The bilateral factor (extra 10% added to combined disability rating) applies when a veteran has disabilities on paired limbs and/or paired skeletal muscles.

  • The disability ratings for paired legs, arms, and skeletal muscles get calculated in their order of severity, resulting in one combined disability rating.
  • Ten percent (10%) is added to the combined disability rating, then rounded to the nearest integer (bilateral factor).
  • The bilateral factor is then combined in order of severity with the individual factors.

STEP 1: Disability Rating

  • Enter disabilities that qualify for the bilateral factor (even 0%) into the Bilateral Factors section. Condition names are optional.
  • Enter remaining disabilities into the Individual Factors section (even 0%). The calculator will automatically enter the value of the bilateral factor. Condition names are optional.
  • Receive Estimated Disability Rating value.

Note: For each section, the web app sorts the disabilities in order of severity prior to calculating the Estimated Disability Rating, so the order of input does not matter.

STEP 2: Print Results

  • If there are Bilateral Factors and Individual Factors, then make sure both sections are open prior to printing.
  • If there are no Individual Factors, then click on the Individual Factors tab to close that section prior to printing.
  • If there are no Bilateral Factors, then click on the Bilateral Factors tab to close that section prior to printing.

NOTE: When you leave this page or click refresh, all the values you entered will be cleared.


For more VA disability calculators, navigate from the menu bar above called “Veterans” or choose the calculator that you are looking for by clicking the links below.

Other useful guides from MicroHealth on VA Disability also found in the menu above under “Veterans”.