Health insurance
Notify insurer to terminate or convert coverage; COBRA or marketplace special enrollment may apply for survivors
Some steps differ by region inside the country.
Where
The insurer or plan administrator, the employer for group coverage, and Medicare or Medicaid where applicable.
How
Report the death to Medicare, or to the private insurer, and request a final statement.
Ask about COBRA continuation for a surviving spouse and dependent children, and note the election deadline.
Review outstanding claims and bills, since providers often bill months after treatment.
If they received Medicaid long term care, expect a possible estate recovery claim against the estate.
What to bring
A certified copy of the death certificate
The member or Medicare number
Proof of your relationship or authority
Timing
COBRA elections generally must be made within 60 days, so do not let this drift.
This is practical information, not legal, medical, or financial advice.