CMS V28 Risk Adjustment Model Fully Phased In 2026 — FQHCs in MA/ACO Contracts Face 10-20% Revenue Cliff Without Coding Upgrade
CMS's V28 risk adjustment model is fully phased in for 2026 — removing approximately 2,000 ICD-10 codes from HCC mapping. FQHCs participating in Medicare Advantage, ACO REACH, or APM contracts (including the new CA APM that went live January 2026) face 10-20% revenue decline if clinical documentation hasn't been retrained for V28-compliant coding.
Audit risk if V24 codes still in active use. Compounds with the CA APM January 2026 go-live for global payments.
Strategic implication: FQHCs running ECM, complex care management, or chronic disease populations need immediate V28 coding readiness assessment.
Most FQHCs underperform on HCC capture vs. peer hospitals — the V28 transition widens that gap.
Key takeaways
- ~2,000 ICD-10 codes removed from HCC mapping
- 10-20% revenue decline risk for MA/ACO/APM FQHCs
- Compounds with CA APM January 2026 go-live
- Immediate V28 coding readiness assessment recommended
Primary source
CPA Medical BillingSource packet
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FQHC Talent. (2026, April 15). CMS V28 Risk Adjustment Model Fully Phased In 2026 — FQHCs in MA/ACO Contracts Face 10-20% Revenue Cliff Without Coding Upgrade. Primary source: CPA Medical Billing. Retrieved July 30, 2026, from https://www.fqhctalent.com/intel/cms-v28-risk-adjustment-documentation-cliff-2026
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