1) Modifiers provide information about services performed and circumstances that don't change the code definition. They indicate components, multiple procedures, sites of service and other details.
2) Harvard Pilgrim accepts up to two modifiers per claim line. Additional modifiers will not be rejected but only the primary two will impact reimbursement.
3) Several common modifiers are described that may impact reimbursement such as 22 for unusual services, 50 for bilateral procedures, and 59 for distinct services. Documentation may be required for consideration.