K4M

BCBS Prefix K4M

Empire Blue Cross Blue Shield

New York • Medicare Advantage, HMO, PPO

Billing essentials

Provider phone
(800) 397-1630
Electronic payer ID
00803
Claims mailing address
P.O. Box 1407, Church Street Station, New York, NY 10008
Timely filing limit
90 daysCompare all plans
Prior authorization phone
(800) 397-1630

Coverage under prefix K4M

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.

HMO

Under this HMO prefix, the member's coverage is limited to the plan's provider network. Care is coordinated through a primary care physician. Specialist visits require a referral from the PCP. When billing, confirm that the referring provider and the referral authorization number are included on the claim.

PPO

This is a Preferred Provider Organization (PPO) prefix. PPO plans are the most common BCBS plan type. Members have the freedom to self-refer to specialists. Claims for in-network services are typically processed faster and reimbursed at higher rates than out-of-network claims.

About Empire Blue Cross Blue Shield

Part of the Blue Cross Blue Shield Association, serving New York members with commercial, Medicare and Medicaid plans.