The U. of C. Medicine letter, however, says that UnitedHealthcare members undergoing "active treatment" might be able to continue getting care at in-network rates for a time. That may include people who are already in the hospital, many pregnant women, nonsurgical cancer patients, patients with end-stage renal disease, dialysis patients and symptomatic AIDS patients, according to the letter. Patients have to contact UnitedHealthcare to see if they qualify.