M3K

BCBS Prefix M3K

Anthem Blue Cross and Blue Shield of Wisconsin

Wisconsin • Medicare Advantage, HMO, Traditional Indemnity

Billing essentials

Provider phone
(855) 558-1443
Electronic payer ID
00246
Claims mailing address
P.O. Box 105557, Atlanta, GA 30348-5557
Timely filing limit
90 daysCompare all plans
Prior authorization phone
(855) 558-1443

Coverage under prefix M3K

Medicare Advantage

This prefix includes Medicare Advantage coverage. MA plans follow CMS guidelines for timely filing (365 days from date of service), which may differ from the commercial plan's deadline. The payer ID for Medicare Advantage claims may differ from the standard commercial payer ID. Verify before submitting.

HMO

HMO (Health Maintenance Organization) plans require members to choose a primary care physician (PCP) and obtain referrals before seeing specialists. Out-of-network services are generally not covered except in emergencies. Claims must be submitted to the payer listed above and should include referral authorization when applicable.

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 Anthem Blue Cross and Blue Shield of Wisconsin

Independent licensee providing commercial, Medicare and Medicaid plans to Wisconsin members.