MISSOURI GUIDE 05

Missouri Uninsured & Underinsured Motorist Coverage

Missouri requires uninsured motorist coverage in motor-vehicle liability policies at not less than the statutory bodily-injury minimum limits. Underinsured motorist coverage, by contrast, depends principally on the policy actually issued and is not mandated in the same manner by RSMo § 379.203.

  • Obtain every declarations page and UM/UIM endorsement that may apply.
  • Identify each person who qualifies as an insured under the applicable coverage.
  • Analyze stacking, offsets, exclusions and policy definitions separately for UM and UIM.
  • Do not assume the existence or limits of UIM coverage from the presence of mandatory UM coverage.

Primary Missouri Source

RSMo § 379.203 — Uninsured Motorist Coverage

Current-law review: September 16, 2026. Missouri UM and UIM analysis can differ materially because UM is statutory while UIM often turns on policy language.