BCBS of New Mexico, Oklahoma and Montana (HCSC) Billing Guide
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Blue Cross and Blue Shield of New Mexico, Oklahoma and Montana are each a division of Health Care Service Corporation (HCSC), a mutual legal reserve company and an independent licensee of the Blue Cross and Blue Shield Association. Each state's own page says so. HCSC also runs Texas and Illinois. A payer ID, PO box or phone number from one HCSC state does not work in another.
Checked 10/1/26.
Jump to: New Mexico · Oklahoma · Montana
New Mexico (BCBSNM)
| Electronic payer ID | 00790. "All electronic claims submitted to BCBSNM must be routed with payer ID 00790" (claim submission) |
|---|---|
| Timely filing | Within 180 days of the date of service (claim submission) |
| Paper claims (group, individual and HMO) | BCBSNM, PO Box 660058, Dallas, TX 75266-0058 (May 2024 notice) |
| Provider Service Unit | (888) 349-3706 |
| Behavioral Health | (888) 898-0070 (BCBSNM Behavioral Health unit; prior authorizations and clinical review) |
| Credentialing | Update CAQH when information changes (Provider Reference Manual) |
| State regulator | New Mexico Office of Superintendent of Insurance |
Oklahoma (BCBSOK)
| Electronic payer ID | 00840 (BCBSOK commercial provider manual) |
|---|---|
| Timely filing | Claims are not payable if not filed within 180 days of the date of discharge or service (manual) |
| Paper claims (commercial professional) | BCBSOK, PO Box 655924, Dallas, TX 75265-5924 (claim submission) |
| Appeals | Standard appeals within 180 days of the original adverse determination letter (manual) |
| Provider Inquiry Unit | 800-496-5774 |
| Behavioral health preauthorization | 800-672-2378 (contact reference guide) |
| Provider Education Consultants | |
| State regulator | Oklahoma Insurance Department |
Montana (BCBSMT)
| Electronic payer ID | Ask your Provider Education Consultant (). BCBSMT's claim and Availity pages direct you there |
|---|---|
| Paper claims (commercial CMS-1500 and UB-04) | BCBSMT, PO Box 660255, Dallas, TX 75266-0255 (September 2024 notice) |
| Behavioral health correspondence | PO Box 660240, Dallas, TX 75266-0240 (same notice) |
| Claim review | Availity reconsideration, or the Claim Review Form by mail (claim review and appeal) |
| General provider customer service | 800-972-8088 |
| Group, BlueCard and individual providers | 800-447-7828, option 2 |
| Behavioral health and prior authorization | 855-313-8909, fax 855-649-9681 (contact us) |
| Credentialing | handles CAQH and credentialing issues |
| State regulator | Montana Commissioner of Securities and Insurance |
Medicare Advantage
HCSC's Medicare Advantage payer ID (66006) is shared across OK, IL, TX, NM and MT (BCBSOK notice). It is not the commercial professional ID.
Frequently asked questions
Do the HCSC states share one payer ID?
No. Each state has its own commercial payer ID. The shared 66006 is for Medicare Advantage only.
What is the BCBSNM payer ID?
00790, per BCBSNM's claim submission page.
How long do I have to file with BCBSOK?
180 days from the date of service or discharge.
Where do I send Montana paper claims?
BCBSMT, PO Box 660255, Dallas, TX 75266-0255, per BCBSMT's September 2024 notice.
How MCM South helps with BCBS New Mexico, Oklahoma and Montana
MCM South bills Blue plans for psychotherapists and psychiatrists in the states we serve. We verify benefits, submit claims electronically, follow up on denials and appeals, and handle credentialing. Get a free quote. If a BCBS New Mexico, Oklahoma and Montana claim is denied or credentialing stalls, we follow up for you.
MCM South currently serves practices in GA, MA, CT, TX, FL, NY, CO, TN, NC and IL, and has worked in all 50 states. If your state is not on that list, ask us. This page is operational guidance for billing, not legal advice. For real financial or legal exposure, talk to your attorney or compliance officer.
Related: Blue Cross by State · How Blue Cross Blue Shield Works · Billing Terms Glossary · CPT and E/M Code Guide · Who We Serve.
This is the MCM South guide to BCBS New Mexico, Oklahoma and Montana for therapists and psychiatrists: where claims go, how appeals work, and what to check first.
Want a billing team that handles this for you? MCM South bills for psychotherapists and psychiatrists. Get a free quote.