teleo-codex/domains/health/cms-chart-review-exclusion-and-v28-model-are-complementary-reforms-targeting-coding-method-and-coding-breadth-simultaneously.md

type	domain	description	confidence	source	created
claim	health	V28 and 2027 chart review exclusion are complementary reforms targeting different mechanisms of MA upcoding	likely	Commonwealth Fund, How Risk Adjustment Affects Payment for Medicare Advantage Plans, 2026	2026-03-11

CMS chart review exclusion and V28 model are complementary reforms targeting coding method and coding breadth simultaneously

The combination of V28 implementation and the 2027 chart review exclusion represents the most significant structural reform to MA risk adjustment since the program's inception. These are not redundant policies—they target different dimensions of the upcoding problem.

V28 addresses coding breadth by reducing which diagnoses map to HCCs and how much they pay. The chart review exclusion addresses coding method by eliminating diagnoses captured through retrospective medical record review that aren't tied to actual clinical encounters.

Together, they create a pincer movement: V28 makes it harder to generate high risk scores from legitimate clinical encounters, while chart review exclusion eliminates the practice of mining old records for additional codes. The industry warns of benefit cuts and market exits if these reforms are combined with flat payment rates, suggesting the combined impact fundamentally changes MA economics.

The chart review exclusion alone is projected to save over $7 billion in 2027. Combined with V28's $7.6 billion annual savings, these reforms target $14+ billion in annual MA payments—approximately 3-4% of total MA spending.

Evidence

• Commonwealth Fund documents both reforms as targeting different mechanisms
• V28 targets diagnosis-to-HCC mappings (what gets coded)
• Chart review exclusion targets retrospective code capture (how it gets coded)
• Industry response suggests combined reforms change fundamental MA economics
• Combined savings exceed $14B annually
• CMS proposal specifies exclusion applies only to unlinked chart reviews, preserving codes from actual clinical encounters

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Relevant Notes:

• CMS 2027 chart review exclusion targets vertical integration profit arbitrage by removing upcoded diagnoses from MA risk scoring
• medicare-fiscal-pressure-forces-ma-reform-by-2030s-through-arithmetic-not-ideology

Topics:

• domains/health/_map