Modifier GX in Medical Billing: Complete Billing & Usage Guide
Modifier GX is used in medical billing to indicate that a voluntary Advance Beneficiary Notice (ABN) has been issued to the patient for a service that is expected to be…
Modifier GZ in Medical Billing – Complete Billing & Usage Guide
Modifier GZ is reported in medical billing when a healthcare provider expects Medicare to deny a service because it is not considered medically necessary and no Advance Beneficiary Notice (ABN)…
Modifier 90 in Medical Billing – Complete Billing & Usage Guide
Modifier 90 is used in medical billing when a healthcare provider performs laboratory testing through an outside or reference laboratory instead of conducting the test within their own facility. Correctly…
CPT 90853 – Documentation, Billing, Reimbursement & Telehealth Guide (2026)
Group therapy plays an important role in behavioral health treatment. Many patients benefit from structured therapeutic sessions that allow them to share experiences, develop coping strategies, improve communication skills, and…
CPT 90839 – Billing Guidelines, Documentation, Reimbursement & Time Requirements Guide
Behavioral health professionals frequently encounter patients experiencing acute psychological crises that require immediate intervention. These situations often involve severe emotional distress, suicidal ideation, homicidal thoughts, traumatic events, psychiatric emergencies, or…
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