CCDS CDI and Quality Metrics 2 — Questions and Answers
Question 1: Which quality metric measures the rate of complications that could reasonably have been prevented through optimal care?
- Case Mix Index (CMI)
- Patient Safety Indicators (PSIs) (Correct answer)
- Average Length of Stay (ALOS)
- Geometric Mean Length of Stay (GMLOS)
Correct answer: Patient Safety Indicators (PSIs)
Patient Safety Indicators (PSIs) are AHRQ-developed metrics that flag potentially preventable complications and adverse events during hospitalization. CDI specialists monitor PSIs because incomplete documentation can cause avoidable PSI flags that negatively impact hospital quality scores.
Patient Safety Indicators were developed by AHRQ to identify potentially preventable complications during hospitalization. CDI specialists play a critical role in ensuring documentation accurately reflects whether conditions were present on admission or developed as true complications, directly impacting PSI rates.
Question 2: A CDI specialist notices the hospital's Case Mix Index (CMI) dropped after a coding software update. What is the MOST likely explanation?
- Increased patient volume lowered the average
- Higher-severity DRGs are being under-coded due to documentation gaps (Correct answer)
- The hospital admitted fewer complex patients
- CMI calculations changed under the new fiscal year
Correct answer: Higher-severity DRGs are being under-coded due to documentation gaps
A drop in CMI typically signals that high-severity DRGs are not being captured, often because documentation does not support the specificity needed to assign more resource-intensive DRGs.
Case Mix Index reflects the average DRG relative weight across all Medicare discharges and is a key indicator of documentation quality. When CMI drops unexpectedly, it usually means complex conditions are being under-documented or under-coded, resulting in assignment to lower-weighted DRGs.
Question 3: Which of the following is a Hospital-Acquired Condition (HAC) that directly affects Medicare payment if not documented as present on admission?
- Hypertension
- Catheter-associated urinary tract infection (CAUTI) (Correct answer)
- Type 2 diabetes
- Chronic obstructive pulmonary disease (COPD)
Correct answer: Catheter-associated urinary tract infection (CAUTI)
CAUTI is one of the CMS-designated Hospital-Acquired Conditions. If a urinary tract infection develops after admission and is not documented as present on admission, Medicare will not reimburse the additional cost of treating that complication.
Hospital-Acquired Conditions are conditions that CMS has designated as reasonably preventable. When an HAC is not documented as present on admission, Medicare will not pay the higher DRG rate that would apply if the condition had been present.
Question 4: When calculating the Observed-to-Expected (O/E) mortality ratio, a ratio greater than 1.0 indicates:
- The hospital's mortality is better than expected
- The hospital's mortality is worse than expected (Correct answer)
- Documentation is complete and accurate
- The hospital has a higher CMI than the national average
Correct answer: The hospital's mortality is worse than expected
An O/E ratio above 1.0 means the hospital's actual observed mortality exceeded the risk-adjusted expected mortality, suggesting potential quality concerns.
The Observed-to-Expected mortality ratio compares a hospital's actual death rate to what would be predicted given its patient population's documented severity of illness. A ratio greater than 1.0 indicates worse-than-expected outcomes, which may reflect true quality issues or documentation deficiencies that understate severity.
Question 5: Under the Hospital Readmissions Reduction Program (HRRP), readmissions within how many days of discharge are tracked?
- 7 days
- 14 days
- 30 days (Correct answer)
- 60 days
Correct answer: 30 days
CMS tracks 30-day readmissions under the HRRP. Hospitals with excess 30-day readmissions for conditions like heart failure, pneumonia, and hip/knee replacement face payment penalties.
The HRRP penalizes hospitals with higher-than-expected 30-day readmission rates for selected conditions including heart failure, acute myocardial infarction, pneumonia, COPD, hip/knee arthroplasty, and CABG.
Question 6: Which UHDDS data element is used to define the principal diagnosis?
- The diagnosis that generates the highest reimbursement
- The condition established after study to be chiefly responsible for the admission (Correct answer)
- The first diagnosis listed in the physician's H&P
- The diagnosis with the highest ICD-10-CM code specificity
Correct answer: The condition established after study to be chiefly responsible for the admission
The UHDDS defines the principal diagnosis as the condition established after study to be chiefly responsible for occasioning the patient's admission.
The UHDDS definition of principal diagnosis is the foundation of inpatient coding. CDI specialists ensure that the documented and coded principal diagnosis aligns with this standard, which directly determines the MS-DRG assigned.
CCDS CDI and Quality Metrics 2
Which quality metric measures the rate of complications that could reasonably have been prevented through optimal care?