The Medicare Claims System has been modified to allow carriers to read four modifier fields. In the past, whenever more than two modifiers were needed, they had to be placed in Item 19 (or the comments fields for electronic claims) with modifier 99 indicated on the line item following the procedure code. Effective immediately, you can submit up to four modifiers on paper claims or in the specific electronic fields, based on your billing option.

Note: Modifiers 26, TC, SG and QW must be billed in the first modifier field.