MGX

BCBS Prefix MGX

Blue Cross and Blue Shield of Massachusetts

Massachusetts • POS, HMO, Traditional Indemnity

Billing essentials

Provider phone
(800) 443-6657
Electronic payer ID
00200
Claims mailing address
P.O. Box 986030, Boston MA 02298
Timely filing limit
180 daysCompare all plans
Prior authorization phone
(800) 443-6657

Coverage under prefix MGX

POS

This is a Point of Service (POS) prefix. POS plans offer flexibility similar to a PPO but incentivize in-network care through lower cost-sharing. Members designate a primary care physician who can issue referrals for the highest level of benefits. Out-of-network claims are covered but at significantly reduced rates.

HMO

HMO coverage means this member must use providers within the plan's network. A primary care physician serves as the care coordinator and must authorize specialist referrals. Emergency services are the primary exception to the network requirement. Always verify referral status before providing non-emergency specialty care.

Traditional Indemnity

This prefix includes traditional indemnity coverage. Indemnity plans are the oldest form of health insurance and offer maximum provider choice with no network restrictions. Members pay a percentage of charges after meeting their deductible. Reimbursement is based on reasonable and customary rates for the service area.

About Blue Cross and Blue Shield of Massachusetts

Independent licensee serving Massachusetts members with commercial, Medicare and Medicaid plans.