Measure ID: MIPS 355|Surgery|2026 Performance Year

Unplanned Reoperation within the 30-Day Postoperative Period

Percentage of patients aged 18 years and older who had any unplanned reoperation within the 30-day postoperative period.

Outcome – High PrioritySurgeryPatient Safety

Last updated: January 15, 2026

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Measure Specification

Denominator (Eligible Population)

All patients aged 18 years and older
ANDPatient procedure during the performance period
ORPerformance Met: Unplanned return to the operating room for a surgical procedure, for complications of the principal operative procedure, within 30 days of the principal operative procedure (G9308)

Denominator Exclusions

None

Numerator

Unplanned return to the operating room for a surgical procedure, for any reason, within 30 days of the principal operative procedure.

Submission Codes (QDCs)

✓ Performance Met
G9308Unplanned return to the operating room for a surgical procedure, for complications of the principal operative procedure, within 30 days of the principal operative procedure
✗ Performance Not Met
G9307No return to the operating room for a surgical procedure, for complications of the principal operative procedure, within 30 days of the principal operative procedure

Denominator Exceptions

None — this measure has no denominator exceptions.

🧮MIPS Score Simulator

Estimate only — actual CMS scoring may vary based on reporting method, data completeness, and annual rule updates.

%Benchmarks vary by collection type
💡 Tip: Enter your performance rate to compare MIPS points across all collection types. The same rate can score differently depending on how you submit.
VBCA Insights

💡Why This Measure Matters

An unplanned return to the operating room within 30 days signals something went wrong: bleeding, infection, dehiscence, or a complication the first surgery didn't address. This measure flags these returns and is an inverse measure—lower is better. Every reoperation means more risk to the patient, more cost, and more recovery time. Analyze why reoperations happen: could better intraoperative technique, patient selection, or postoperative monitoring prevent them? This drives quality improvement.

📖Clinical Rationale

This is an adverse surgical outcome, which is often a preventable cause of harm, thus it is important to measure and report. It is feasible to collect the data and produces reliable and valid results about the quality of care. It is useful and understandable to stakeholders. As highlighted earlier, this measure was developed in a collaborative effort by the American College of Surgeons and the American Board of Surgery.

This measure addresses the National Quality Strategy Priorities, and was identified by an expert panel of physician providers to be a critical outcome for this procedure. This measure addresses a high-impact condition as it is one of the procedures most commonly performed in a facility setting. The measure aligns well with the intended use. The care settings include Acute Care Facilities/Hospitals.

Data are being collected in a clinical registry that has been in existence for over 10 years, with over 5500 current, active users. Thus, we are requesting consideration of this measure in the MIPS CQM reporting option. The level of analysis is the clinician/individual. All populations are included, except children. The measure allows measurement across the person-centered episode of care out to 30 days after the procedure whether an inpatient, outpatient, or readmitted.

The measure addresses disparities in care. The risk adjustment is performed with a parsimonious dataset and aims to allow efficient data collection resources and data reporting. Measures have been harmonized when possible.

📝Clinical Recommendations

A modified-Delphi methodology using an expert panel of surgeons who are Directors of the American Board of Surgery identified this to be a critical outcome for this surgical procedure (Surgeon Specific Registry Report on Project for ABS MOC Part IV. Unpublished study by the American College of Surgeons in conjunction with the American Board of Surgery, 2011).

📋Implementation Notes

This measure contains one strata defined by a single submission criteria. This measure produces a single performance rate. For the purposes of MIPS implementation, this procedure measure is submitted each time a procedure is performed during the performance period. There is no diagnosis associated with this measure. Include only patients that have procedures through November 30th of the performance period.

This will allow the evaluation of at least 30 days after the procedure within the performance period. This is an inverse measure which means a lower calculated performance rate for this measure indicates better clinical care or control. The “Performance Not Met” numerator option for this measure is the representation of the better clinical quality or control.

Submitting that numerator option will produce a performance rate that trends closer to 0%, as quality increases. For inverse measures, a rate of 100% means all of the denominator eligible patients did not receive the appropriate care or were not in proper control.

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