Sen. Edward M. (Ted) Kennedy's 24-year-old nephew Christopher Lawford has been arrested in Aspen, Colo., on charges of obtaining a narcotic prescription drug by fraud.

Lawford gave his address to police as Brookline, Mass. A spokesman for Kennedy's office said last night that Lawford has recently been working on the senator's presidential campaign, and making speeches for his uncle in New Hamphire.

Young Lawford is the second of the younger generation of Kennedy cousins to be involved recently in drug-related problems. David Kennedy, 24-year-old son of Ethel Kennedy, was robbed last September in a Harlem hotel known for its drug activity and was subsequently hospitalized for treatment of a hear infection that somethings is associated with narcotics addiction.

Young lawford, son of actor Peter Lawford and Pat Kennedy Lawford, was arrested on Dec. 26 in Aspen, where some 22 members of the Kennedy family are currently on a skiiing vacation.

Lawford was taken into custody by Aspen city police at a drugstore.

According to a law enforcement source, a man identifying himself as a "Dr Smith" allegedly telephoned a prescription for Darvon using a DEA control number that turned out to be false. A suspicious pharmacist called police.

Lawford was arrested when he came to pick up the prescripition, according to Sheriff Don Davis. An unidentified friend brought $1,000 in cash to the county jail an hour and a half after Lawford was booked, and he was released on bond.

He was arraigned at 8:30 a.m. the following day. The charge, according to Davis, is a fifth-degree feony in Colorado, punishable by jail terms up to five years and/or fines up to $15,000.

Lawford's attorney has asked the court for two continuances. Lawford was supposed to appear yesterday and then Jan. 31. The date for his appearance for disposition of the case is now Feb. 7.

Darvon is a pain-killer that was reclassified by the Justice Department in 1976 as a potentially addictive drug, widely abused and sold on the streets. i

Rep. William S. Morhead, the Pennsylvania Democrat who is in line to become the next chairman of the Joint Economic Committee, is thinking about resigning from Congress and getting out of public life altogether.

He has been quietly testing the job market here and in Pittsburgh. Some of his friends have been told that he simply feels that it is time, at 56, after 20 years in Congress, to get out and and launch a new and more lucrative carreer.

But others who know him are aware that he has recently been plagued with personal pressures of the kind that have pushed other politicians in mid-life into getting out of the lime-light.

He was once radio's "Man of a Thousand Voices." She was the singer-turned-weather girl at WRC in Washington whose voice and other attributes caught the ear and eye of televison's Chet Huntley in 1959.

Now both widowed, actor William Conrad and Tippy Stringer Huntley have told friends they plan to marry soon.

Conrad, who was Marshall Matt Dillon's voice on the radio version of "Gunsmoke" for 11 years before he became a TV star in the "cannon" detective series, is 59.

Huntley, who ran unsuccessfully for the House in Montana in 1978, is 48.

A spokesman for the New York Hospital-Medical Center said last week that "it is nobody's business" whether or not the shah of Iran left there without paying his bill.

"I'm sure his credit's good," said Ray Rebbann, adding: "This is a matter between the shah and the hospital."

The medical center, heavily endowed by the Rockefeller family, includeds Laurence Rockefeller as a life member of its hopitial board.

Another of the Rockefeller brothers, David, "co-signed" the shah's application for admittance to he hospital, according to a reliable source. This procedure is necessary, the source said, whenever a patient does not have Blue Cross or other health insurance.

There aren't many tourists, but investigative reporters are still giving the locals a lot unseasonal business around Edgartown and Chappaquiddick. The New York Post has had a three-man team on site and apparently intends to keep them there until they come up with a new angle.

Meanwhile, Ladislas Farago of Paris Match, author of "Game of Foxes," is buying beer around the local pubs for anyone who may know something about a mysterious "countess" he thinks was on the scene the night Sen. Edward M. Kennedy drove off Dyke Bridge.