https://www.benefits.va.gov/pension/aid_attendance_housebound.asp
Veterans and survivors who are eligible for a VA pension and require the aid and attendance of another person, or are housebound, may be eligible for additional monetary payment. These benefits are paid in addition to monthly pension, and they are not paid without eligibility to Pension.
Since Aid and Attendance and Housebound allowances increase the pension amount, people who are not eligible for a basic pension due to excessive income may be eligible for pension at these increased rates. A Veteran or surviving spouse may not receive Aid and Attendance benefits and Housebound benefits at the same time.
The Aid & Attendance (A&A) increased monthly pension amount may be added to your monthly pension amount if you meet one of the following conditions:
This increased monthly pension amount may be added to your monthly pension amount when you are substantially confined to your immediate premises because of permanent disability.
You may apply for Aid and Attendance or Housebound benefits by writing to the Pension Management Center (PMC) that serves your state. You may also visit your local regional benefit office to file your request. You can locate your local regional benefit office using the VA Facility Locator.
You should include copies of any evidence, preferably a report from an attending physician validating the need for Aid and Attendance or Housebound type care.