Relative Value Unit (RVU)

Key facts

System

Resource-based relative value scale (RBRVS), used by Medicare since 1992

Components

Physician work, practice expense, malpractice (professional liability)

Set by

CMS, through annual Physician Fee Schedule rulemaking

Main advisory input

AMA/Specialty Society RVS Update Committee (RUC)

Geographic adjustment

Geographic practice cost indices (GPCIs) for each component

What is a relative value unit?

Every CPT and HCPCS code paid under the Medicare Physician Fee Schedule carries RVUs that express how resource-intensive the service is compared with other services. A service with twice the total RVUs of another is paid roughly twice as much in the same locality and setting.

RVUs are not dollars. They become payment only after geographic adjustment and multiplication by the annual conversion factor. Because the scale is relative, a change in the value of one service can shift payment for others.

How RVUs are structured

Each service has three RVU components, combined in a standard formula:

• Work RVUs: the time, technical skill, mental effort, judgment and stress of the clinician furnishing the service.
• Practice expense RVUs: clinical staff, supplies, equipment and overhead, with separate facility and non-facility values.
• Malpractice RVUs: the cost of professional liability insurance.
• Payment: [(work RVU x work GPCI) + (practice expense RVU x PE GPCI) + (malpractice RVU x MP GPCI)] x conversion factor.

Why RVUs matter

Work RVUs (wRVUs) are the standard productivity measure in physician employment. Health systems commonly pay employed physicians partly per wRVU, and compensation surveys benchmark productivity in wRVUs by specialty, so RVU values affect recruiting offers and practice valuations.

Multiplying service volumes from Medicare utilization data by RVUs gives a measure of clinical workload that does not depend on local prices. Device and diagnostics companies also watch the valuation of new CPT codes, since it affects whether a procedure is financially viable for physicians to perform.

How RVUs are valued

The American Medical Association/Specialty Society RVS Update Committee (RUC) reviews survey data from specialty societies and recommends values for new and revised codes. CMS is not bound by those recommendations and sets final values through notice-and-comment rulemaking. Critics argue the process has historically favored procedures over evaluation and management services, and CMS periodically reviews codes it considers potentially misvalued.