WNU

BCBS Prefix WNU

Blue Cross and Blue Shield of Massachusetts

Massachusetts • POS, Medicare Advantage, High-Deductible Health Plan (HDHP)

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 WNU

POS

Under this POS prefix, the member can access care both in-network and out-of-network, with cost-sharing that varies based on how the care is accessed. In-network care coordinated through the member's PCP has the lowest out-of-pocket cost. Include referral documentation when billing at the in-network benefit level.

Medicare Advantage

Medicare Advantage coverage under this prefix means the plan administers Medicare Part A and Part B benefits on behalf of CMS. These claims may have different processing rules than commercial claims, including different prior authorization requirements and appeal timelines. CMS timely filing rules (365 days) typically apply.

HDHP

HDHP coverage under this prefix means the member carries a higher annual deductible in exchange for lower monthly premiums. Claims are processed normally but the member's cost-sharing will be higher than standard plans until the deductible is met. Preventive services are typically the exception and are covered at no cost to the member.

About Blue Cross and Blue Shield of Massachusetts

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