CCA (CNCF) key terms

The US clinical modification of the international classification used to assign diagnosis codes for inpatient and outpatient encounters, organized by body system and expanded to five or more characters for specificity.

The US procedure classification used only for inpatient hospital reporting, built from seven-character codes describing the section, body system, root operation, body part, approach, device, and qualifier.

The AMA-maintained code set of five-character numeric codes and descriptors used to report physician and outpatient services and procedures for reimbursement and tracking.

A CMS-maintained alphanumeric code set covering supplies, drugs, durable medical equipment, and services not represented in CPT, used mainly by Medicare and other payers.

A CPT category describing cognitive services such as office visits, hospital visits, and consultations, selected by documented history, examination, and medical decision making or time.

A two-character suffix added to a code to report a circumstance that changes the service, such as laterality, a distinct procedure, or a professional versus technical component.

In ICD-10-PCS, the third character of a procedure code that identifies the objective of the procedure, such as excision, drainage, or bypass.

The practice of assigning the most detailed code supported by documentation, including laterality, encounter type, and all documented complications, rather than an unspecified code.

A formal, nonleading communication from a coder to a clinician requesting clarification or additional documentation needed to assign a complete and accurate code.

A payer rule stating that certain component services are included in a larger procedure and cannot be billed separately unless a valid modifier or documentation supports separate payment.

A CMS program that publishes procedure-to-procedure edits and medically unlikely edits to prevent improper payment when services are reported together inappropriately.

The complexity of establishing a diagnosis and choosing a management option, judged by number and complexity of problems, amount of data reviewed, and risk of complications.

A comprehensive clinical terminology of concepts with synonyms and relationships, used in electronic health records and mapped to classifications for reporting and interoperability.

A standard code system for identifying laboratory tests and clinical observations, enabling exchange and comparison of results across different systems and laboratories.

A three-segment identifier assigned to drugs in the US, reporting the labeler, the product, and the package size, used in claims and pharmacy systems.

A defined list of codes drawn from one or more terminologies that specifies which concepts are included for a particular use, such as a quality measure or clinical decision rule.

The ability of different information systems to exchange data and to use the exchanged data correctly, supported by shared standards, terminologies, and transport specifications.

A standard that defines resources and application programming interfaces for exchanging healthcare data, widely used for modern interoperability and patient access programs.

The standards organization that develops messaging and exchange specifications, including version 2 messages and the FHIR standard, used for health data exchange.

A document or repository that defines each data element in a system, including its name, definition, format, allowed values, and source, supporting consistent interpretation.

The smallest named unit of data with a defined meaning, format, and permitted values, such as date of birth or discharge disposition, used in records and exchanges.

Data that describes other data, such as definitions, formats, ownership, and dates, helping users find, understand, and trust the underlying information.

The framework of roles, policies, and processes that defines who is accountable for data quality, access, and use across an organization.

The operational responsibility for managing data assets day to day, including maintaining definitions, monitoring quality, and resolving issues within assigned domains.

The degree to which data are accurate, complete, consistent, timely, and fit for their intended use in clinical care, reporting, and payment.

The assurance that data remain unaltered, complete, and attributable throughout their lifecycle, protecting against unauthorized or accidental modification.

A chronological record of system activity that identifies who accessed or changed data, when, and what changed, supporting accountability and investigation.

An emergency access function that lets authorized users override normal access restrictions, typically triggering heightened monitoring and later review of the access.

The privacy principle requiring that uses, disclosures, and requests for protected health information be limited to the least amount reasonably needed for the purpose.

Individually identifiable health information held or transmitted by a covered entity or business associate in any form, subject to federal privacy and security rules.

A contract required before a vendor handles protected health information on behalf of a covered entity, specifying permitted uses, safeguards, and breach obligations.

The end-to-end financial process from patient scheduling and registration through coding, claim submission, payment posting, and collections, including denial management.

A claim submitted with all required data accurate and complete so that it can be processed without rejection, correction, or additional information from the provider.

Software that checks claims against payer edits and internal rules before submission, flagging errors such as invalid code combinations or missing data.

A payer's refusal to pay all or part of a claim, often due to eligibility, coding, authorization, or medical necessity issues, requiring review and possible appeal.

A measure of how long it takes on average to collect payment after a service, calculated by dividing outstanding receivables by average daily charges or payments.

The process of recording services, supplies, and drugs provided to a patient so they can be billed, relying on accurate documentation and timely entry.

An organization's catalog of billable items and services with their codes, descriptions, and prices, maintained to support accurate and compliant billing.

A program that improves the accuracy and completeness of clinician documentation so that coded data reflect the patient's true severity of illness and care provided.

A federal statute imposing liability on parties who knowingly submit or cause submission of false or fraudulent claims to government payers, with whistleblower provisions.

Assigning a code for a higher-paying or more severe service than the documentation supports, a form of fraud when done knowingly.

A structured set of policies, training, monitoring, and reporting mechanisms designed to prevent and detect violations of law and payer requirements.