aco
acoDefinition
ISO-11179 Definition
Accountable Care Organization — a group of doctors, hospitals, and other healthcare providers who voluntarily coordinate to deliver high-quality care to Medicare and commercial insurance patients while reducing unnecessary costs. ACOs accept shared financial accountability for the total cost and quality of care for an attributed patient population, earning shared savings when they deliver care below a risk-adjusted expenditure benchmark while meeting quality performance thresholds. CMS established the Medicare Shared Savings Program as the primary ACO vehicle under the Affordable Care Act, and hundreds of ACOs now serve millions of Medicare beneficiaries.
Successful ACOs invest in care coordination infrastructure, data analytics, care management programs, and physician engagement to change care delivery patterns across the continuum. Healthcare data teams build ACO performance analytics platforms that calculate attributed beneficiary total cost of care, measure quality performance across MSSP measure domains, track in-year performance against benchmark expenditure targets, and project shared savings distributions to support provider financial planning and care management investment decisions.
Standard Abbreviation
aco
Category
Production DDL — FACT_QUALITY_MEASURE
CREATE OR REPLACE TABLE FACT_QUALITY_MEASURE (
qlty_key INTEGER NOT NULL -- surrogate key,
mbr_key INTEGER NOT NULL -- FK to DIM_MEMBER,
plan_key INTEGER NOT NULL -- FK to DIM_PLAN,
meas_yr SMALLINT -- measurement year,
hedis_meas_cd VARCHAR(20) -- HEDIS measure code,
denom_ind CHAR(1) -- denominator eligible,
numer_ind CHAR(1) -- numerator met,
excl_ind CHAR(1) -- exclusion indicator,
gap_open_ind CHAR(1) -- care gap open,
star_rtg_nbr DECIMAL(3,1) -- star rating,
qlty_scr DECIMAL(5,2) -- quality score,
perf_thrsh_pct DECIMAL(5,2) -- performance threshold,
raf_scr DECIMAL(10,3) -- risk adjustment factor,
outreach_cnt SMALLINT -- outreach attempts,
load_dt TIMESTAMP_NTZ NOT NULL -- load timestamp
);
Standard Snowflake DDL for the canonical quality table. Convert to BigQuery or Databricks →
Why This Term Matters
Quality measure data determines how payers and providers are rated and reimbursed under CMS Stars, HEDIS, and value-based care contracts. Data engineers who understand quality terminology build measure calculation pipelines that correctly attribute patients, apply denominator exclusions, and flag documentation gaps before submission deadlines. Incorrect quality data directly affects star ratings, pay-for-performance bonuses, and Medicare Advantage plan bids.
Related Content
Related Definitions
Looking for more healthcare terms?
Browse our complete library of 100,000+ standardized healthcare data terms
Browse All Terms