| X3L | Blue Cross Blue Shield of Michigan | MI | Medicare Advantage PPO | | 2026 Blue Cross products at a glance (For Blue Cross commercial, Medicare Plus Blue and Blue Cross Complete) - Blue Cross Blue Shield of Michigan |
|---|
| X4N | Premera Blue Cross | WA | | | Premera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469) |
|---|
| X4Q | Premera Blue Cross | WA | | | Premera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469) |
|---|
| X4W | Premera Blue Cross | WA | | | Premera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469) |
|---|
| X4X | Anthem Blue Cross and Blue Shield (Colorado) | CO | | | New Pathway Essentials network in Colorado to support new product offerings available in January 1, 2021 - Anthem Provider News (Colorado)Source dated before 2022 |
|---|
| X5P | Anthem Blue Cross and Blue Shield (Connecticut) | CT | HMO-POS | | Important State of Connecticut Employer Group, Connecticut Partnership Plan changes, Anthem Blue Cross and Blue Shield Provider News (Connecticut) |
|---|
| X6F | Premera Blue Cross | WA | | | Premera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469) |
|---|
| X6G | Anthem Blue Cross and Blue Shield (Connecticut) | CT | HMO-POS | | Important State of Connecticut Employer Group, Connecticut Partnership Plan changes, Anthem Blue Cross and Blue Shield Provider News (Connecticut) |
|---|
| X7W | Premera Blue Cross | WA | | | Premera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469) |
|---|
| X7Y | Premera Blue Cross | WA | | | Premera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469) |
|---|
| X9T | CBA Blue | VT | | | Prefix Listing (Updated 02.07.25), Blue Cross and Blue Shield of Vermont |
|---|
| XAD | Blue Cross and Blue Shield of Alabama | AL | Dental | | Dental Network Information and Resources - provider.bcbsal.org (Blue Cross and Blue Shield of Alabama) |
|---|
| XBU | Independence Blue Cross | PA | POS | | Payer ID provider number reference, Professional (Independence Blue Cross), Revised April 2025 |
|---|
| XCA | Independence Blue Cross | PA | HMO | | Payer ID provider number reference, Professional (Independence Blue Cross), Revised April 2025 |
|---|
| XCE | Independence Blue Cross | PA | Medicare Supplement | | Payer ID provider number reference, Professional (Independence Blue Cross), Revised April 2025 |
|---|
| XDP | Anthem Blue Cross | CA | | | UC SHIP ID Cards - UC Davis Student Health and Counseling Services |
|---|
| XGL | Anthem Blue Cross and Blue Shield (Connecticut) | CT | HMO | | Important State of Connecticut Employer Group, Connecticut Partnership Plan changes, Anthem Blue Cross and Blue Shield Provider News (Connecticut) |
|---|
| XGR | Anthem Blue Cross and Blue Shield (Connecticut) | CT | HMO-POS | | Important State of Connecticut Employer Group, Connecticut Partnership Plan changes, Anthem Blue Cross and Blue Shield Provider News (Connecticut) |
|---|
| XGS | Anthem Blue Cross and Blue Shield (Connecticut) | CT | PPO | | Important State of Connecticut Employer Group, Connecticut Partnership Plan changes, Anthem Blue Cross and Blue Shield Provider News (Connecticut) |
|---|
| XGT | Anthem Blue Cross and Blue Shield (Connecticut) | CT | HMO | | Important State of Connecticut Employer Group, Connecticut Partnership Plan changes, Anthem Blue Cross and Blue Shield Provider News (Connecticut) |
|---|
| XIB | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XIC | CareFirst BlueCross BlueShield | Multi-state | | | Member Identification Card Quick Reference Guide (CareFirst BlueCross BlueShield, CUT0491-1E) |
|---|
| XIE | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XIF | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XIG | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XIH | CareFirst BlueCross BlueShield | Multi-state | | | Member Identification Card Quick Reference Guide (CareFirst BlueCross BlueShield, CUT0491-1E) |
|---|
| XII | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XIJ | CareFirst BlueCross BlueShield | Multi-state | Indemnity | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XIK | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XIL | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XIQ | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XIR | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XIU | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XIY | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XKH | Premera Blue Cross | WA | | | Premera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469) |
|---|
| XNY | Independence Blue Cross | PA | Medicare Advantage PPO | | Payer ID provider number reference, Professional (Independence Blue Cross), Revised April 2025 |
|---|
| XOD | Blue Cross and Blue Shield of Illinois | IL | Medicare Advantage PPO | | Networks and Benefit Plans: Government Programs (Blue Cross Community Health Plans, Medicare Advantage) - Blue Cross and Blue Shield of Illinois |
|---|
| XOF | Blue Cross and Blue Shield of Illinois | IL | PPO | | Networks and Benefit Plans: Blue Choice PPO and PPO Networks - Blue Cross and Blue Shield of Illinois |
|---|
| XOH | Blue Cross and Blue Shield of Illinois | IL | HMO | | Networks and Benefit Plans: HMO Networks (HMO Illinois, Blue Advantage HMO, Blue Precision HMO, BlueCare Direct) - Blue Cross and Blue Shield of Illinois |
|---|
| XOJ | Blue Cross and Blue Shield of Illinois | IL | Medicare Advantage HMO | | Networks and Benefit Plans: Government Programs (Blue Cross Community Health Plans, Medicare Advantage) - Blue Cross and Blue Shield of Illinois |
|---|
| XOL | Blue Cross and Blue Shield of Illinois | IL | Exchange/Marketplace | | Networks and Benefit Plans: HMO Networks (HMO Illinois, Blue Advantage HMO, Blue Precision HMO, BlueCare Direct) - Blue Cross and Blue Shield of Illinois |
|---|
| XOO | Blue Cross and Blue Shield of Illinois | IL | HMO | | Networks and Benefit Plans: HMO Networks (HMO Illinois, Blue Advantage HMO, Blue Precision HMO, BlueCare Direct) - Blue Cross and Blue Shield of Illinois |
|---|
| XOU | Blue Cross and Blue Shield of Illinois | IL | PPO | | Networks and Benefit Plans: Blue Choice PPO and PPO Networks - Blue Cross and Blue Shield of Illinois |
|---|
| XOX | Blue Cross and Blue Shield of Illinois | IL | | | Networks and Benefit Plans: Blue Choice PPO and PPO Networks - Blue Cross and Blue Shield of Illinois |
|---|
| XQW | Wellmark Blue Cross and Blue Shield | IA | | | Medical Plan - University Human Resources, Iowa State University |
|---|
| XRF | Independence Blue Cross | PA | HMO | | Payer ID provider number reference, Professional (Independence Blue Cross), Revised April 2025 |
|---|
| XSB | Blue Cross and Blue Shield of Kansas | KS | | | 2024 Insurance Biller's Seminar (professional provider) - Blue Cross and Blue Shield of Kansas |
|---|
| XSN | Blue Cross and Blue Shield of Kansas | KS | Exchange/Marketplace | | BlueCare EPO (Exclusive Provider Organization) - Professional provider information, Blue Cross and Blue Shield of Kansas |
|---|
| XSZ | Blue Cross and Blue Shield of Kansas | KS | EPO | | BlueCare EPO (Exclusive Provider Organization) - Professional provider information, Blue Cross and Blue Shield of Kansas |
|---|
| XTA | Anthem Blue Cross and Blue Shield (Kentucky) | KY | Exchange/Marketplace Small Group PPO | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XTB | Anthem Blue Cross and Blue Shield (Kentucky) | KY | Exchange/Marketplace Small Group PPO | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XTC | Anthem Blue Cross and Blue Shield (Kentucky) | KY | Exchange/Marketplace PPO | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XTD | Anthem Blue Cross and Blue Shield (Kentucky) | KY | Exchange/Marketplace PPO | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XTE | Anthem Blue Cross and Blue Shield (Kentucky) | KY | Exchange/Marketplace Small Group PPO | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XTF | Anthem Blue Cross and Blue Shield (Kentucky) | KY | | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XTI | Anthem Blue Cross and Blue Shield (Kentucky) | KY | Exchange/Marketplace Small Group HMO | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XTJ | Anthem Blue Cross and Blue Shield (Kentucky) | KY | Exchange/Marketplace HMO | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XTK | Anthem Blue Cross and Blue Shield (Kentucky) | KY | Exchange/Marketplace HMO | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XTN | Anthem Blue Cross and Blue Shield (Kentucky) | KY | Exchange/Marketplace Small Group HMO | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XTV | Anthem Blue Cross and Blue Shield (Kentucky) | KY | HMO | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XUD | Blue Cross and Blue Shield of Louisiana | LA | HMO/POS | | Louisiana Blue Professional Workshop Session B (Blue Cross and Blue Shield of Louisiana) |
|---|
| XUF | Blue Cross and Blue Shield of Louisiana | LA | HMO/POS | | Louisiana Blue Professional Workshop Session B (Blue Cross and Blue Shield of Louisiana) |
|---|
| XUG | Blue Cross and Blue Shield of Louisiana | LA | HMO/POS | | Louisiana Blue Professional Workshop Session B (Blue Cross and Blue Shield of Louisiana) |
|---|
| XUJ | Blue Cross and Blue Shield of Louisiana | LA | HMO/POS | | Louisiana Blue Professional Workshop Session B (Blue Cross and Blue Shield of Louisiana) |
|---|
| XUT | Blue Cross and Blue Shield of Louisiana | LA | HMO/POS | | Louisiana Blue Professional Workshop Session B (Blue Cross and Blue Shield of Louisiana) |
|---|
| XUU | Blue Cross and Blue Shield of Louisiana | LA | HMO/POS | | Louisiana Blue Professional Workshop Session B (Blue Cross and Blue Shield of Louisiana) |
|---|
| XUV | Blue Cross and Blue Shield of Louisiana | LA | HMO/POS | | Louisiana Blue Professional Workshop Session B (Blue Cross and Blue Shield of Louisiana) |
|---|
| XVA | Anthem Blue Cross and Blue Shield (Maine) | ME | | | Anthem Blue Cross and Blue Shield (Anthem Health Plans of Maine, Inc.) provider telephone and fax directory (ME_CONTACT_00002) |
|---|
| XVB | Anthem Blue Cross and Blue Shield (Maine) | ME | | | Anthem Blue Cross and Blue Shield (Anthem Health Plans of Maine, Inc.) provider telephone and fax directory (ME_CONTACT_00002) |
|---|
| XVF | Anthem Blue Cross and Blue Shield (Maine) | ME | | | Anthem Blue Cross and Blue Shield (Anthem Health Plans of Maine, Inc.) provider telephone and fax directory (ME_CONTACT_00002) |
|---|
| XVG | Anthem Blue Cross and Blue Shield (Maine) | ME | | | Anthem Blue Cross and Blue Shield (Anthem Health Plans of Maine, Inc.) provider telephone and fax directory (ME_CONTACT_00002) |
|---|
| XVH | Anthem Blue Cross and Blue Shield (Maine) | ME | | | Anthem Blue Cross and Blue Shield (Anthem Health Plans of Maine, Inc.) provider telephone and fax directory (ME_CONTACT_00002) |
|---|
| XVI | Anthem Blue Cross and Blue Shield (Maine) | ME | | | Anthem Blue Cross and Blue Shield (Anthem Health Plans of Maine, Inc.) provider telephone and fax directory (ME_CONTACT_00002) |
|---|
| XVK | Anthem Blue Cross and Blue Shield (Kentucky) | KY | Exchange/Marketplace PPO | | Professional provider workshop, Fall 2019 - Administrative Services directory (Anthem Blue Cross and Blue Shield, Kentucky; AKYPEC-2253-19)Source dated before 2022 |
|---|
| XVP | Anthem Blue Cross and Blue Shield (Maine) | ME | | | Anthem Blue Cross and Blue Shield (Anthem Health Plans of Maine, Inc.) provider telephone and fax directory (ME_CONTACT_00002) |
|---|
| XWC | CareFirst BlueCross BlueShield | Multi-state | Medicare Supplement | | Member Identification Card Quick Reference Guide (CareFirst BlueCross BlueShield, CUT0491-1E) |
|---|
| XWT | Premera Blue Cross | WA | | | Premera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469) |
|---|
| XWV | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XWY | CareFirst BlueCross BlueShield | Multi-state | Indemnity | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XWZ | CareFirst BlueCross BlueShield | Multi-state | | | Provider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E) |
|---|
| XXL | Blue Cross and Blue Shield of Illinois | IL | Medicaid | | Networks and Benefit Plans: Government Programs (Blue Cross Community Health Plans, Medicare Advantage) - Blue Cross and Blue Shield of Illinois |
|---|
| XYB | Blue Care Network of Michigan | MI | HMO | | 2026 product information for providers - Blue Care Network: Understanding member ID cards (Blue Cross Blue Shield of Michigan / Blue Care Network) |
|---|
| XYD | Blue Care Network of Michigan | MI | | | 2026 product information for providers - Blue Care Network: Understanding member ID cards (Blue Cross Blue Shield of Michigan / Blue Care Network) |
|---|
| XYE | Blue Cross Blue Shield of Michigan | MI | Exchange/Marketplace | | 2026 Blue Cross products at a glance (For Blue Cross commercial, Medicare Plus Blue and Blue Cross Complete) - Blue Cross Blue Shield of Michigan |
|---|
| XYF | Blue Care Network of Michigan | MI | | | 2026 product information for providers - Blue Care Network: Understanding member ID cards (Blue Cross Blue Shield of Michigan / Blue Care Network) |
|---|
| XYG | Blue Cross Blue Shield of Michigan | MI | | | 2026 Blue Cross products at a glance (For Blue Cross commercial, Medicare Plus Blue and Blue Cross Complete) - Blue Cross Blue Shield of Michigan |
|---|
| XYH | Blue Care Network of Michigan | MI | HMO | | 2026 product information for providers - Blue Care Network: Understanding member ID cards (Blue Cross Blue Shield of Michigan / Blue Care Network) |
|---|
| XYJ | Blue Care Network of Michigan | MI | Medicare Supplement | | 2026 product information for providers - Blue Care Network: Understanding member ID cards (Blue Cross Blue Shield of Michigan / Blue Care Network) |
|---|
| XYK | Blue Care Network of Michigan | MI | Medicare Advantage HMO | | 2026 product information for providers - Blue Care Network: Understanding member ID cards (Blue Cross Blue Shield of Michigan / Blue Care Network) |
|---|
| XYL | Blue Cross Blue Shield of Michigan | MI | Medicare Advantage PPO | | 2026 Blue Cross products at a glance (For Blue Cross commercial, Medicare Plus Blue and Blue Cross Complete) - Blue Cross Blue Shield of Michigan |
|---|
| XYQ | Blue Cross Blue Shield of Michigan | MI | PPO | | 2026 Blue Cross products at a glance (For Blue Cross commercial, Medicare Plus Blue and Blue Cross Complete) - Blue Cross Blue Shield of Michigan |
|---|
| XYR | Blue Cross Blue Shield of Michigan | MI | Medicare Supplement | | 2026 Blue Cross products at a glance (For Blue Cross commercial, Medicare Plus Blue and Blue Cross Complete) - Blue Cross Blue Shield of Michigan |
|---|
| XYS | Blue Care Network of Michigan | MI | | | 2026 product information for providers - Blue Care Network: Understanding member ID cards (Blue Cross Blue Shield of Michigan / Blue Care Network) |
|---|
| XYU | Blue Cross Blue Shield of Michigan | MI | Medicaid | | 2026 Blue Cross products at a glance (For Blue Cross commercial, Medicare Plus Blue and Blue Cross Complete) - Blue Cross Blue Shield of Michigan |
|---|
| XYW | Blue Care Network of Michigan | MI | Exchange/Marketplace | | 2026 product information for providers - Blue Care Network: Understanding member ID cards (Blue Cross Blue Shield of Michigan / Blue Care Network) |
|---|
| XYX | Blue Cross Blue Shield of Michigan | MI | Medicare Supplement | | 2026 Blue Cross products at a glance (For Blue Cross commercial, Medicare Plus Blue and Blue Cross Complete) - Blue Cross Blue Shield of Michigan |
|---|
| XYY | Blue Cross Blue Shield of Michigan | MI | | | 2026 Blue Cross products at a glance (For Blue Cross commercial, Medicare Plus Blue and Blue Cross Complete) - Blue Cross Blue Shield of Michigan |
|---|
| XZJ | Independence Blue Cross | PA | PPO | | Payer ID provider number reference, Professional (Independence Blue Cross), Revised April 2025 |
|---|
| XZK | Independence Blue Cross | PA | Medicare Advantage PPO | | Payer ID provider number reference, Professional (Independence Blue Cross), Revised April 2025 |
|---|