#riskadjustment

How a Medicare Advantage plan turns scattered clinical signals into a ranked, evidence-backed worklist.

HCC gap analysis is really a set-difference problem. Start with the conditions a member is suspected to have (pulled from prior-year diagnoses, medications, and labs), subtract the ones already documented this year, and what's left is the gap. Rank that gap by Risk Adjustment Factor impact under CMS-HCC V28, and a plan has a prioritized list of where accurate, current-year documentation is missing.

This funnel walks through the four stages: Suspected HCCs → Documented HCCs → The Gap → Closed With Evidence. The side bar shows illustrative RAF deltas for the top-ranked gaps, so the highest-impact items sit at the top of the worklist.

Every figure here is synthetic. The point is the method, not the numbers.

For the full methodology behind ranking and closing these gaps, see VBC Risk Analytics on RAF scoring and the companion HCC gap analysis guide.

VBC Risk Analytics. Educational only — not coding, billing, or clinical advice; verify against the current CMS Rate Announcement. Synthetic data only.

Same documented member, two models.

When CMS moved from the HCC V24 model to V28, the documentation didn't change — but the way it scores did. This illustrative infographic walks through how one hypothetical member's RAF can land differently under each version: categories get renumbered, coefficients get re-estimated, some conditions are no longer payable, and a transition blend weights the two scores together.

The numbers here are invented for teaching. The point isn't the specific values, it's the shape of what changes between versions.

The bigger takeaway sits in the footer: accuracy over intensity. V28 changes which accurate documentation pays, and how much — not the standard that the score has to reflect the real, documented patient.

Side-by-side and a worked example in the full HCC V28 guide.

New to the basics? Start with what a RAF score is.

Created by VBC Risk Analytics (we build the RAF Score Calculator).

Illustrative figures, not real CMS data. Educational only — not coding, billing, or clinical advice. Verify against the current CMS Rate Announcement.

Stat that reframes the whole conversation:

In most Medicare Advantage populations, a small slice of members drives a hugely disproportionate share of cost. Risk stratification is how you find that slice before the costs land — sorting members by acuity so care management goes where it actually moves the needle.

The data backbone for that sorting is the same machinery behind funding accuracy: HCCs, RAF, CMS-HCC V28. Stratification just points it forward instead of backward.

Want to see it in practice? This medicare advantage risk adjustment case study walks through how a plan turned risk data into a prioritized outreach list (synthetic figures, real workflow).

Full data guide here → Medicare Advantage Risk Stratification

TL;DR — a RAF score tells you the past. Stratification tells you who to call tomorrow.

VBC Risk Analytics. Educational only — not coding, billing, or clinical advice; verify against the current CMS Rate Announcement. Synthetic data only.

Underrated truth in risk adjustment:

A good clinical documentation improvement program isn't a cost center — it's one of the few functions that touches revenue, quality scores, AND audit defense at the same time. The problem is nobody department ever sees the whole return, so it gets undervalued in budget season.

The fix is boring but powerful: build a baseline, attribute RAF lift only where the clinical evidence supports it, then add the denials and RADV findings you avoided. Count it the same way you'd defend it.

Illustrative math (synthetic): document a few hundred previously-missed-but-supported conditions in a year and the conservative per-member revenue impact tends to clear program cost several times over — while strengthening your audit posture instead of weakening it.

Rule of thumb: if you can't show the evidence, don't count the dollars.

Full measurement playbook → CDI Program ROI.

VBC Risk Analytics. Educational only — not coding, billing, or clinical advice; verify against the current CMS Rate Announcement. Synthetic data only.