Here, at a glance, are highlights of Supreme Court actions on Friday:DISABILITY BENEFITS

-The court ruled, 6-3, that state and federal officials may not be sued for monetary damages by people whose Social Security disability benefits were cut off unlawfully. The court said the fact Congress has provided an assortment of remedies for people whose benefits wrongly are terminated means federal courts may not allow such lawsuits. The case is Schweiker vs. Chilicky, 86-1781.

POWER RATES

-The justices, in a ruling that will cost Mississippi consumers $326.5 million, limited severely states' authority to lower the electric rates public utilities charge as a result of agreements with federal regulators. The court, 6-3, said Mississippi authorities are required to pass through to retail electricity customers a utility's federally determined share of the costs of constructing the Grand Gulf 1 nuclear power plant. The case is Mississippi Power & Light vs. Mississipi, 86-1970.

GOVERNMENT IMMUNITY

-The high court limited the government's broad immunity from lawsuits, reinstating a suit by a couple fired on by a drunk, off-duty Navy medic in Maryland. The 6-3 ruling expands the government's liability for negligence in personal injury claims. Justice John Paul Stevens, writing for the court, said negligence by government employees that allows a foreseeable assault to occur by someone else can be a basis for a lawsuit against the government. The case is Sheridan vs. U.S., 87-626.

MIRANDA RIGHTS

-The court said its famous Miranda ruling is sufficient to protect the rights of criminal defendants questioned by police after they are indicted or otherwise formally charged. The justices, voting 5-4 to uphold an Illinois man's murder conviction, said the warnings police have given suspects since the court's landmark 1966 decision adequately protect an already indicted suspect's right to legal help. The case is Patterson vs. Illinois, 86-7059.

PRISON APPEALS

-The court relaxed the deadlines prison inmates face when seeking to appeal their cases in federal appellate courts. The justices said inmates satisfy one preliminary, 30-day deadline if they deliver the documents to prison authorities in time.