A (1) | C (9) | D (2) | E (7) | F (1) | H (7) | I (4) | K (1) | L (1) | M (6) | N (4) | O (1) | P (7) | Q (3) | R (3) | S (8) | T (1) | U (1) | V (3) | X (1)

Measure alignmentinfo-icon includes using the same quality measuresinfo-icon and value setsinfo-icon across settings and within multiple programs when possible. Alignment is achieved when a set of measures works well across settings or programs to produce meaningful information without creating extra work for those responsible for the measurement.

CDS - Clinical Decision Support

Health information technology functionality that builds upon the foundation of an electronic health record (EHRinfo-icon) to provide persons involved in care processes with general and person-specific information, intelligently filtered and organized, at appropriate times, to enhance health and health care.

CDS Developer

An individual or organization that translates knowledge to a structured and/or executable tool that aids in making evidence-informed decisions about a patient’s health care. CDS developersinfo-icon may or may not be the original knowledge authors (e.g., guideline developers, subject matter experts) or the final implementers. They are responsible for ensuring that the original clinical knowledge is reflected, accurately and consistently, in the appropriate standard coding schemes (such as CQLinfo-icon and including things like CPT and SNOMED, accounting appropriately for IP and licensing) e.g., hospital system, medical specialty society, federal CDSinfo-icon development contractor, or federal health agency.

Clinical Decision Support Developer

An individual or organization that translates knowledge to a structured and/or executable tool that aids in making evidence-informed decisions about a patient’s health care. CDS developersinfo-icon may or may not be the original knowledge authors (e.g., guideline developers, subject matter experts) or the final implementers. They are responsible for ensuring that the original clinical knowledge is reflected, accurately and consistently, in the appropriate standard coding schemes (such as CQLinfo-icon and including things like CPT and SNOMED, accounting appropriately for IP and licensing) e.g., hospital system, medical specialty society, federal CDSinfo-icon development contractor, or federal health agency.

Code system

code systeminfo-icon is a managed collection of concepts with each concept represented by at least one internally unique code and a human readable description, e.g., SNOMED CT.

Comment Period

A comment periodinfo-icon is the period of time the public has to respond to a request for public comment, such as a proposed rule, Request for Information, a new measure posted on the Measure Management System website, or some other document. The Administrative Procedure Act requires that federal agencies give the public an opportunity to participate in rulemaking.  Executive Orders 12866 and 13563 provide that a comment period generally should be no less than 60 days, but the length of the comment period varies if not part of the rulemaking process.

Composite performance measure

A combination of two or more component measures, each of which individually reflects quality of care, into a single performance measure, also called composite measure, with a single score.

Continuous variable

A measure scoreinfo-icon in which each individual value for the measure can fall anywhere along a continuous scale, and can be aggregated using a variety of methods such as the calculation of a mean or median (for example, mean number of minutes between presentation of chest pain to the time of administration of thrombolytics).

CQL - Clinical Quality Language

Clinical Quality Language (CQLinfo-icon) is an HL7info-icon standard for trial use (STUinfo-icon) and it is part of the effort to harmonize standards between electronic clinical quality measuresinfo-icon (eCQMsinfo-icon) and clinical decision support (CDSinfo-icon). CQL provides the ability to express logic that is human readable yet structured enough for processing a query electronically.

CQM - Clinical Quality Measure

A mechanism used for assessing the degree to which a provider competently and safely delivers clinical services that are appropriate for the patient in an optimal time frame. CQMsinfo-icon are a subset of the broader category of performance measures.


The lower part of a fraction used to calculate a rate, proportioninfo-icon, or ratioinfo-icon. It can be the same as the initial populationinfo-icon or a subset of the initial population to further constrain the population for the purpose of the measure. Continuous variableinfo-icon measures do not have a denominatorinfo-icon, but instead define a measure population.

Direct Referenced Code

A specific code that is referenced directly in the eCQMinfo-icon logic to describe a data element or one of its attributes. Direct referenced codeinfo-icon metadata include the description of the code, the code systeminfo-icon from which the code is derived, and the version of that code system.

eCQI Implementer

An eCQI implementerinfo-icon does many things to prepare processes and systems such as:

  • Putting measure data components into systems and workflow
  • Using measures when conducting health care activities
  • Providing information from measures to inform quality improvement (e.g., health ITinfo-icon implementer, quality analyst, quality reporting validator).
eCQM - Electronic Clinical Quality Measure

An eCQMinfo-icon is a clinical quality measureinfo-icon that is expressed and formatted to use data from electronic health records (EHRinfo-icon) and/or health information technology systems to measure healthcare quality, specifically data captured in structured form during the process of patient care. So they can be reported from an EHR, the Health Quality Measure Format (HQMFinfo-icon) is used to format the eCQM content using the Quality Data Model (QDMinfo-icon) to define the data elements and Clinical Quality Language (CQLinfo-icon) to express the logic needed to evaluate a provider or organization’s performance.

Efficiency measure

A measure that evaluates the resource use (or cost) associated with a specific level of performance with respect to the aims of quality. For example, a provider in the healthcare system would be efficient if it was able to maximize output for a given set of inputs or to minimize inputs used to produce a given output.

EHR - Electronic Health Record

This is also known as the electronic patient record, electronic medical record, or computerized patient record. As defined by Healthcare Information Management and Systems Society, “the electronic health record (EHRinfo-icon) is a longitudinal electronic record of patient health information generated by one or more encounters in any care delivery setting. Included in this information are patient demographics, progress notes, problems, medications, vital signs, past medical history, immunizations, laboratory data, and imaging reports.”

Eligible Clinician

Refers to a clinician who is eligible to participate in the Quality Payment Program through the Merit-based Incentive Payment System (MIPS) and similar participants of other CMS programs using eCQMinfo-icon’s for quality reporting such as Alternative Payment Model (APM) participants.

Eligible Hospital

Medical facility that reports eCQMsinfo-icon and Improving Interoperability Program data through the CMS QualityNet Secure Portal such as Medicaid-eligible Hospitalsinfo-icon, Medicare-eligible Hospitals, Dual-Eligible Hospitals (both Medicare and Medicaid) and Critical Access Hospitals (CAHs).

Eligible Professional

Health care professionals that report eCQMsinfo-icon and Medicaid Promoting Interoperability Program data through their state-based systems.

Feasibility Criteria

Extent to which the specificationsinfo-icon, including measure logic, require data that are readily available or that could be captured without undue burden and can be implemented for performance measurement.


The standardization of specificationsinfo-icon for related measures with the same measure focus (for example, influenza immunization of patients in hospitals or nursing homes); related measures for the same target populationinfo-icon (for example, eye exam and HbA1c for patients with diabetes); or definitions applicable to many measures (for example, age designation for children) so that they are uniform or compatible, unless differences are justified (in other words, dictated by the evidence). The dimensions of harmonizationinfo-icon can include numeratorinfo-icon, denominatorinfo-icon, exclusions, calculation, and data source and collection instructions. The extent of harmonization depends on the relationship of the measures, the evidence for the specific measure focus, and differences in data sources. Value setsinfo-icon used in measures (especially eCQMsinfo-icon) should be harmonized when the intended meaning is the same. Harmonization of logic in eCQMs is beneficial when the data source in the EHRinfo-icon is the same.

Health IT - Health Information Technology

Per the Health Information Technology for Economic and Clinical Health Act, the term health information technology means hardware, software, integrated technologies or related licenses, intellectual property, upgrades, or packaged solutions provided as services that are designed for or support the use by health care entities or patients for the electronic creation, maintenance, access, or exchange of health information.

Health IT Developer/Vendor

Entity that designs, develops, and/or markets health ITinfo-icon software application(s) for use in hospitals, ambulatory care settings, and/or specialty care delivery settings (e.g., EHRinfo-icon developer, EHR vendor, quality reporting software developer, quality reporting software vendor).

Healthcare Consumer

An individual who uses the services of a healthcare provider e.g., patient receiving care in a hospital, providers office, or a client in a community mental health center. (Retrieved from

Healthcare Payer

Any payer of healthcare services other than the insured person (e.g., insurance company, Health Maintenance Organization, Preferred Provider Organization, or the federal government). (Baxalta. (2015). Glossary of Healthcare Terminology. Retrieved from

HL7 - Health Level Seven International

A standards-developing organization that provides a framework and standards for the exchange, integration, sharing, and retrieval of electronic health information that supports clinical practice and the management, delivery, and evaluation of health services.

HQMF - Health Quality Measure Format

Health Quality Measureinfo-icon Format (HQMF) is an HL7info-icon standards-based representation of a quality measure as an electronic document. A quality measure expressed in this way is also referred to as an electronic clinical quality measure (eCQMinfo-icon).

Impact of a measure - (Importance sub-criterion)

Now called High Priority by the National Quality Forum (NQFinfo-icon). The measure topic addresses a specific national health goal or priority; affects large numbers of patients; is a leading cause of morbidity/mortality; high resource use and severity of patient/societal consequences of poor quality. For patient-reported outcomes, there is evidence that the target populationinfo-icon values the patient reported outcome (PROinfo-icon) and finds it meaningful.

Initial population

Refers to all events to be evaluated by a specific performance electronic clinical quality measureinfo-icon (eCQMinfo-icon) involving patients who share a common set of specified characteristics within a specific measurement set to which a given measure belongs. All patients counted (for example, as numeratorinfo-icon, as denominatorinfo-icon) are drawn from the initial population.

Intermediate outcome

An intermediate outcomeinfo-icon is a (measured) change in physiologic state that leads to a longer-term health outcome. There should be a body of evidence that the measured intermediate clinical outcome leads to a desired health outcome.

Inverse measure

Inverse measuresinfo-icon are measures where a lower performance rate is better. Therefore, a zero performance rate for these measures is a good score. For example, The National Healthcare Safety Network calculates most Healthcare-Associated Infections (HAI) as a standardized infection ratioinfo-icon (SIR). The SIR compares the actual number of HAIs (the numeratorinfo-icon) with the predicted number based on the baseline U.S. experience (e.g., standard population), adjusting for several risk factors that have been found to be most associated with differences in infection rates. The goal is to have the numerator equal to or very close to zero thereby having an SIR equal to or very close to zero.


A long-term approach to work that systematically seeks to achieve incremental changes in order to improve efficiency and quality. It focuses on removing process waste and maximizing value to the customer (in this case the patient).

Lean Kaizen

A Japanese phrase meaning continuous quality improvement by eliminating waste. The principles were implemented after World War II, influenced by American quality management teachers who visited Japan.

Meaningful Measures

The Meaningful Measuresinfo-icon framework is the Centers for Medicare & Medicaid Services's initiative which identifies the highest priorities for quality measurement and improvement. It involves only assessing core issues that are the most critical to providing high-quality care and improving individual outcomes. The Meaningful Measure Areas serve as the connectors between CMS goals and individual measures/initiatives that demonstrate how high-quality outcomes for our beneficiaries are being achieved.

Measure Developer

An individual or organization responsible for the development, implementation, and maintenance of measures. Measure developersinfo-icon create, edit, and submit measures for consideration by CMS to include in programs. CMS encourages developers to use the Blueprint as a guide in creating their measures and to collaborate with other measure developers to share best practices/new learnings freely e.g., CMS measure development contractor, hospital system, medical association, or federal health agency. (Retrieved from

Measure score

The numeric result that is computed by applying the measure specificationsinfo-icon and scoringinfo-icon algorithm. The computed measure scoreinfo-icon represents an aggregation of all appropriate patient-level data (for example, proportioninfo-icon of patients who died, average lab value attained) for the entity being measured (hospital, health plan, home health agency, clinician, etc.). The measure specifications designate the entity that is being measured and to whom the measure score applies.

Measure Steward

An individual or organization that owns a measure and is responsible for maintaining the measure. Measure stewardsinfo-icon are often the same as measure developersinfo-icon, but not always. Measure stewards are also the ongoing point of contact for people interested in a given measure e.g., medical specialty society or federal health agency. (Retrieved from

Measure testing

Empirical analysis to demonstrate the reliability and validityinfo-icon of a measure as specified including analysis of issues that pose threats to the validity of conclusions about quality of care such as exclusions, risk adjustment/stratificationinfo-icon for outcome and resource use measuresinfo-icon, methods to identify differences in performance, and comparability of data sources/methods.

MUC - Measures Under Consideration

A list of quality and efficiency measuresinfo-icon DHHS is considering adopting, through the federal rulemaking process, for use in the Medicare program. Made publicly available by December 1 each year for categories of measures that are described in section 1890(b) (7) (B) (i) (I) of the Affordable Care Act.

NQF - National Quality Forum

Not-for-profit, nonpartisan, membership-based organization that works to catalyze improvements in healthcare.

Null Performance Rate

If the measure is not applicable for all patients within the sample, the performance rate would be 0/0 (null) and would be considered satisfactorily reporting.


The upper portion of a fraction used to calculate a rate, proportioninfo-icon, or ratioinfo-icon. Also called the measure focus, it is the target process, condition, event, or outcome. Numeratorinfo-icon criteria are the processes or outcomes expected for each patient, procedure, or other unit of measurement defined in the denominatorinfo-icon. A numerator statement describes the clinical action that satisfies the conditions of the performance measure.

Numerator exclusions

Defines instances that should not be included in the numeratorinfo-icon data. Numerator exclusionsinfo-icon are used in ratioinfo-icon and proportioninfo-icon measures.

Outcome Measure

A measure that assesses the results of healthcare that are experienced by patients: clinical events, recovery and health status, experiences in the health system, and efficiency/cost.

PRO - Patient-reported outcome

Any report of the status of a patient’s health condition, health behavior, or experience with healthcare that comes directly from the patient, without interpretation of the patient’s response by a clinician or anyone else. This definition reflects the key domains of:

  • Health-related quality of life (including functional status)
  • Symptoms and symptom burden (e.g., pain, fatigue)
  • Experience with care
  • Health behaviors (e.g., smoking, diet, exercise)
PRO-PM - Patient-reported outcome-based performance measure

A performance measure that is based on patient-reported outcome measureinfo-icon (PROMinfo-icon) data aggregated for an accountable healthcare entity.

Process measure

A measure that focuses on a sequence of actions or steps that should be followed to provide high quality evidence-based care. There should be a scientific basis for believing that the process, when executed well, will increase the probability of achieving a desired outcome.

PROM - Patient-reported outcome measure

An instrument, scale, or single-item measure used to assess the patient reported outcome (PROinfo-icon) concept as perceived by the patient, obtained by directly asking the patient to self-report.


A score derived by dividing the number of cases that meet a criterion for quality (the numeratorinfo-icon) by the number of eligible cases within a given time frame (the denominatorinfo-icon) where the numerator cases are a subset of the denominator cases (for example, percentage of eligible women with a mammogram performed in the last year).

Provider - Hospital

Medical facilities that report eCQMsinfo-icon and Improving Interoperability Program data through the CMS QualityNet Secure Portal. They include: Medicaid-eligible Hospitalsinfo-icon, Medicare-eligible Hospitals, Dual-Eligible Hospitals (both Medicare and Medicaid), and Critical Access Hospitals (CAHs).

Provider - Professional/Clinician

Refers to clinicians and health care professionals who are eligible to participate in the Quality Payment Program through the Merit-based Incentive Payment System (MIPS), Medicaid Promoting Interoperability Program, and similar participants of other CMS programs using eCQMsinfo-icon for quality reporting such as Alternative Payment Models (APMs).

QDM - Quality Data Model

The Quality Data Model (QDMinfo-icon) is an information model that defines relationships between patients and clinical concepts in a standardized format to enable electronic quality performance measurement. The model is the current structure for electronically representing quality measureinfo-icon concepts for stakeholders involved in electronic quality measurement development and reporting.

QRDA - Quality Reporting Document Architecture

QRDAinfo-icon is a standard document format for the exchange of electronic clinical quality measureinfo-icon (eCQMinfo-icon) data. The QRDA documents:

  • Contain data extracted from electronic health records (EHRs) and other health information technology systems
  • Can be used to exchange eCQM data between systems
  • Are the data submission standards for a variety of quality measurement and reporting initiatives
  • Were adopted by the Office of the National Coordinator for Health Information Technology (ONC) as the standard to support both QRDA Category I (individual patient) and QRDA Category III (provider’s aggregate) data submission
Quality measure - (or performance measure)

Numeric quantification of healthcare quality for a designated accountable healthcare entity, such as hospital, health plan, nursing home, clinician, etc. A healthcare performance measure is a way to calculate whether and how often the healthcare system does what it should. Measures are based on scientific evidence about processes, outcomes, perceptions, or systems that relate to high-quality care.


A score that is derived by dividing a count of one type of data by a count of another type of data (for example, the number of patients with central lines who develop infection divided by the number of central line days).

Resource use measure

Also called a cost and resource use measureinfo-icon. Refers to broadly applicable and comparable measures of health services counts (in terms of units or dollars) applied to a population or event (broadly defined to include diagnoses, procedures, or encounters). A resource use measure counts the frequency of defined health system resources. Some measures may monetize the health service by applying a dollar amount such as allowable charges, paid amounts, or standardized prices to each unit of resource use.

Respecified Measure

An existing measure is changed to fit the current purpose or use. This may mean changing a measure to meet the needs of a different care setting, data source, or population. Or, it may mean changes to the numeratorinfo-icon, denominatorinfo-icon, or adding specificationsinfo-icon to fit the current use.


Method(s) applied to data to generate results/score. Most quality measuresinfo-icon produce rates. However, other scoringinfo-icon methods include categorical value, continuous variableinfo-icon, count, frequency distribution, non-weighted score/composite/scale, ratioinfo-icon, and weighted score/composite/scales.

Semantic validation

A method of testing the validityinfo-icon of an electronic clinical quality measureinfo-icon (eCQMinfo-icon) whereby the formal criteria in an eCQM are compared to a manual computation of the measure from the same test database.


As a statistical term, sensitivityinfo-icon refers to the proportioninfo-icon of actual positives that are correctly identified as such (for example, the percentage of people with diabetes who are correctly identified as having diabetes). See Specificityinfo-icon.


Measure instructions that address: data elements, data sources, point of data collection, timing and frequency of data collection and reporting, specific instruments to be used (if appropriate), and implementation strategies.


As a statistical term, specificityinfo-icon refers to the proportioninfo-icon of negatives that are correctly identified (for example, the percentage of healthy people who are correctly identified as not having the condition). Perfect specificity would mean that the measure recognizes all actual negatives (for example, all healthy people will be recognized as healthy). See Sensitivityinfo-icon.


Divides a population or resource services into distinct, independent groups of similar data, enabling analysis of the specific subgroups. This type of adjustment can show where disparities exist or where there is a need to expose differences in results.

Structural measure

A structural measure is one that assesses features of a healthcare organization or clinician relevant to its capacity to provide healthcare.

STU - Standard for Trial Use

STUs are used to "provide timely compliance with regulatory or other governmental mandate and/or timely response to industry or market demand." STUinfo-icon, following a suitable period for evaluation and comment, are incorporated into fully balloted and accredited version of the standard. Formerly called Draft Standard for Trial Use (DSTU).

Target population

The numeratorinfo-icon (cases) and denominatorinfo-icon (population sample meeting specified criteria) of the measure.

Usability criteria

Extent to which intended audiences (for example, consumers, purchasers, providers, policy makers) can understand a measure’s results and find them useful for quality improvement and decision making. Usability criteriainfo-icon ask if the measure is strong enough to be used for various types of measurement programs, including public reporting, whether it leads to actual improvement for patients, and whether the benefits of the measure outweigh any potential harms.

Validity - (scientific acceptability of measure properties subcriterion)

Measure validityinfo-icon: The measure accurately represents the concept being evaluated and achieves the purpose for which it is intended (to measure quality). For example, the measure:

  • Clearly identifies the concept being evaluated (face validity)
  • Includes all necessary data elements, codes, and tables to detect a positive occurrence when one exists (construct validity)
  • Includes all necessary data sources to detect a positive occurrence when one exists (construct validity)

Data element validity: The extent to which the information represented by the data element or code used in the measure reflects the actual concept or event intended. For example:

  • A medication code is used as a proxy for a diagnosis code
  • Data element response categories include all values necessary to provide an accurate response
Value Set

Value setsinfo-icon are lists of specific values (terms and their codes) used to describe clinical and administrative concepts in the quality measuresinfo-icon. They provide groupings of unique values along with a standard description or definition from one or more standard vocabularies used to describe the same clinical concept (e.g., diabetes, clinical visit, demographics) within the quality measures.

vMR - Virtual Medical Record

Data model for representing the data that are analyzed and/or produced by clinical decision support (CDSinfo-icon) engines.

XML - eXtensible Markup Language

A markup language that defines a set of rules for encoding documents in a format which is both human-readable and machine-readable.