New York City Hospitals Move Toward Arbitration
League of Voluntary Hosps and Homes agrees in principle to submit 10-day-old hosp strike to binding arbitration after NYS threatens to curtail Medicaid and other funding to hosps if strike is not ended; union officials are angered by negotiator for league who gave reporters copies of guidelines before they had been discussed; ultimatum to hosps is delivered by Emergency Financial Control Bd exec dir Stephen Berger, Gov Carey's sec David Burke and Dr Kevin Cahill, Carey's adviser on health matters (M)