Billing and insurance

ACO medical abbreviation

ACO means "accountable care organization".

Each meaning matched at least two public references (2 in all for ACO), checked October 23, 2026. The table lists them.

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What ACO means

Example

Sample contract type: "ACO."

A made-up line that shows the abbreviation in place. It is not about any patient and is not an instruction.

Related abbreviations

  • CMSCenters for Medicare & Medicaid Services
  • PCPprimary care physician; primary care provider
  • HMOhealth maintenance organization
  • ACAAffordable Care Act
  • CHIPChildren's Health Insurance Program
  • COBcoordination of benefits

Elsewhere on Rivvi

Questions

What does ACO mean in medical terms?

ACO means "accountable care organization".

Where is ACO used?

ACO shows up in billing and claims. Its category here is billing and insurance.

Is ACO on the Joint Commission Do Not Use list?

No. ACO is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.

Source: NLM SPECIALIST Lexicon abbreviations file (LRABR); Federal agency program pages (CMS, Medicare.gov, SSA, IRS, OIG, HHS, DOL, HRSA, FDA, CDC) and healthcare.gov glossary. Data as of October 23, 2026. Last updated October 23, 2026. How we source data. Spotted an error? Send a correction.

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