20 CFR § 30.211
How does a claimant establish that the employee has or had contracted cancer?
February 18, 2021
A claimant establishes that the employee has or had contracted a specified cancer (as defined in §30.5(gg)) or other cancer with medical evidence that sets forth an explicit diagnosis of cancer and the date on which that diagnosis was first made.
[84 FR 3049, Feb. 8, 2019]