M21-1 Adjudication Procedures Manual

The VA's internal manual for how adjudicators develop, examine, and decide disability claims. A browsable, searchable copy of all 429 sections. This is the procedure VA follows; the rating percentages themselves live in 38 CFR Part 4.

M21-1 is a U.S. government work (public domain), reproduced here for reference. Search any term in the site search bar to jump to the relevant section.

Part II

Part III

Part V

Part VI

Part VII

Part VIII

Part IX

Part X

Part XI

Part XII

Part XIII