MoneyInJapan

Critical-illness insurance

Cancer, stroke, and heart-attack definitions, payment triggers, and premium waivers.

Direct answers

Critical-illness cover pays a lump sum or waives premiums for defined cancer, acute myocardial infarction, stroke, and sometimes other diseases — but diagnosis alone may be insufficient; the policy’s medical definitions control.

Public coverage first · 2026 edition

Benefits may vary by: insurer · employment status · municipality · household

Get professional or administrator help: Ask the insurer to confirm the exact payment trigger before you rely on the cover.

Review due: 2026-10-30

Key points

  • Heart attack or stroke often requires surgery, specified treatment, or lasting symptoms.
  • Everyday meanings differ from the policy’s medical definitions.
  • A lump sum can fund debt reduction, leave, rehabilitation, or home changes.
  • Compare the trigger conditions across products carefully.

Read the medical definition

Check exactly what triggers payment — a named diagnosis, a specified procedure, a hospitalization, or a duration of symptoms — because two products with the same name can pay very differently.

Who this is for

  • Residents mapping protection before shopping for private insurance

What this is not

  • A quote, policy ranking, or individualized recommendation
Important cautions
  • Eligibility, contributions, waiting periods, exclusions, and benefit amounts can vary. Confirm your case with the administering insurer or authority before acting.

Sources