Dr. Michael Halberstam and writer Stephan Lesher, currently a vice president at Rafshoon Communications in Washington, hit it big with A Coronary Event . That 1976 book, an account of Lesher's heart attack as told by both patient and doctor in alternating chapters, will be the basis for an ABC television series called "The Lazarus Syndrome" beginning in September. Blinn/Thorpe Productions will produce a 13-part, fictionalized series for ABC that is scheduled to follow that network's winning Tuesday night line-up of "Happy Days," "Three's Company" and "Taxi." Playing Halberstam's role is black actor Louis Gossett Jr. Halberstam is white.

"It'll give the Washington press corps the glamor Fishbait Miller gave the House of Representatives," vows Frances Spatz Leighton, queen of the capital's kiss-and-tell book industry. Along with a co-author she declines to identify, Leighton promises to tell "tales out of school" about Washington reporters, editors, public relations people, newsletter editors and others. The as-yet-untitled book - complete with candid photos taken of journalists hard at work or drink - will be published by Prentice-Hall in September . . . In a city where there's a newsletter for nearly every interest group, add another: a $500-a-year newsletter specializing in the wage and price council. Called simply "Inside Wage and Price," it's one of a half-dozen newsletters published by Resource News Service . . . Wallace Westfeldt, who came to Washington to begin (with Sander Vanocur) ABC-TV's investigative unit, returns to Manhattan to produce Tom Snyder's new show on NBC . . . Dr. Gabe Mirkin and Marshall Hoffman have made a cottage industry out of their bestseller called The Sportsmedicine Book . In addition to a syndicated newspaper column on medicine and sports, Mirkin does commentary for CBS radio from a studio the network built him in his office. At night he hosts a two-hour talk show on WCAU radio in Philadelpia.

If there was ever any doubt, there should be no more: the disco fad has been around long enough to qualify as a way of life. Which means competition for customers is fierce.

Some spots, like Tiffane's on L Street, need only open the doors to draw a line. Others feature never-ending promotions, such as Images, where management is offering $10,000 in cash and prizes (mostly the latter) for the best pair of "disco legs" in a long-running competition.

Construction and financing problems plagued the Polo Club, delaying its opening in the basement of the Sheraton-Carlton and undoubtedly bringing smiles to the managers of Elan. But leasing company mogul Lee Nathanson - whose last appearance on the avant-garde scene was as a member of The Highwaymen, the group that sang "Michael, Row Your Boat Ashore" - stepped in with bucks to ensure a late June opening. A former radio DJ who will work the door says Washingtonians will learn of their by-invitation-only acceptance at the club when they wake up one morning soon to find their names in a newspaper ad.

The peripatetic Michael O'Harro of Tramps suggested to Joseph Schlitz Brewing Company - which hired him as a $500-a-day consultant "to make beer chic and macho in a disco vein" - that they market beer the way champagne is sold, with sleek models sipping brew in classy surroundings. A new bottle design ("very sensuous and good-looking," says O'Harro) is a first contemplated step, along with a massive public relations campaign including T-shirts reading "Schlitz C'est Chic." CAPTION: Picture, no caption, By Susan Davis