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Arizona State Law Library · Guide 21 of 23

MedPay, Medical Liens & Subrogation After an Arizona Crash

Medical payments coverage can provide immediate first-party benefits after a crash, but the payment trail does not end when a medical bill is paid. Arizona has distinct rules governing MedPay insurer liens, health-care-provider liens, health-plan reimbursement rights and the distribution of a later liability settlement.

Current-law framework: 2026 Authority check: Sept. 13, 2026 A.R.S. § 20-259.01(J) A.R.S. §§ 33-931–33-937

MedPay is first-party automobile insurance

Medical payments coverage, commonly called MedPay, is automobile insurance that pays covered medical expenses under the terms and limits of the insured's own policy.

It is different from bodily-injury liability insurance. Liability coverage protects an insured against claims asserted by others. MedPay is a first-party benefit available to persons who satisfy the policy's coverage terms.

First party

Your policy

The claim is made under an applicable automobile policy rather than waiting for a liability claim against another driver to resolve.

Medical expense

Coverage-based payment

MedPay generally concerns covered medical expenses arising from an automobile accident, subject to the policy language and limit.

Separate issue

Fault may not control payment

Whether MedPay is available is primarily a coverage question, distinct from proving the other driver's tort liability.

Start with the actual policy. Determine who qualifies as an insured, the MedPay limit, applicable exclusions, submission requirements, and what medical expenses have already been paid before analyzing reimbursement or liens.

Arizona's MedPay reimbursement rule begins above $5,000

Arizona historically prohibits the assignment or subrogation of a personal-injury claim unless a statute creates an exception. The Arizona Supreme Court applied that principle to automobile medical-payment reimbursement provisions in cases including State Farm v. Knapp and Allstate v. Druke.

Arizona later enacted a specific statutory MedPay lien in A.R.S. § 20-259.01(J).

Current statutory rule: an automobile insurer that pays MedPay benefits may have a lien against the portion of MedPay payments that exceeds $5,000, provided the insurer satisfies the statute's requirements.
Example MedPay paid Maximum amount potentially within § 20-259.01(J)
Example 1 $5,000 $0
Example 2 $7,500 Amount above $5,000: $2,500
Example 3 $10,000 Amount above $5,000: $5,000
Example 4 $25,000 Amount above $5,000: $20,000

These examples identify the statutory ceiling potentially subject to the MedPay lien mechanism. They do not establish that a particular insurer has actually perfected or is entitled to collect that amount.

The MedPay insurer must satisfy the statutory lien procedure

A.R.S. § 20-259.01(J) does more than authorize a lien. It establishes specific steps for creating and perfecting it.

Recordation

60-day requirement

The insurer must record the required lien statement in the county where the accident occurred within 60 days after issuing a MedPay payment exceeding $5,000.

Notice

Five-day mailing requirement

Within five days after recording the lien, the insurer must mail the required copy to the insured and the identified allegedly responsible parties and carriers.

Reduction

Fair and equitable compromise

The statute expressly directs the insurer to compromise its MedPay lien in a fair and equitable manner.

After payment

Lien release

Once the lien is satisfied, the lienholder must issue and record a release within the period required by the statute.

A reimbursement demand is not the same thing as a perfected lien. Obtain the actual recorded lien, verify the accident county, recording date, payment dates, amount claimed, notices and subsequent amendments before accepting the amount demanded.

Health-care-provider liens are a different system

Arizona health-care providers may have statutory lien rights under A.R.S. §§ 33-931 through 33-937. These are separate from an automobile insurer's MedPay lien.

Under the current version of A.R.S. § 33-931, a provider lien may extend to appropriate liability or indemnity claims arising from the injuries for which treatment was provided.

Important current-law limitation: A.R.S. § 33-931 expressly excludes health insurance, MedPay, uninsured-motorist coverage and underinsured-motorist coverage from the claims to which the statutory provider lien extends.

This is an important change from prior Arizona law. Older cases interpreting earlier statutory language must therefore be read against the current statute rather than treated as a statement of the present provider-lien rule.

Provider lien perfection

A.R.S. § 33-932 establishes recording and notice requirements for health-care-provider liens. The timing and requirements differ depending on the type of provider.

Never treat the face amount of a medical lien as automatically payable. Determine whether the lien is authorized, whether it was properly perfected, what recovery it legally attaches to, what amounts remain owed, and whether statutory compromise is required.

Arizona now requires fair and equitable compromise of qualifying provider liens

A.R.S. § 33-937 requires interested parties to compromise qualifying liens or assignments under § 33-931 so that settlement is fair and equitable to all parties.

The statute identifies factors to consider, including:

  • the nature and extent of the injury;
  • available liability insurance or indemnity;
  • payments already received by the provider;
  • the nature and complexity of the medical services;
  • the provider's customary charges;
  • the total third-party recovery;
  • other valid liens and their priority;
  • attorney fees and litigation costs;
  • reductions accepted by other claimants;
  • other valid reimbursement or subrogation claims; and
  • other relevant circumstances.
If the interested parties cannot agree on the appropriate compromise, § 33-937 authorizes an action for judicial determination of the appropriate reduction.

The one-third provider-lien rule requires careful reading

Current A.R.S. § 33-931 contains a provision exempting one-third of certain third-party judgments, settlements or awards from a statutory provider lien or assignment.

But the same statute contains specific exceptions affecting whether that protection applies, including circumstances involving uncovered services, out-of-network providers, persons without health insurance, and written elections not to use available health coverage.

Do not mechanically subtract one-third from every Arizona medical lien. Apply the current language of § 33-931(E) to the actual provider, insurance status, treatment and agreements involved.

Health insurance creates a separate reimbursement analysis

A medical bill can pass through several different payment systems. Each system may have different reimbursement rights.

Payment source Primary issue to investigate
Arizona automobile MedPay Policy coverage plus the limited statutory insurer lien under A.R.S. § 20-259.01(J).
Private health insurance Plan language, state insurance law and any applicable reimbursement or subrogation provisions.
ERISA plan Determine whether the plan is self-funded and examine the actual governing plan documents and federal reimbursement provisions.
Medicare / Medicare Advantage Federal Medicare secondary-payer and reimbursement law may create rights independent of Arizona's common-law anti-subrogation rule.
AHCCCS / Medicaid Arizona and federal Medicaid recovery statutes can create independent lien and reimbursement rights.
Workers' compensation Arizona workers' compensation statutes contain separate third-party recovery and lien rules.
Health-care provider Determine whether a valid statutory lien exists under A.R.S. §§ 33-931–33-937 and what recovery it actually attaches to.
There is no single Arizona "subrogation rule." The correct result depends on who paid the bill, what type of plan or coverage made the payment, the governing statute or plan document, and the source of the later recovery.

Do not calculate the client's net recovery from the gross settlement alone

A settlement can look adequate until all valid reimbursement claims, liens, unpaid medical balances, fees and costs are identified.

Before final settlement, build a distribution ledger showing:

  • gross settlement amount;
  • attorney fees, if any;
  • litigation costs;
  • MedPay benefits paid;
  • any properly perfected MedPay insurer lien;
  • provider balances;
  • recorded provider liens;
  • health-insurance payments;
  • Medicare, AHCCCS or other governmental claims;
  • ERISA or other plan reimbursement claims;
  • negotiated reductions; and
  • the claimant's actual net recovery.
Do this before signing the release. A gross settlement figure does not tell the injured person what will actually remain after enforceable claims against the recovery are resolved.

Citizen workflow for Arizona medical payments and liens

Obtain the complete automobile policy. Confirm whether MedPay exists, its limit, the persons insured and all applicable terms and exclusions.
Open the MedPay claim promptly. Obtain a claim number and written instructions for submitting medical bills and records.
Maintain a medical-payment ledger. Track each provider, billed charge, health-insurance adjustment, MedPay payment, patient payment and remaining balance.
Track MedPay payments cumulatively. The $5,000 threshold in A.R.S. § 20-259.01(J) makes the total amount paid important.
Demand a copy of any claimed MedPay lien. Verify its amount, recording date, county, mailing notices and payment history.
Search for provider liens. Determine whether a hospital, physician, ambulance company or other provider recorded a lien and whether it was properly perfected.
Determine what each lien actually attaches to. Do not assume a liability lien also reaches MedPay, UM, UIM or health-insurance proceeds.
Identify every health-plan reimbursement claimant. Separate private insurance, ERISA, Medicare, AHCCCS, workers' compensation and other benefit systems.
Request reductions before settlement is distributed. Apply the Arizona statutory compromise rules where applicable and negotiate other reimbursement claims under the law governing them.
Prepare the final settlement ledger. Confirm the gross recovery, all valid deductions and the claimant's actual net recovery before funds are finally distributed.

Authority behind this guide

Arizona statutes

A.R.S. § 20-259.01(J) — Medical payments liens

Authorizes a limited MedPay insurer lien for qualifying payments exceeding $5,000, establishes recording and notice requirements, and requires fair and equitable compromise.

A.R.S. § 33-931 — Health-care-provider liens

Establishes qualifying provider liens and defines the claims to which they may extend. Current law expressly excludes health insurance, MedPay, UM and UIM coverage from the statutory lien's reach.

A.R.S. § 33-932 — Perfecting provider liens

Establishes recording, timing, content and notice requirements applicable to Arizona health-care-provider liens.

A.R.S. § 33-934 — Enforcement

Addresses the effect of settlement or release on a valid lien and establishes the statutory action for lien enforcement.

A.R.S. § 33-937 — Fair and equitable compromise

Requires compromise of qualifying provider liens using specified statutory factors and permits judicial determination when the parties cannot reach agreement.

Important Arizona cases

Allstate Insurance Co. v. Druke
118 Ariz. 301, 576 P.2d 489 (1978)

Arizona Supreme Court decision applying Arizona's prohibition against assignment and subrogation of personal-injury claims to an automobile insurer's effort to obtain repayment of MedPay benefits. The later enactment of § 20-259.01(J) creates a limited statutory MedPay lien.

State Farm Fire & Casualty Co. v. Knapp
107 Ariz. 184, 484 P.2d 180 (1971)

Earlier Arizona Supreme Court authority rejecting an automobile medical-payment subrogation provision as an impermissible assignment of a personal-injury claim.

Harleysville Mutual Insurance Co. v. Lea
2 Ariz. App. 538, 410 P.2d 495 (1966)

Foundational Arizona authority explaining the relationship between MedPay subrogation and Arizona's rule against assignment of personal-injury causes of action.

Dignity Health v. Farmers Insurance Co. of Arizona
Arizona Court of Appeals (2019)

Applied the earlier version of Arizona's provider-lien statute and distinguished health insurance from MedPay. The Legislature later amended § 33-931 so that current provider liens expressly exclude MedPay, UM and UIM proceeds. The case must therefore be read in its historical statutory context.

Lo Piano v. Hunter
173 Ariz. 172, 840 P.2d 1037 (App. 1992)

Reinforces Arizona's longstanding common-law rule against assignment of personal-injury claims, subject to statutory exceptions.

Bottom line

Arizona MedPay can provide valuable first-party medical benefits before a liability claim is resolved. But reimbursement rights are not automatic. Arizona limits the automobile insurer's statutory MedPay lien to qualifying payments above $5,000 and imposes perfection and compromise requirements. Provider liens operate under a different statutory system, and current Arizona law expressly excludes MedPay, UM, UIM and health- insurance proceeds from the ordinary provider lien. Identify every payment source, verify every claimed lien, determine exactly what recovery it reaches, negotiate required reductions, and calculate the claimant's net recovery before settlement funds are distributed.

Public legal education only. Current Arizona statutes, federal law, governing insurance policies, benefit-plan documents and controlling appellate decisions govern. This guide is a research and educational resource and is not individualized legal advice. Liens and reimbursement claims should be verified against current official records and governing documents before settlement funds are distributed.