Accountable Care Organization (ACO)
Accountable Care Organization
A group of providers that takes accountability for the quality, cost, and overall care of a defined patient population.
1 min read · Last reviewed May 23, 2026
At a glance
- Category
- Compliance Program
- Acronym for
- Accountable Care Organization
- Primary sources
- 1
- Workspace handoff
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Where this comes up
Compliance committees and practice managers operate at this level — written policy, workforce training, sanction policy, monitoring and auditing cadence, response and corrective action. The seven elements of an effective compliance program (OIG) are the scaffolding; this term lives somewhere on that scaffold.
Full definition
What it is in practice
CMS Medicare Shared Savings Program (MSSP) and ACO REACH are the primary federal ACO structures. Commercial ACOs follow similar risk-sharing models.
How it shows up in your practice
ACO participation alters revenue mix (shared savings/losses) and operational priorities (network, quality, total cost of care).
Sources
- CMS — Quality Payment Programhttps://qpp.cms.gov/
Look up ACO model details in Ask D3
Open ask d3 →Related terms
- Compliance ProgramAdvanced APMAn Alternative Payment Model that meets QPP criteria (including downside risk) and qualifies participating clinicians for a 5% lump-sum incentive payment.
- Compliance ProgramValue-Based CareReimbursement models that pay providers based on quality and outcomes rather than fee-for-service volume.
- Compliance ProgramQuality Payment Program (QPP)CMS framework that combines MIPS and Advanced APMs to tie physician Medicare payments to quality and value.
- Compliance ProgramMIPSMerit-based Incentive Payment System — the QPP track combining quality, cost, improvement activities, and promoting interoperability into a single composite score that adjusts Medicare payment.
D3rx is a healthcare-billing and compliance research aid maintained by D3rx Inc. Articles are drafted by an LLM (Anthropic Claude) against primary HHS, OCR, CMS, eCFR, NIST, and state-regulator publications, and reviewed for restraint and source fidelity by the D3rx team.
Reviewer status: a named credentialed reviewer (CHC, CHPC, or healthcare attorney) is being engaged. Until that engagement is finalized, this page does not claim credentialed review.
Related across the archive
- GlossaryQuality Payment Program (QPP)CMS framework that combines MIPS and Advanced APMs to tie physician Medicare payments to quality and value.
- GlossaryValue-Based CareReimbursement models that pay providers based on quality and outcomes rather than fee-for-service volume.
- GlossaryAdvanced APMAn Alternative Payment Model that meets QPP criteria (including downside risk) and qualifies participating clinicians for a 5% lump-sum incentive payment.
- GlossaryMIPSMerit-based Incentive Payment System — the QPP track combining quality, cost, improvement activities, and promoting interoperability into a single composite score that adjusts Medicare payment.
- GlossaryReadmission Reduction Program (HRRP)CMS program that reduces payments to hospitals with excess 30-day readmissions for certain conditions.
- GlossaryRisk AdjustmentAdjustment of payment to plans or providers based on the health status and demographic characteristics of the enrollee population.
- BillingWhat to Do When a Payer Says You're UnderbillingGot a letter saying you're underbilling? Here's what it actually means, whether you should worry, and what action to take.
- ComplianceAmbulatory Surgery Center Compliance: CMS + State + Infection Control42 CFR Part 416 Conditions for Coverage, CMS State Operations Manual Appendix L, the ASC Infection Control Surveyor Worksheet, and where state ASC licensure tightens the standard.
This glossary entry is a research aid for billing and compliance staff. It does not provide legal, medical, or financial advice and does not replace counsel. References cited link to primary sources at HHS, OCR, CMS, eCFR, NIST, and the relevant payer or industry body.