MKW

BCBS Prefix MKW

Wellmark Blue Cross and Blue Shield

South Dakota/Iowa • Medicare Advantage, High-Deductible Health Plan (HDHP), EPO

Billing essentials

Provider phone
(800) 552-3993
Electronic payer ID
88848
Claims mailing address
P.O. Box 14509, Des Moines, IA 50306-3509
Timely filing limit
180 daysCompare all plans
Prior authorization phone
(800) 552-3993
Provider website
https://www.wellmark.com

Coverage under prefix MKW

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 (High-Deductible Health Plan) coverage means the member has a higher deductible than traditional plans, often paired with a Health Savings Account (HSA). Most services require the member to pay out-of-pocket until the deductible is met. Preventive care is typically covered before the deductible. Submit claims normally to the payer listed above.

EPO

Under this EPO prefix, the member has no out-of-network coverage for routine care. However, unlike HMO plans, no referral is needed to see a specialist within the network. When billing, confirm the provider's network participation status with the plan before submitting the claim.

About Wellmark Blue Cross and Blue Shield

Health insurance company serving Iowa and South Dakota with commercial and other plans.