Final answer:
Hospitals may expand their outpatient services for competition from managed care organizations and cross-referral opportunities, however, keeping patients is not a reason for expansion.
Step-by-step explanation:
One reason for hospitals to expand their outpatient services is competition from managed care organizations. Managed care organizations often provide outpatient services at a lower cost compared to hospitals, which can lead to a decrease in hospital revenue. Another reason for hospitals to expand their outpatient services is the opportunities for cross-referrals among services. By offering a range of outpatient services, hospitals can refer patients to different specialties within the same system, improving patient care and increasing revenue. However, keeping patients is not a reason for hospitals to expand their outpatient services.