[Code of Federal Regulations]
[Title 38, Volume 1]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 38CFR4.22]

[Page 374-375]
 
            TITLE 38--PENSIONS, BONUSES, AND VETERANS' RELIEF
 
                CHAPTER I--DEPARTMENT OF VETERANS AFFAIRS
 
PART 4_SCHEDULE FOR RATING DISABILITIES--Table of Contents
 
                   Subpart A_General Policy in Rating
 
Sec. 4.22  Rating of disabilities aggravated by active service.

    In cases involving aggravation by active service, the rating will 
reflect only the degree of disability over and above the degree existing 
at the time of entrance into the active service, whether the particular 
condition was noted at the time of entrance into the active service, or 
it is determined upon the

[[Page 375]]

evidence of record to have existed at that time. It is necessary 
therefore, in all cases of this character to deduct from the present 
degree of disability the degree, if ascertainable, of the disability 
existing at the time of entrance into active service, in terms of the 
rating schedule, except that if the disability is total (100 percent) no 
deduction will be made. The resulting difference will be recorded on the 
rating sheet. If the degree of disability at the time of entrance into 
the service is not ascertainable in terms of the schedule, no deduction 
will be made.