The shape of the problem
Medicare is hospital insurance, physician insurance, and short-skilled-care insurance. It is built for acute medical events: a heart attack, a stroke, a hip replacement, a cancer diagnosis. It is not built for the slow, daily-life support an older adult needs over years.
Every California family planning for senior care eventually meets this boundary. The bills that are largest, longest, and hardest to plan for are mostly the ones Medicare does not pay. Knowing the exclusion list is half the planning work.
The big exclusion: long-term custodial care
This is the one that surprises families most. Medicare does not pay for help with bathing, dressing, toileting, meals, supervision, or any of the day-to-day support that defines “needing care.” It does not pay assisted living room and board. It does not pay for in-home caregivers when the only need is custodial. It stops paying the skilled nursing facility at day 100 even if the patient is still there. This is the gap most families need to fill.
Alternatives that do pay for custodial care:
- Medi-Cal with IHSS for in-home personal care, the Assisted Living Waiver for select counties, and long-term care coverage in nursing facilities for eligible members.
- Long-term care insurance for policyholders who meet trigger conditions.
- VA Aid & Attendance for eligible veterans and surviving spouses.
- Private pay from savings, income, home equity, or family contribution.
Dental, vision, hearing
Original Medicare excludes routine dental care, routine eye exams for glasses, eyeglasses themselves (with the one cataract-surgery exception), and hearing aids. For California seniors:
- Dental: Medi-Cal Denti-Cal covers a broad set of services for adults. Some Medicare Advantage plans include limited dental.
- Vision: Medi-Cal covers an eye exam and glasses for adults. Out-of-pocket purchase remains common.
- Hearing aids: Medi-Cal covers them after the 2022 restoration. Some Medicare Advantage plans offer a hearing-aid allowance. OTC hearing aids have been legal since October 2022 for mild-to-moderate loss.
Routine foot care
Medicare does not cover routine toenail trimming, callus removal, or corn care for healthy feet. It does cover medically necessary foot care: diabetic foot exams (one every six months for diabetics with peripheral neuropathy), treatment of ulcers and wounds, treatment of bunions or hammertoes, and surgical foot care. The boundary turns on medical necessity, not on the procedure itself.
Cosmetic surgery
Cosmetic surgery is excluded. Reconstructive surgery after an accident, burn, or medically necessary procedure (mastectomy reconstruction, cleft palate repair, post-cancer reconstruction) is covered. The boundary is between “to improve appearance” and “to restore function or appearance after a covered medical event.”
Acupuncture and chiropractic
Since 2020 Medicare covers up to 12 acupuncture sessions in 90 days, with up to 8 additional sessions if the patient improves, for chronic low back pain only. Acupuncture for any other condition is excluded. Chiropractic coverage is narrow: manual manipulation of the spine for subluxation is covered, other chiropractic services are not.
Care outside the United States
Original Medicare almost never pays for care delivered outside the US. The narrow exceptions: emergencies in Canada while traveling between Alaska and the lower 48, foreign hospital closer than any US hospital in an emergency, and certain services on ships in US territorial waters. Some Medigap policies include a limited foreign emergency benefit. Travelers should consider travel health insurance separately.
Prescription drugs
Original Medicare Parts A and B do not cover most prescription drugs taken at home. That is the job of Part D, a separate optional benefit purchased through a private prescription drug plan or included in a Medicare Advantage plan. Drugs administered during a covered inpatient hospital stay or during a covered outpatient procedure are covered under Parts A or B.
Mental health hospitalization, the 190-day rule
Medicare covers inpatient psychiatric hospital care, but with a 190-day lifetime limit when the care is delivered in a freestanding psychiatric hospital. Psychiatric care delivered in the psychiatric unit of a general hospital does not count toward the 190-day limit. This distinction matters for patients with long-term serious mental illness.
Private rooms and personal items
A private hospital room is not covered unless it is medically necessary (infectious isolation, no semi-private available). Personal items during a hospital stay (telephone, television, personal toiletries, flowers) are billed to the patient.
What this means in practice
Medicare is one piece of a senior care plan, not the plan itself. Almost every California family eventually layers a second source: Medi-Cal, LTC insurance, VA benefits, family contribution, or some combination. Knowing what Medicare does not cover is the first step. Knowing which alternative fills which gap is the second. The Care Checker can help map a specific situation.
Related coverage and next steps
- What does Medicare Part A cover?
- Does Medicare cover assisted living?
- Does Medicare cover home health care?
- Does Medicare cover memory care?
- Does Medi-Cal cover dental?
- Does Medi-Cal cover hearing aids?
- Medicare vs. Medi-Cal for senior care in California
This page explains coverage and eligibility, not medical advice. Talk to a licensed clinician about care decisions, and to a benefits counselor about your specific plan. California Care Compass does not place referrals on Coverage pages.