If someone must receive help for drug and alcohol addiction in Diamond Bar, CA. and is lucky enough to be covered through health insurance, a great number of drug rehabilitation centers accept payment in the form of health insurance and will work with individuals to determine which treatment programs are approved. The majority of private health insurance entities in Diamond Bar, California cover outpatient and inpatient drug rehabilitation, although the length of time which is included can vary. Private health insurance will more than likely cover the first 4 weeks of drug treatment, but there are people whose insurance coverage is more extensive and can provide for a longer stay in a Diamond Bar, CA. drug treatment center. It is best to their plan from the get go in liaison with the treatment center to establish what services are included by their private health insurance.