X1 is a valid 2023 HCPCS Modifier that could be used to indicate Continuous/broad services: for reporting services by clinicians, who provide the principal care for a patient, with no planned endpoint of the relationship; services in this category represent comprehensive care, dealing with the entire scope of patient problems, either directly or in a care coordination role; reporting clinician service examples include, but are not limited to: primary care, and clinicians providing comprehensive care to patients in addition to specialty care.

X1 Modifier has been in effect since Jan 01, 2018.

Short description for X1 HCPCS Modifier code:

Continuous/broad services