C. Equity adjustments in customary charge screens

Once a carrier has established the customary charge screens for a fiscal year, further increases (other than to correct errors) are permitted only in individually identified and highly unusual situations where equity clearly indicates that the increases are warranted. Request for revisions in customary charge profiles are initiated only by physicians or suppliers furnishing covered services. Such requests are neither encouraged nor discouraged by the carrier, and each request is handled on its own merits. The following considerations are taken into account, as applicable, in determining whether unusual circumstances warrant a revision in a customary charge profile in a particular situation: