What Is MIPS in Healthcare? A Complete Guide to MIPS Reporting and Medical Billing

Medicare reimbursements are no longer determined by volume alone. Since January 1, 2017, the Merit-based Incentive Payment System (MIPS) has required eligible clinicians to report performance data across 4 categories, and their scores directly adjust what Medicare pays them. For healthcare providers, practice managers, and medical billing professionals, understanding MIPS is not optional. A single performance year of poor reporting can trigger a payment penalty of up to 9% on all Medicare Part B claims the following year.

This guide explains what MIPS is in healthcare, breaks down its 4 performance categories, clarifies how MIPS scores affect medical billing and reimbursements, and provides actionable steps to improve your MIPS score while avoiding costly reporting errors.

What Is MIPS in Healthcare?

MIPS stands for the Merit-based Incentive Payment System, a value-based reimbursement program administered by the Centers for Medicare & Medicaid Services (CMS). It scores eligible clinicians on a 100-point scale across 4 performance categories and applies the resulting score as a positive, neutral, or negative payment adjustment to their Medicare Part B reimbursements.

MIPS is one of 2 tracks within the Quality Payment Program (QPP). The other track is Advanced Alternative Payment Models (APMs). Clinicians who do not qualify for an Advanced APM are evaluated under MIPS by default.

The Origin of MIPS, MACRA, and Value-Based Care

MIPS was established by the Medicare Access and CHIP Reauthorization Act of 2015 (MACRA) and came into effect on January 1, 2017. According to the American Medical Association (AMA), MACRA replaced 3 existing Medicare quality programs, the Physician Quality Reporting System (PQRS), the Value-Based Modifier (VBM), and the Meaningful Use (MU) program, consolidating them into one unified, points-based framework.

The shift from the Sustainable Growth Rate (SGR) formula to MACRA was designed to move Medicare away from fee-for-service payments toward value-based care. Under the SGR, physicians faced the threat of double-digit annual payment cuts. MACRA capped the maximum penalty at 9%, providing greater payment stability while incentivizing quality performance.

Who Does MIPS Apply To?

MIPS applies to eligible clinicians who bill Medicare Part B above the low-volume threshold, which CMS defines as billing more than $90,000 in Medicare Part B allowed charges, seeing more than 200 Medicare patients, and providing more than 200 covered professional services per year. Clinicians who fall below any one of these thresholds are exempt from mandatory MIPS participation.

Eligible clinician types who may be required to participate in MIPS include:

•     Physicians (MDs and DOs)
•     Physician assistants (PAs)
•     Nurse practitioners (NPs)
•     Clinical nurse specialists (CNSs)
•     Certified registered nurse anesthetists (CRNAs)
•     Physical therapists, occupational therapists, and speech-language pathologists
•     Clinical psychologists and registered dietitians

Clinicians who participate in Advanced APMs may be exempt from MIPS requirements, as CMS recognizes their participation in an alternative value-based care structure.

The 4 Performance Categories of MIPS

MIPS scores eligible clinicians across 4 performance categories, each carrying a specific weight toward the 100-point composite score. Per CMS, the category weights for the 2024 performance year are:

Quality

The Quality category accounts for 30% of the total MIPS score and measures the clinical care a provider delivers to patients. According to CMS, clinicians must report a minimum of 6 quality measures, including at least 1 outcome measure. If no outcome measure is applicable to a specialty, a high-priority measure, such as one addressing patient safety, appropriate use, care coordination, patient experience, or efficiency, must be reported instead.

CMS requires that reported Quality measures meet a 75% data completeness threshold for the 2024 and 2025 performance years, meaning measures must be reported on at least 75% of all eligible patient encounters across the full calendar year. There are 198 Quality measures available for the 2024 performance period, covering specialties including cardiology, oncology, orthopedics, primary care, and more.

Promoting Interoperability

Promoting Interoperability (PI) accounts for 25% of the MIPS score and measures a clinician’s use of Certified Electronic Health Record Technology (CEHRT) to support patient engagement and the secure exchange of health information.

Formerly known as Meaningful Use (MU), this category requires clinicians to collect and report EHR data for a minimum of 180 continuous days during the calendar year. Key measures under PI include electronic prescribing, health information exchange, patient access to their health records, and public health reporting. Clinicians must use CEHRT that meets the 2015 Edition Base EHR definition set by the Office of the National Coordinator for Health Information Technology (ONC).

Improvement Activities

The Improvement Activities (IA) category accounts for 15% of the MIPS score and recognizes clinicians for participating in care delivery activities that improve clinical practice. Activities span care coordination, beneficiary engagement, patient safety, and population management.

CMS designates each improvement activity as either medium-weight or high-weight. Clinicians must earn 40 total points to achieve full credit in this category. A single high-weight activity, such as participation in a Systematic Case Review, earns 20 points. Clinicians in small practices, rural areas, or Health Professional Shortage Areas (HPSAs) receive double credit for each activity, making it easier to reach the 40-point threshold.

Cost

The Cost category accounts for 30% of the MIPS score and evaluates the total cost of care attributed to a clinician based on Medicare claims data. Clinicians are not required to submit any data for this category; CMS calculates cost performance directly from existing Medicare Part B and Part A claims.

CMS uses 2 primary cost measures: the Medicare Spending Per Beneficiary, Clinician (MSPB-C) measure and the Total Per Capita Cost (TPCC) measure for all attributed beneficiaries. Additional episode-based cost measures apply to clinicians treating specific procedural or chronic conditions. Each measure is scored on a scale of 1 to 10, and the resulting scores contribute proportionally to the final MIPS composite score.

How MIPS Impacts Medical Billing and Reimbursements

MIPS directly controls the amount Medicare reimburses for every covered professional service a clinician provides. The connection between MIPS performance and medical billing runs on a 2-year lag; performance in year one determines payment adjustments 2 years later.

Understanding MIPS Payment Adjustments

MIPS payment adjustments are applied as a percentage modifier to all Medicare Part B fee-for-service payments on a claim-by-claim basis. Per CMS, the maximum payment adjustment for the 2026 payment year, based on 2024 performance, is +/– 9%.

The 2024 performance threshold is set at 75 points. Clinicians who score exactly 75 receive a neutral (0%) adjustment. Those above 75 receive a positive adjustment scaled proportionally up to the maximum bonus. Those below 75 receive a negative adjustment, with the maximum penalty of –9% applied to clinicians who score at or below 18.75 points (one-quarter of the performance threshold). Clinicians who do not report MIPS at all receive the full –9% penalty.

MIPS is a budget-neutral program by law. This means CMS scales positive payment adjustments up or down using a multiplier, called a scaling factor, to ensure that aggregate bonuses paid out do not exceed aggregate penalties collected. According to CMS, for a clinician with approximately $130,000 in annual Medicare income, achieving a perfect score of 100 in 2025 is estimated to yield a bonus of approximately $6,100.

Why Medical Billers and Practice Managers Must Understand MIPS

Medical billing teams are directly affected by MIPS because payment adjustments are applied at the claim level. Every Medicare Part B claim processed during a payment year reflects the clinician’s prior-year MIPS score. A –9% adjustment on a high-volume Medicare practice translates to a significant annual revenue reduction.

Practice managers need to coordinate with clinical staff to ensure quality measures are documented accurately in the EHR, that Promoting Interoperability requirements are met, and that cost data attributed by CMS reflects accurate claims submissions. Incorrect coding, incomplete documentation, and missed MIPS deadlines all reduce composite scores and, by extension, reimbursement rates.

Practices that partner with a specialized medical billing service or MIPS consultant can reduce reporting errors, monitor real-time performance against the 75-point threshold, and implement corrective documentation strategies before the performance year closes.

How to Improve Your MIPS Score and Avoid Common Mistakes

Improving a MIPS composite score requires a structured approach to documentation, reporting, and category selection. The following strategies reduce penalty risk and increase the probability of a positive Medicare payment adjustment.

Tips to Maximize Your MIPS Score

Apply these 6 strategies to increase your MIPS composite score:

•     Select quality measures that are not topped out. Topped-out measures are those where national performance rates are so high that further improvement earns no additional credit. Selecting non-topped-out measures offers more room to score above the benchmark.
•     Report on all eligible patient encounters. CMS requires a 75% data completeness threshold for the 2024 performance year. Reporting on 100% of eligible encounters maximizes the available denominator and improves benchmark comparison scores.
•     Complete the Promoting Interoperability category in full. Failure to report PI results in automatic reweighting of the category to 0%, which redistributes its 25% weight to Quality and Cost. This can lower overall performance if quality scores are already at or near the threshold.
•     Attest to high-weight Improvement Activities. Two high-weight activities achieve the full 40-point IA requirement. Practices in small practice, rural, or HPSA designations earn double points per activity, reaching the threshold with just 1 high-weight activity.
•     Monitor cost measure attribution quarterly. CMS calculates the Cost category using claims data. Review Medicare claims coding throughout the year for accuracy in procedure codes and diagnosis linkages, as these directly affect cost measure attribution.
•     Submit MIPS data before the annual deadline. CMS releases annual submission deadlines through the Quality Payment Program (QPP) portal. Missing the deadline results in the maximum 9% payment penalty with no recourse.

Common MIPS Reporting Mistakes to Avoid

These 4 MIPS reporting errors are among the most common causes of avoidable payment penalties:

•     Missing the annual data submission deadline. CMS does not grant extensions for standard MIPS submissions. Practices that miss the deadline receive the full –9% payment adjustment in the corresponding payment year.
•     Failing to meet data completeness thresholds. Reporting a quality measure on fewer than 75% of eligible patient encounters results in a score of 0 for that measure. This significantly reduces the Quality category score and the composite MIPS total.
•     Ignoring the Cost category. Because CMS calculates Cost automatically from claims data, many practices do not review their attributed cost measures. Inaccurate claims coding inflates cost measure scores and reduces the final MIPS composite.
•     Selecting the wrong reporting method. MIPS data can be submitted via claims, qualified registry, Qualified Clinical Data Registry (QCDR), EHR, or the CMS Web Interface (for groups of 25 or more). Submitting via a method that does not capture the full patient population reduces reportable denominators and data completeness rates.

Conclusion

MIPS in healthcare is a CMS-mandated performance measurement and payment adjustment system that has reshaped how Medicare reimburses eligible clinicians. Its 4 performance categories, Quality, Promoting Interoperability, Improvement Activities, and Cost, each feed into a 100-point composite score that determines whether a practice receives a positive, neutral, or negative adjustment to its Medicare Part B payments. The maximum adjustment is +/– 9%, a figure that translates into a significant revenue impact for high-volume Medicare practices.

For medical billing teams and practice managers, MIPS is not a back-office compliance checkbox; it is a direct driver of reimbursement rates. Practices that document accurately, select the right quality measures, meet data completeness requirements, and submit on time are best positioned to achieve a positive adjustment each year. Working with an experienced medical billing partner or MIPS consultant ensures that performance data is captured, submitted, and optimized before the performance year closes.

Partner with a certified medical billing specialist to manage your MIPS reporting, protect your Medicare reimbursements, and eliminate penalty risk

FAQs

Q1: What is the MIPS performance threshold for 2024? 

The 2024 MIPS performance threshold is 75 points. Clinicians who score above 75 receive a positive payment adjustment, those who score exactly 75 receive a neutral adjustment, and those who score below 75 receive a negative adjustment of up to –9% on Medicare Part B claims.

Q2: What happens if you don’t report MIPS? 

Clinicians who do not submit MIPS data receive the maximum payment penalty of –9% applied to all Medicare Part B fee-for-service claims in the corresponding payment year.

Q3: Is MIPS reporting required for all Medicare providers? 

MIPS reporting is required for eligible clinicians who bill more than $90,000 in Medicare Part B allowed charges, treat more than 200 Medicare patients, and provide more than 200 covered professional services per year. Clinicians who fall below any one of these thresholds are exempt.

Q4: How does MIPS affect medical billing? 

MIPS scores are applied as a percentage modifier to every Medicare Part B claim a clinician submits. A low MIPS score reduces reimbursement on each claim processed during the payment year, making accurate documentation and timely reporting a direct medical billing priority.