ACO (Accountable Care Organization)

In the Medicare Shared Savings Program (MSSP), the largest permanent ACO program, an ACO's attributed beneficiaries are compared against a spending benchmark. If the ACO keeps total spending below the benchmark while meeting quality requirements, it shares in the savings; in higher-risk tracks it also shares losses. ACO REACH applies a similar logic with capitation-style payment and higher risk. The key point for home health operators: attributed patients remain traditional Medicare fee-for-service beneficiaries with full freedom of choice. The ACO cannot restrict where a patient goes; it can only influence the choice through recommendations, care coordination, and data.

Post-acute care is one of the largest and most variable spending categories an ACO can manage. Substituting home health for facility-based post-acute care where clinically appropriate saves thousands of dollars per episode, and preventing a single readmission saves more. So ACOs analyze which home health agencies serve their patients, what those agencies' hospitalization rates look like, and how quickly they start care. An agency that keeps ACO patients out of the hospital is directly generating shared savings for the ACO's physicians, which is a far stronger relationship glue than any marketing relationship.

ACOs choose partners on evidence. To compete, bring:

• Acute care hospitalization and ED use rates, ideally for the ACO's own attributed patients
• SOC timeliness performance and weekend admission capability
• Willingness to share real-time data, especially hospitalization alerts and SOC confirmations
• Care model specifics: front-loaded visits, medication reconciliation, physician follow-up coordination
• Stable geographic coverage across the ACO's service area

Expect a data-heavy vetting process and quarterly performance reviews. Agencies that cannot produce their own outcome data rarely make the list.

Working with an ACO adds obligations beyond ordinary referral relationships: notification when a shared patient is hospitalized or seen in the ED, participation in care coordination huddles, adherence to agreed care pathways for target conditions like heart failure and COPD, and regular reporting against agreed metrics. None of this changes how the agency bills Medicare; payment still flows through the normal home health benefit. What changes is accountability. The ACO watches outcomes patient by patient, and a bad quarter shows up in the next joint review, not in a vague reputation shift years later.