Risk Adjustment Models & HCCs Flashcards

What is the difference between a 'payment HCC' and a 'non-payment HCC'?

Answer: Some HCCs have zero payment weight but serve structural purposes in hierarchy, participating in trumping without contributing directly to RAF

Non-payment HCCs can participate in trumping and disease interactions but have zero direct coefficient.

What analytical approach correctly models the V24 to V28 transition impact?

Answer: Calculate RAF under both models, apply CMS blending percentages, and account for normalization changes

Accurate analysis requires dual-model calculation, CMS blending percentages, and normalization factor changes.

Why does the CMS-HCC model exclude common conditions like hypertension from HCC mapping?

Answer: Common conditions that are easily diagnosed, have limited incremental cost predictiveness, or are susceptible to discretionary coding are excluded

Including such conditions would increase payments without improving cost prediction accuracy.

Two patients have identical HCC profiles but very different RAF scores. What factors could explain this?

Answer: Demographic factors create different baseline scores that combine with HCC weights

Age, sex, dual-eligible status, disability status, and institutional status all create different baseline scores.

What is the Rx-HCC model, and how does it relate to CMS-HCC?

Answer: Rx-HCC is a separate model for Part D prescription drug payment, with its own HCC categories calibrated for drug costs

RxHCC uses the same diagnosis codes but maps them to categories predicting prescription drug costs rather than medical costs.

In risk adjustment modeling, what does 'calibration' mean and why is it updated?

Answer: The statistical process of estimating model coefficients using historical data, updated to reflect current cost patterns

Calibration estimates the relationship between diagnoses and costs. Healthcare changes require periodic recalibration.