Overview
The Medicare Physician Fee Schedule (MPFS) is the annual CMS fee schedule governing Medicare Part B payment for physician and other professional services. Published each fall effective the following January 1, the MPFS implements the Resource-Based Relative Value Scale (RBRVS) methodology: each of approximately 10,000 covered CPT/HCPCS codes is assigned Relative Value Units (RVUs) in three categories — work, practice expense, and malpractice — and the RVUs are multiplied by the annual Conversion Factor and Geographic Practice Cost Indices (GPCIs) to produce payment.
MPFS covers physician services, non-physician practitioner services (NPs, PAs, psychologists, social workers, etc. at reduced percentages), diagnostic services, therapy services, and certain drugs and devices when billed as part of a professional service. Services outside MPFS use their own payment systems — hospital outpatient uses OPPS, ambulatory surgery centers use the ASC Payment System, independent laboratories use the Clinical Laboratory Fee Schedule.
The MPFS Proposed Rule is published each July; stakeholder comments are received; the Final Rule is published late October or early November. Updates include RVU recalibrations (some driven by RUC recommendations, some by CMS-identified misvalued codes), conversion factor updates, GPCI updates, new CPT code additions, coverage expansions for new services (recent examples: expanded telehealth coverage, chronic care management, principal care management, advance care planning), and program changes affecting QPP/MIPS.
Significant recent MPFS policy directions include progressive E/M code recalibration (substantially raising wRVUs for office visits and reducing them for certain procedural services to address perceived under-valuation of cognitive work), introduction of G-codes for longitudinal care management (CCM, PCM, BHI), expansion of telehealth codes post-PHE, site-neutrality enforcement, and incremental quality-program integration via MIPS payment adjustments applied on top of MPFS.
For RCM, MPFS is the reference fee schedule for Medicare Part B revenue and — because most commercial contracts express rates as multiples of Medicare — the implicit reference for commercial revenue as well. Practices routinely run MPFS-based scenario analyses when considering service line investments, compensation adjustments, or contract renewal positions. MGMA's annual Physician Compensation and Production Survey benchmarks wRVU production and compensation per wRVU, providing specialty-specific norms.
Operationally, practice management systems must keep MPFS data current. Annual refresh cycles in early January (covering the January 1 effective date) require updated RVU tables, CF, GPCI-adjusted rates, and any new or retired codes. Missing updates can produce systematic underpayment detection errors (the system uses the prior year's expected amount and under-flags legitimate current-year payments) or incorrect claim edits.
Industry benchmark
CMS MPFS Final Rule annually. CMS Physician Fee Schedule Look-Up Tool (publicly accessible). Industry reference: MGMA DataDive, Medscape/WebMD physician compensation surveys.
Worked example
A 14-physician family medicine group bills Medicare Part B under MPFS. Annual Medicare Part B gross charges: $4.2M. Medicare allowed amount (at full MPFS): $2.85M. After MIPS adjustment at +2.5% (well-performing group), Medicare paid amount: $2.92M. Patient responsibility (co-insurance, deductible): $580K. Net Medicare collected: $2.34M after sequestration and patient-share collection.
Frequently asked questions — Medicare Physician Fee Schedule (MPFS)
When is the MPFS updated?
Annually. Proposed Rule published each July; Final Rule published late October or early November; effective January 1 of the following year. Mid-year corrections via Change Requests occasionally occur. Congressional overrides of MPFS provisions happen most commonly in December omnibus legislation.
Does MPFS apply outside Medicare?
Not directly, but MPFS is the reference fee schedule most commercial payer contracts use to express rates (e.g., '115% of Medicare'). Medicaid programs use their own state-specific fee schedules, often calibrated near or below MPFS. MPFS influence extends well beyond Medicare through commercial contract referencing.
How do I find my MPFS payment for a specific code?
The CMS Physician Fee Schedule Look-Up Tool (fcso.com, Noridian, and CMS-published addenda) provides code-by-code MPFS amounts with locality adjustments. Many practice management systems integrate current MPFS data for real-time expected-payment calculation.
What happens to MPFS payments when MIPS adjustment applies?
MIPS adjustments apply as a percentage modifier on top of MPFS-calculated payment. A clinician with a +5% MIPS adjustment receives MPFS base payment × 1.05 for each service. MIPS performance-year data leads the payment-year by two years; 2024 performance affects 2026 payments.
Disclaimer
This glossary entry is operational reference for revenue-cycle and medical-billing professionals. It is not legal, clinical, or contractual advice. Industry benchmarks cite named public sources where available; always verify against the current guidance from the authority body before relying on a number in a contract, policy, or compliance filing.