Does Part B cover lab work, preventive services, and mental health?

Coverage
Last updated: 
April 10, 2026
Smiling elderly couple on medicare coverage sitting outdoors in a grassy hilly area, dressed warmly with scarves and jackets.
Smiling elderly man with pre existing conditions is grateful for medicare insurance and woman enjoying tea together indoors with plants in the background.
Older couple smiling wondering about their drug formulary and dancing outdoors among green trees, enjoying a healthy aging lifestyle.

The short answer

Yes, Part B covers lab work, a wide range of preventive services, and outpatient mental health care, though cost-sharing rules vary depending on the service.

The full explanation

Part B covers quite a bit beyond just doctor visits. Here's a quick look at each area.Lab work: Medicare covers medically necessary blood tests, urinalysis, and other diagnostic lab services. When ordered by your doctor as part of your care, these are generally covered at 100 percent with no coinsurance, though specifics can vary.Preventive services: This is a meaningful benefit. Part B covers things like the Welcome to Medicare visit, annual wellness visits, mammograms, colonoscopies, bone density scans, diabetes screenings, certain vaccines including flu and pneumonia shots, and more. Many preventive services are covered at no cost to you when provided by a participating provider. If a colonoscopy starts as preventive but a polyp is removed during the procedure, you may end up with some cost-sharing, which surprises people.Mental health: Part B covers outpatient mental health care, including visits with psychiatrists, psychologists, clinical social workers, and other licensed mental health professionals who accept Medicare. You typically pay 20 percent after the Part B deductible. Inpatient psychiatric care falls under Part A with its own rules.Always verify that your specific provider accepts Medicare assignment, meaning they agree to Medicare's approved rates, to avoid surprise bills.

Related Medicare Resources

Smiling elderly couple on social security benefits misunderstand medicare advantage are outdoors with man presenting a bouquet of yellow flowers to the woman.Smiling elderly couple disappointed at their doctor for not accepting medicare sitting on a bench outdoors holding a colorful bouquet of flowers.A group of six older adults enjoy discussion with primary care physician covered by medicare sitting together indoors, smiling and enjoying conversation with drinks.
Two elderly men in a nursing home paid for by medicare sitting at a wooden table outdoors, one showing the other something on a tablet, with drinks on the table.

In 

 specifically

Both Intermountain Health and University of Utah Health participate in Medicare, so most Utah patients have access to lab and preventive services through those large systems. Mental health provider availability can be more limited in rural areas of the state.

What this means for you

For you, this means preventive screenings and mental health care are part of your Medicare coverage, not extras you have to seek out separately, though confirming your provider accepts Medicare assignment before your appointment is always a smart move.

Related Questions

Still have questions about Medicare?

Book a review with a licensed Medicare advisor.

Senior couple sitting together outdoors near white flowers and greenery, smiling and looking to the right.