§ 5111

((a)) ((1)) Notwithstanding or any other provision of law and except as provided in paragraph (2) and subsection (c), payment of monetary benefits based on an award or an increased award of compensation, dependency and indemnity compensation, or pension may not be made to an individual for any period before the first day of the calendar month following the month in which the award or increased award became effective as provided under or such other provision of law. ((2)) ((A)) In the case of a veteran who is retired or separated from the active military, naval, air, or space service for a catastrophic disability or disabilities, payment of monetary benefits based on an award of compensation based on an original claim shall be made as of the date on which such award becomes effective as provided under or another applicable provision of law. ((B)) For the purposes of this paragraph, the term “catastrophic disability”, with respect to a veteran, means a permanent, severely disabling injury, disorder, or disease that compromises the ability of the veteran to carry out the activities of daily living to such a degree that the veteran requires personal or mechanical assistance to leave home or bed, or requires constant supervision to avoid physical harm to self or others. ((b)) ((1)) Except as provided in paragraph (2) of this subsection, during the period between the effective date of an award or increased award as provided under or other provision of law and the commencement of the period of payment based on such award as provided under subsection (a) of this section, an individual entitled to receive monetary benefits shall be deemed to be in receipt of such benefits for the purpose of all laws administered by the Secretary. ((2)) If any person who is in receipt of retired or retirement pay would also be eligible to receive compensation or pension upon the filing of a waiver of such pay in accordance with , such waiver shall not become effective until the first day of the month following the month in which such waiver is filed, and nothing in this section shall prohibit the receipt of retired or retirement pay for any period before such effective date. ((c)) ((1)) This section shall not apply to payments made pursuant to . ((2)) In the case of a temporary increase in compensation for hospitalization or treatment where such hospitalization or treatment commences and terminates within the same calendar month, the period of payment shall commence on the first day of such month. ((d)) For the purposes of this section, the term “award or increased award” means— ((1)) an original award or award based on a supplemental claim; or ((2)) an award that is increased because of an added dependent, increase in disability or disability rating, or reduction in income.