Health and Human Services Inspector General Richard P. Kusserow said $2.1 billion in savings not previously reported will be realized in the first half of fiscal 1990 from activities recommended or carried out by his office.

They include cutting Medicare reimbursements to hospitals for capital investment costs and collecting from private insurance companies that have liability to pay part

of the bills for Medicare beneficiaries but have not done

so.

Although most of the savings come from federal policy changes, the report also reveals large numbers of cheats trying to bilk Medicare, Social Security and Medicaid:

A billing service filed false Medicare claims for three New York hospitals and has to pay $2.2 million in restitution and penalties.

$700,000 was collected from doctors who got kickbacks from three Pennsylvania diagnostic laboratories.

Seat-lift companies had to repay $1 million for billing Medicare for chairs that were not medically necessary to the patients.

An unpaid volunteer was ordered to pay $384,000 after conviction for embezzling Medicare and Medicaid checks from a South Carolina health agency.

A foreign national was fined, imprisoned and ordered deported after offering a Social Security employee money for Social Security cards. A former Social Security employee was sentenced for using her position to create Social Security documents designed to shield illegal aliens from discovery.