What dispute deadlines should providers track in New Mexico?

Accident Notice: Notice to insurer as soon as reasonably practicable; MedPay Claim Submission: Submission within standard policy billing deadlines (typically 1 to 3 years); Clean Claim Payment Window: 30 calendar days for electronic claims; 45 days for paper claims (NMSA 1978, § 59A-16-21.1). Verify the trigger date, current agency notices, and any extension before acting.

Which agencies administer these rules in New Mexico?

The guide identifies New Mexico Office of Superintendent of Insurance (OSI). The correct agency depends on the plan and claim jurisdiction.

Auto Accident, PIP & Medical Billing State Guides

New Mexico Auto Accident, PIP & Medical Billing Laws

New Mexico operates an At-Fault automobile insurance framework under Chapter 59A and Chapter 66 of the New Mexico Statutes Annotated (NMSA 1978). The state enforces pure comparative negligence under Scott v. Rizzo. Medical providers bill optional first-party Medical Payments (MedPay), subject to New Mexico's Made-Whole doctrine, and enforce statutory hospital liens under NMSA 1978, § 48-8-1.

Accountability & Review

Reviewed by Millennova Legal Operational Integrity Team, Senior Audit and Arbitration Analysts

Last Reviewed

2026-03-01

Plain-language overview

At-Fault / Traditional Tort (Pure Comparative Fault & New Mexico Hospital Lien Act)

New Mexico is a traditional tort jurisdiction that does not mandate Personal Injury Protection (PIP) insurance. Motor vehicle crash medical expenses are funded through optional first-party Medical Payments (MedPay) coverage, private health insurance, or third-party automobile liability insurance. Under Scott v. Rizzo, liability is apportioned under pure comparative negligence principles. MedPay subrogation by auto insurers is subordinate to the Made-Whole doctrine under White v. Sutherland. Hospitals secure treatment receivables against third-party liability recoveries pursuant to the New Mexico Hospital Lien Act.

PIP and MedPay coverage

Optional Med Pay Coverage

MedPay is optional in New Mexico (commonly written in limits of $1,000 to $10,000+ per person), providing no-fault reimbursement for reasonable medical, surgical, dental, hospital, and ambulance expenses incurred as a result of an automobile collision

Made Whole Doctrine

Under New Mexico common law (White v. Sutherland; Amica Mutual Ins. Co. v. Maloney), an insurer's contractual subrogation right cannot be enforced until the insured has been fully compensated for all economic and non-economic losses

Assignment Of Benefits

Healthcare providers routinely obtain patient assignments of MedPay benefits for direct claims submission to automobile insurers

Medical fee schedule and reimbursement rules

Name

Reasonable and Customary Fee Standard

Rules

New Mexico does not enforce a statutory fee schedule table for motor vehicle accident medical bills outside of workers' compensation. Providers bill standard reasonable and customary charges prevailing in the local medical community for comparable care.

Cpt Basis

CPT/HCPCS itemized coding on standard CMS-1500 or UB-04 billing claims

Preauthorization and utilization review

Requirement

Preauthorization is not required by statute for emergency trauma care or initial acute stabilization. Elective surgical procedures and prolonged physical therapy regimens are evaluated under insurer medical necessity guidelines.

Carrier Examinations

Under standard auto policy terms, insurers may request medical records or independent physician reviews to evaluate causal relationship to the collision.

Appeals and dispute resolution

Prompt Payment Statute

Under NMSA 1978, § 59A-16-21.1, insurers must pay clean medical claims within 30 calendar days for electronic claims (45 calendar days for paper claims). Claims not paid within these timeframes accrue interest at the rate of 1.5% per month.

Hospital Lien Act

Under the New Mexico Hospital Lien Act (NMSA 1978, § 48-8-1 et seq.), every hospital in New Mexico has a statutory lien upon all claims, settlements, and judgments of an injured person for reasonable hospital charges. To perfect the lien, the hospital must file a verified notice of claim of lien in the office of the county clerk within 90 days after discharge, and mail a copy to the injured person and the liability insurer.

Dispute Forum

New Mexico District Court (or Magistrate Court for small claims within jurisdictional limits) for civil recovery actions.

Claim and dispute deadlines

Deadlines can depend on the trigger event and may be affected by agency relief notices. Confirm the live rule before filing.

Event	Timeframe
Accident Notice	Notice to insurer as soon as reasonably practicable
MedPay Claim Submission	Submission within standard policy billing deadlines (typically 1 to 3 years)
Clean Claim Payment Window	30 calendar days for electronic claims; 45 days for paper claims (NMSA 1978, § 59A-16-21.1)
Hospital Lien Perfection	Must be filed with county clerk within 90 days of discharge (NMSA 1978, § 48-8-2)
Statute of Limitations	3 years from accident date for personal injury tort claims (NMSA 1978, § 37-1-8); 6 years for written contracts

Documentation checklist

New Mexico MedPay Claim Application Form
Executed Assignment of Benefits (AOB) and medical records authorization
Itemized CMS-1500 or UB-04 billing form with CPT/HCPCS codes and ICD-10 diagnostic coding
Contemporaneous medical records, emergency intake documentation, operative reports, and imaging findings
Recorded Notice of Hospital Lien with county clerk recording stamp (NMSA 1978, § 48-8-2)
Insurer Explanation of Benefits (EOB) or written explanation of claim determination

Responsible agencies

New Mexico Office of Superintendent of Insurance (OSI)Statewide Regulation of Auto Insurers, Rate Filings & Consumer Inquiries

Primary legal and regulatory sources

New Mexico Statutes Annotated 1978 Chapter 48, Article 8 (Hospital Liens)New Mexico Compilation Commission · 2024
New Mexico Statutes Annotated 1978 Section 59A-16-21.1 (Timely Payment of Clean Claims)New Mexico Compilation Commission · 2024

This operational reference is educational, is not legal advice, and does not create an attorney-client relationship.

Common questions

What rules govern auto accident, pip & medical billing state guides in New Mexico?: New Mexico operates an At-Fault automobile insurance framework under Chapter 59A and Chapter 66 of the New Mexico Statutes Annotated (NMSA 1978). The state enforces pure comparative negligence under Scott v. Rizzo. Medical providers bill optional first-party Medical Payments (MedPay), subject to New Mexico's Made-Whole doctrine, and enforce statutory hospital liens under NMSA 1978, § 48-8-1.
What dispute deadlines should providers track in New Mexico?: Accident Notice: Notice to insurer as soon as reasonably practicable; MedPay Claim Submission: Submission within standard policy billing deadlines (typically 1 to 3 years); Clean Claim Payment Window: 30 calendar days for electronic claims; 45 days for paper claims (NMSA 1978, § 59A-16-21.1). Verify the trigger date, current agency notices, and any extension before acting.
Which agencies administer these rules in New Mexico?: The guide identifies New Mexico Office of Superintendent of Insurance (OSI). The correct agency depends on the plan and claim jurisdiction.