New to helping someone in New Mexico?
You do not need a law degree to help someone fight a health insurance denial. Start by gathering three basic documents:
- Insurance card — shows which company administers the plan. Use the name and phone number on the card when you call or file paperwork.
- Denial letter or explanation of benefits (EOB) — the notice that says a service was denied, not paid, or needs approval first. Look for appeal instructions and a deadline.
- Summary of Benefits and Coverage (SBC) — helps you tell whether the fight is about medical necessity or whether the benefit exists at all.
Your first tasks: identify what type of plan this is (Marketplace, job-based, Medicaid, Medicare) and write down the appeal deadline from the letter.
New Mexico law gives you an internal appeal with the carrier first in most cases, then a right to external review by an independent review organization (IRO) appointed by the Office of Superintendent of Insurance (OSI).
For steps that work in every state, read these general guides first, then return here for New Mexico rules:
What is different in New Mexico?
- beWellnm: New Mexico's state Marketplace at beWellnm.com. Major 2026 carriers include Blue Cross Blue Shield of New Mexico, Molina, Presbyterian Health Plan, and UnitedHealthcare of New Mexico.
- Prior authorization (59A-22B): NMSA 59A-22B-5 — 7 calendar days standard / 24 hours urgent; missed deadlines → deemed granted; many protected drug classes cannot require PA (59A-22B-8); in-network mental health and SUD services generally cannot require PA (59A-22B-7).
- Internal appeals: File within 180 days (13.10.17.14 NMAC); 30 days pre-service / 60 days post-service standard; 72-hour expedited; late carrier decision → service deemed approved if it appears covered.
- External review: Request from OSI within four months of final internal denial (13.10.17.15 NMAC); IRO decision often within 45 days standard / 72 hours expedited.
- Centennial Care (Medicaid): MCO appeal first (often 60 days), then HCA Office of Fair Hearings (often 90 days from MCO denial)—separate from commercial OSI/IRO review.
Who is in charge of your plan?
- OSI — Managed Health Care Bureau: External review, consumer help — osi.state.nm.us. Toll-free: 855-427-5674 · Albuquerque: 505-827-4601 · IHCAP/grievances: mhcb.grievance@osi.nm.gov
- U.S. Department of Labor: Many self-funded employer plans.
- HCA Office of Fair Hearings: Medicaid and other public assistance appeals — hca.nm.gov/office-of-fair-hearings-faq
- CMS: Medicare and Medicare Advantage.
After appeals are exhausted, see Regulator complaints.