20 C.F.R. § 702.803
The following definitions apply to this subpart:
Calculated compensation rate means the amount of weekly compensation for total disability or death that a claimant would be entitled to if there were no maximum rates, minimum rates, or section 10(f) adjustments.
Date of disability. (1) Except as provided in paragraph (2) of this definition, the date of disability is the date on which the employee first became incapable, because of an injury, of earning the same wages the employee was receiving at the time of the injury.
(2) Exceptions:
Fiscal year or FY means the period from October 1 of a calendar year until September 30 of the following calendar year.
Maximum rate means the maximum weekly compensation rate calculated by the Department for a given fiscal year as described in § 702.804(b).
Minimum rate means the minimum weekly compensation rate calculated by the Department for a given fiscal year as described in § 702.804(c).
Section 10(f) adjustment means the annual increase that certain claimants receiving compensation for permanent total disability or death are entitled to each fiscal year under 33 U.S.C. 910(f) and as calculated by the Department as described in § 702.701(b).