BlueCard home-plan routing

MKD

BCBS prefix

MKD routes to Blue Cross and Blue Shield of Massachusetts in MA.

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Bundled codes for maternity are deleted January 1, 2027Get ready for the change >>

Routing destination

Blue Cross and Blue Shield of Massachusetts

The first three characters on the member’s current ID card identify this BlueCard home plan. Use the terminal trading partner below for the published electronic routes.

Enhanced claim statusEDI 276/277, Availity ECS, or portal automation
Available
EligibilityEDI 270/271
Available
Appeals agentAI appeals workflow
Not published

Phone and fax contacts

Numbers vary by plan, service, and department. Check the member’s ID card before calling or sending a fax.

Phone lines8
  • (800) 200-4255Blue Cross Blue Shield of Massachusetts phone treeMember service center for Blue Cross Blue Shield of Massachusetts: provider calls, premium payment by phone, and ID card orders.Answered by: Automated phone menu → Live person
  • (800) 327-6716Blue Cross Blue Shield of Massachusetts Health and Medical ManagementBlue Cross Blue Shield of Massachusetts health and medical management line for provider authorization and referral calls, staff extensions and members.Answered by: Automated phone menu
  • (800) 424-0794Blue Cross Blue Shield of Massachusetts phone treeBlue Cross Blue Shield of Massachusetts member service line. Members press 2 for claims, policy, address, ID card and document requests; open enrollment callers press 3 and are transferred.Answered by: Automated phone menu
  • (800) 443-6657Blue Cross Blue Shield of Massachusetts Provider Service CenterBlue Cross Blue Shield of Massachusetts provider service line with the InfoDial automated system for eligibility, authorization and referral information, claim submission and claim status.Answered by: Automated phone menu
  • (800) 771-4097Blue Cross Blue Shield of Massachusetts provider centralBlue Cross Blue Shield of Massachusetts provider central and EDI line, closed when called; the recording points callers to the claim status system, the provider website, and business hours.Answered by: Recorded message
  • (800) 859-4417Blue Cross Blue Shield of Massachusetts Member Service CenterMember service center for Blue Cross Blue Shield of Massachusetts, with self-service for claim status, policy members, address changes, ID cards and documents, plus open enrollment help.Answered by: Automated phone menu
  • (800) 882-1178Blue Cross Blue Shield of Massachusetts dental provider serviceBlue Cross Blue Shield of Massachusetts dental provider service line: members with dental benefits press 9, and other callers press pound or stay on the line.Answered by: Automated phone menu
  • (800) 882-2060BCBS of Massachusetts provider service centerProvider service center line that plays a closed-office message with business hours and no menu.Answered by: Recorded message
Phone numbers14
Blue Cross Blue Shield of Massachusetts phone numbers
Channel and numberPayer NotesDepartmentSpecialties
phone(203) 250-2601Eligibility / benefitsBenefit context: Contact Following Entity for Eligibility or Benefit Information
  • LC FND OF ANTHEM FLX DNTL NTWK.
Dental Care
phone(800) 335-8289Eligibility / benefitsBenefit context: Contact Following Entity for Eligibility or Benefit Information
  • DELTA DENTAL OF VA
Dental Care
phone(800) 676-2583Eligibility / benefitsBenefit context: Contact Following Entity for Eligibility or Benefit Information
  • BLUE CROSS BLUE SHIELD OF MASSACHUSETTS
  • CUSTOMER SERVICE
Hospital, Hospital - Inpatient
phone(800) 972-8088Eligibility / benefitsBenefit context: Contact Following Entity for Eligibility or Benefit Information
  • CUSTOMER SERVICE
Hospital, Hospital - Inpatient
phone(800) 238-2227Other stated context, Prior authorizationBenefit context: Co-Payment; Benefit context: Co-Insurance
  • ANTHEM BLUE CROSS AND BLUE SHIELD
  • PRECERT
Hospital, Hospital - Inpatient, Urgent Care
phone(800) 888-9255Utilization managementBenefit context: Co-Insurance
  • UTILIZATION MANAGEMENT
Hospital
phone(800) 892-1893Utilization managementBenefit context: Co-Insurance
  • UTILIZATION MANAGEMENT
Hospital
phone(855) 343-4851Utilization managementBenefit context: Co-Insurance
  • UTILIZATION MANAGEMENT
Hospital
phone(866) 470-6244Utilization managementBenefit context: Co-Insurance
  • UTILIZATION MANAGEMENT
Hospital
phone(800) 664-2583Other stated contextBenefit context: Active Coverage
  • HORIZON BCBSNJ
Health Benefit Plan Coverage
phone(877) 342-5258Other stated contextBenefit context: Co-Insurance
  • PREMERA
Hospital - Inpatient
phone(800) 214-4844
  • BLUE CROSS BLUE SHIELD OF MASSACHUSETTS
phone(800) 327-6716
  • BLUE CROSS BLUE SHIELD OF MASSACHUSETTS
phone(800) 727-2227
  • BLUE CROSS BLUE SHIELD OF MASSACHUSETTS

Numbers stated in payer eligibility responses; scope may depend on benefits, products, or departments.

Fax numbers1
Blue Cross Blue Shield of Massachusetts fax numbers
Channel and numberPayer NotesDepartmentSpecialties
fax(888) 282-1321
  • BLUE CROSS BLUE SHIELD OF MASSACHUSETTS

Numbers stated in payer eligibility responses; scope may depend on benefits, products, or departments.

Retired numbers4

These numbers played a not-in-service recording when called. Do not use them; call the replacement or the number on the member’s ID card.

  • (800) 397-7337Not in service when called; re-check pending
  • (800) 922-6621Not in service when called; re-check pending
  • (844) 805-9802Out of service
  • (855) 243-3326Not in service when called; re-check pending

Member ID guidance

Read the prefix from the current card.

Do not infer a prefix from another member or an older card. Federal Employee Program IDs beginning with a single “R” follow a separate route.

Masked formats use L for a letter, N for a number, and ? for an unknown character. No member IDs are published.

Evidence

Source and verification

Prefix, home plan, and state
Substrate BlueCard mapping snapshot. Data last changed ; checked . Check the current prefix with BCBS ↗
Terminal payer and payer ID
Linked to the directory’s terminal payer record, checked . Open the payer routing sources →
Availability signals
Substrate’s reviewed route configuration and claim-status network, checked .

Use the member’s current ID card and confirm the current payer or clearinghouse route before submission. Prefix associations and transaction support can change.

Disclaimer

The information provided on this page is for general informational purposes only and does not constitute billing, coding, or reimbursement advice. Nothing on this page should be relied upon as a substitute for clinician assessment, professional billing guidance, or as a definitive statement of any payor's billing requirements or policies.

Payor agreements, fee schedules, and billing policies vary and are subject to change. Before submitting any claims related to maternity care services, including claims affected by the 2027 CPT code revisions, please consult the applicable payor agreements, coverage policies, and billing guidelines to confirm current requirements for their specific payor contracts.

Substrate makes no representation or warranty regarding the accuracy, completeness, or timeliness of the payor-specific information presented here. Providers are solely responsible for ensuring that all claims are submitted in accordance with applicable payor requirements, and Substrate assumes no liability for claim denials, underpayments, or other adverse outcomes arising from reliance on this information.