30-day readmission

Definition

A 30-day readmission is an unplanned hospital admission occurring within 30 days of a prior inpatient discharge \u2014 a key clinical quality and financial metric tracked by CMS under the Hospital Readmissions Reduction Program (HRRP). The 30-day window begins on the day of discharge; readmission to the same hospital or any other acute-care hospital counts toward the measure.

Planned readmissions \u2014 such as scheduled chemotherapy or elective procedures \u2014 are excluded from HRRP measures. The national Medicare fee-for-service all-cause 30-day readmission rate is approximately 15%, though condition-specific rates vary widely; heart failure alone carries a readmission rate of roughly 22%, making it a primary HRRP target.

Regulatory basis

The Hospital Readmissions Reduction Program (HRRP) was established by the Affordable Care Act (2010) and implemented beginning in fiscal year 2013. CMS assesses hospitals against an excess readmission ratio \u2014 comparing actual to expected readmission rates \u2014 across six target conditions: acute myocardial infarction (AMI), heart failure (HF), pneumonia (PN), chronic obstructive pulmonary disease (COPD), coronary artery bypass graft surgery (CABG), and elective total hip arthroplasty and total knee arthroplasty (THA/TKA).

Hospitals with excess readmissions face payment reductions on all Medicare inpatient discharges, up to a maximum of 3% of base DRG payments. Full program details are available from the Hospital Readmissions Reduction Program page on CMS.gov.

Who uses it and when it applies

• Hospital quality and financial leadership tracking HRRP penalty exposure (up to 3% of Medicare DRG payments)
• Clinical leadership measuring post-discharge outcomes across service lines
• Care transition teams evaluating TCM, RPM, and CCM programs for readmission reduction effectiveness
• Regulators and payers \u2014 CMS under HRRP, and commercial insurers adopting similar readmission measures in value-based contracts

Related terms

• Transitional Care Management (TCM) \u2014 the CMS-reimbursed framework for 30-day readmission reduction
• CPT 99495 \u2014 the moderate-complexity TCM billing code
• Care coordination \u2014 the broader function that spans the 30-day window

How Positive Check relates

Positive Check\u2019s automated post-discharge wellness calls target the 30-day window \u2014 especially the highest-risk first 7 days. See the Post-Discharge Follow-Up solution or the 30-day readmission reduction guide for strategy and evidence.