7801, 7802, 7803, 7804, or 7805), depending upon the predominant disability. 38 C.F.R. § 4.118, DC 7806. Here, the language of Diagnostic Code 7806 is unambiguous: the diagnostic code explicitly mentions corticosteroids as an example of “systemic therapy” and does not further distinguish between different types of corticosteroid application. Otherwise stated, as used in Diagnostic Code 7806, “constant or near-constant systemic therapy such as corticosteroids .or other immunosuppressive drugs [ ] required during the past 12-month period,” defines systemic therapy as the use of corticosteroids without any limitation of type of use, and it is well settled that the Board is not permitted to add criteria not included in the rating schedule. See Drosky v. Brown, 10 Vet.App. 251, 255 (1997) (<HOLDING>); Pernorio v. Derwinski, 2 Vet.App. 625, 628
holding that the boards imposition of additional requirements other than those specified in the diagnostic code was impermissible holding that the statement of specific grounds in a motion for a new trial waives all other grounds not specified holding that the faa extends to employment cases for employees other than those engaged in transportation of goods holding that appellate review is limited to the issues specified in the coa holding that the faa extends to employment cases for employees other than those engaged in transportation