CVS Health's health-insurance company Aetna said that more 69% of its Medicare Advantage members are in 2027 plans rated four stars or higher by the government.

The Centers for Medicare & Medicaid Services evaluates insurance plans based on a five-star rating system every year.

Aetna received five stars for its care for older adults medication review and 4.03 stars for its care for older adults functional status assessment, CVS Health said.

On plan all-cause readmissions, which tracks the percentage of patient hospital stays followed by an unplanned readmission, received 4.77 stars, the company said.

Aetna has above four-star ratings for its rate of complaints about the drug plan, customer service and rating of healthcare quality, CVS Health said.

Shares of the company slipped 2.7%, to $85.47, after hours Thursday after closing about flat, at $87.80.