3M™ Potentially Preventable Readmissions (PPR) Grouping Software find opportunities for better discharge planning, care coordination and follow up.
The 3M Potentially Preventable Readmissions (PPR) methodology identifies inpatient readmissions that could have potentially been preventable according to clinically precise criteria. The software determines whether a readmission is clinically related to a prior admission based on the patient’s diagnosis and procedure codes associated with the prior admission and the reason for readmission.
A potentially preventable readmission (PPR) is a readmission within a specified time interval that is determined to be clinically related to a previous admission and potentially preventable. Similarly, a potentially preventable revisit to the emergency department (PPR ED) is an ED visit within a specified time window that is determined to be clinically related to an initial hospital admission and potentially preventable.
3M PPRs are most often used by payers, government agencies, hospitals, hospital systems and researchers. Users typically conduct analyses of multi-hospital data sets to compare performance on a risk-adjusted basis and identify opportunities for improvement. The same is expected of the recently released PPR ED methodology.
Here are a few examples of the value the PPR and PPR ED methodologies can bring to customers.
3M PPR and PPR ED grouping logic is the same for every user, although different organizations may use different versions. (The most recent version is recommended.) Each user makes its own decisions about appropriate uses. At this time, Solventum does not offer software that replicates PPR and PPR ED reimbursement analysis used by specific payers.
3M PPRs and PPR EDs are integrated with the other Solventum patient classification methodologies:
3M PPRs and PPR EDs are identified from claims grouped using the 3M™ All Patient Refined Diagnosis Related Groups (APR DRG) methodology. 3M APR DRGs are also used to risk adjust PPR and PPR ED rates across hospitals or other inpatient populations.
3M PPRs, including PPR EDs, are one of the five 3M™ Potentially Preventable Event methodologies.
The others are:
3M PPVs are a population-based outcome measure that identifies ED visits that could potentially have been prevented with better care in the community. Unlike PPR EDs, 3M PPVs are not tied to a previous inpatient stay.
3M PPRs and PPR EDs are available in the following Solventum products:
Available to licensees on the Solventum customer support website (covering both PPRs and PPR EDs):
Solventum experts are available to advise hospitals, health plans, government agencies, and other interested parties on how to obtain maximum value from the use of 3M PPRs and PPR EDs. For example, Solventum consultants can help hospitals measure the incidence of potentially preventable readmissions and ED revisits, compare against benchmarks and help design programs for improvement. Solventum consultants can also help payers and other organizations measure 3M PPRs and PPR EDs across hospitals, design pay-for-outcomes incentive programs and facilitate learning collaboratives to improve care.
Data requirements depend on whether the analysis is limited to inpatient readmissions or also includes revisits to the emergency department in which the patient is treated and released. A 3M PPR analysis can be done without ED data, but a PPR ED analysis requires both inpatient and ED data. In either case, all required data can be obtained from standard hospital claims, such as the UB-04 form or the X12N 837I electronic transaction. (The methodology is not designed to accept data from professional claims, such as may be submitted by urgent care clinics.) Individual records must be linked using consistent identifiers for both the patient and the hospital.
Each inpatient stay is first assigned to a 3M™ All Patient Refined Diagnosis Related Group (APR DRG). Data fields that are particularly important include admission and discharge dates, discharge status, birth date, gender, diagnosis codes with present on admission (POA) indicators, and ICD-10-PCS procedure codes. Because there are several reasons why a patient may have more than one inpatient claim within a short timeframe, we recommend that the user evaluate the reliability of the discharge status data provided by hospitals (e.g., transfers, left against medical advice, still a patient).
When the analysis also includes revisits to the emergency department, ED claims are also required. For PPR ED development, emergency department claims were defined by the combination of bill type 13X and revenue code 45X or 981. Users are responsible for selecting criteria appropriate to their own analysis. PPR ED analysis also requires the diagnosis codes that are routinely reported on outpatient hospital claims but does not require line-level detail such as procedure or revenue codes.
The challenge in readmission policy has always been to differentiate readmissions that were potentially avoidable from those that were not. In the early 2000s, Solventum developed the 3M™ Potentially Preventable Readmissions (PPR) methodology. In 2007, the Medicare Payment Advisory Commission used the Solventum methodology to report that 13.3 percent of Medicare inpatients had a PPR within 30 days, costing the Medicare program $12 billion in 2005. In 2008, Solventum researchers published the PPR methodology in the Health Care Financing Review. This article has been cited 250 times as the 3M PPR methodology has spread across the U.S.
As with the other 3M™ Potentially Preventable Event methodologies, three core concepts are essential:
The 3M PPR methodology starts by assigning every inpatient stay to a 3M™ All Patient Refined Diagnosis Related Group (APR DRG). The basic 3M PPR approach is to decide whether each combination of the initial admission 3M APR DRG and the readmission 3M APR DRG has a plausible clinical connection that indicates a potentially preventable readmission. That approach was supplemented by extensive clinical logic to add precision in identifying 3M PPRs.
Patient | Clinical Scenario (By APR DRG) | Potentially Preventable Readmission? | Comment |
1 | Admission 1: 139 Pneumonia Admission 2: 340 Fracture of Femur | No | Readmission not clinically related |
2 | Admission 1: 136 Resp. Malignancy Admission 2: 139 Pneumonia | No | Global exclusion 136 |
3 | Admission 1: 139 Pneumonia Discharge status 07: Left against medical advice Admission 2: 139 Pneumonia | No | Patient left against medical advice |
4 | Admission 1: 139 Pneumonia Discharge status 02: Transfer to another acute care hospital Admission 2: 194 Heart Failure | No | Transfers are not readmissions |
5 | Admission 2: 134 Peat Failure | Yes | Readmission possibly clinically related |
Note: All admissions are assumed to be within the designated window, e.g., 15 days or 30 days |
The 3M PPR methodology may be most easily understood by looking at the table above. For example, readmissions are not considered potentially preventable:
Patient 5 does have a potentially preventable readmission, because heart failure is a chronic condition that would have been present and managed in the initial admission. Results from the 3M PPR software can then be used to draw comparisons, taking into account differences in case mix across different populations. Case mix adjustment reflects not only the reason for the admission but also the severity of illness.
In 2019, Solventum enhanced the PPR method by adding PPR ED logic to identify returns to the emergency department that did not result in an inpatient readmission. Previously, there was no widely available methodology to track this useful quality measure of inpatient care and of follow-up care in the community. In parallel with the 3M PPR approach, the PPR ED logic distinguishes ED visits that were and were not clinically related to an initial inpatient stay within a specified window, such as 15 or 30 days. The PPR ED logic uses diagnosis information from the ED claim to assign the visit to a 3M APR DRG, which is compared with the 3M APR DRG for the initial admission. As with 3M PPRs, supplemental logic adds precision in identifying potentially preventable revisits to the ED.
The PPR and PPR ED software shows which specific inpatient stays and ED visits were considered potentially preventable, in each case with a defined reason for the assignment. These detailed data have proven very useful to clinicians and healthcare managers in taking action to improve outcomes. For example, a common finding is that the risk of a PPR peaks at two or three days after discharge.
Further information on the 3M PPR and PPR ED logic is shown in an online definition manual available to all licensed clients.
The 3M PPR and PPR ED clinical logic is maintained by a team of Solventum clinicians, data analysts, nosologists, programmers and economists. The methodology is updated annually to reflect changes in the standard diagnosis and procedure code sets as well as Solventum enhancements to the clinical logic.