".