Adds a new subsection (c) providing benefits for permanent but not total disability, redesignates existing subsections (c)-(q) as (d)-(r), updates cross-references and textual amendments throughout section 1201 and related provisions, and increases interim payment authority language to specify a $6,000 cap (adjusted under subsection (i)).

Amends section 1205 (34 U.S.C. 10285) to add notice and interim benefits procedures, outreach, reporting summary requirement, and annual Comptroller General audit provisions.

Amends section 1206(b) (34 U.S.C. 10288(b)) to modify subpoena-related provisions, including requiring the Bureau to issue subpoenas to public agencies that fail to provide requested information within 30 days, unless an extension of up to 60 days is approved.

Amends section 1204 (34 U.S.C. 10284) to correct typographical errors, add definitions for 'complete claim' and 'gainful work', and redesignate certain paragraphs.