6.3 Part B Medical Payments

Key Takeaways

  • Part B pays reasonable medical and funeral expenses from an auto accident regardless of fault (first-party, no-fault), for expenses incurred within three years.
  • Limits apply per person, per accident (commonly $1,000-$10,000), and do not stack across multiple injured occupants.
  • You and family members are covered as occupants of any auto and as pedestrians; other persons are covered only while occupying your covered auto.
  • Med Pay is generally excess over other auto medical coverage on non-owned vehicles and may carry subrogation rights against duplicated liability recoveries.
  • Exclusions include fewer-than-four-wheel vehicles, livery use, regular-use non-covered autos, vehicles used as residences, racing, war/nuclear, and workers-compensation-eligible injuries.
Last updated: June 2026

Part B - Medical Payments Coverage

Part B pays reasonable and necessary medical and funeral expenses incurred because of bodily injury caused by an auto accident, and it pays regardless of fault. It is a first-party coverage - it pays the insured and certain occupants without anyone having to be proven negligent. Expenses must be incurred within three years of the accident.

Because Part B is no-fault, it provides fast, small-dollar medical reimbursement that supplements the insured's health plan and avoids waiting for a liability determination. Typical written limits are modest - $1,000 to $10,000 per person, applied per person, per accident (not a single shared limit).

Who Is an Insured Under Part B

The Part B definition of "insured" splits into two groups:

  1. You or any family member while occupying (in, upon, getting in/out of) any auto, or when struck as a pedestrian by any motor vehicle designed for use on public roads (this pedestrian coverage follows the person, not the car).
  2. Any other person while occupying your covered auto - guest passengers in your insured vehicle are covered, but only while in your covered auto, not when they are pedestrians or in other vehicles.

This person-vs.-vehicle distinction is a classic exam item: a family member is covered as a pedestrian or in any auto; a non-family passenger is covered only inside your covered auto.

Coordination With Other Coverage and Subrogation

Med Pay can overlap with health insurance, Part C, and the at-fault driver's Part A liability. Standard rules:

  • Med Pay is generally excess over other auto medical coverage on a vehicle the insured does not own.
  • If the insured collects under both Med Pay and a liability settlement, the insurer may have subrogation/reimbursement rights for amounts duplicated, depending on state law.
  • Med Pay does not require the insured to prove fault, which is why it pays quickly.

Worked example. An insured passenger incurs $7,500 in medical bills. The PAP carries $5,000 Med Pay per person. Part B pays its $5,000 limit; the remaining $2,500 must be pursued through health insurance or the at-fault party's liability coverage. Med Pay does not stack across multiple injured persons - each injured insured has a separate $5,000 limit.

Med Pay vs. PIP (No-Fault States)

Med Pay is easy to confuse with Personal Injury Protection (PIP), the broader first-party benefit required in no-fault states. Both pay regardless of fault, but they differ in scope:

FeaturePart B Med PayPIP (No-Fault)
Medical/funeral expenseYesYes
Lost wagesNoYes (usually a percentage, capped)
Essential-services / replacement-servicesNoYes
Survivor / death benefitsFuneral onlyYes
Right to sue the at-fault partyUnrestrictedLimited by a verbal or monetary threshold

In add-on and traditional-fault states the PAP offers Med Pay; in no-fault states the PIP endorsement replaces or supplements it. Exam questions often hinge on the fact that only PIP pays lost wages and replacement services - Med Pay is strictly medical and funeral. The no-fault "threshold" (verbal injury description or a dollar amount of medical bills) is what an injured person must exceed before retaining the right to sue in tort.

Part B Exclusions (Traps)

Excluded SituationNote
Injury while occupying a vehicle with fewer than four wheelse.g., motorcycle
Injury while the covered auto is used to carry persons/property for a feecar pools excepted
Injury while occupying a vehicle (other than your covered auto) furnished for regular usenamed insured & family
Injury while occupying a vehicle used as a residence or premisesparked living quarters
Injury arising out of war, nuclear hazard, or racingspeed-contest exclusion
Injury while using a vehicle without a reasonable belief of entitlementmirrors Part A

Note that Part B is not workers compensation: injuries that should be covered by workers compensation are excluded to avoid duplication.

Test Your Knowledge

A non-family guest passenger riding in the insured's covered auto is injured. The same evening, the named insured is struck as a pedestrian by a passing car. Which medical-payments outcome is correct under Part B?

A
B
C
D
Test Your Knowledge

An insured carries $5,000 Med Pay per person. Two insured occupants are hurt, incurring $4,000 and $6,200 in medical bills. What does Part B pay in total?

A
B
C
D