Glossary

Acronyms
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Glossary and Acronyms
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CERTIFICATE OF MEDICAL NECESSITY

A form required by Medicare that allows you to use certain durable medical equipment prescribed by your doctor or one of the doctor’s office staff.

CERTIFIED (CERTIFICATION)

This means a hospital has passed a survey done by a State government agency. Being certified is not the same as being accredited. Medicare only covers care in hospitals that are certified or accredited.

CERTIFIED NURSING ASSISTANT (CNA)

CNAs are trained and certified to help nurses by providing non-medical assistance to patients, such as help with bathing, dressing, and using the bathroom.

CERTIFIED REGISTERED NURSE ANESTHETIST

A nurse who is trained and licensed to give anesthesia. Anesthesia is given before and during surgery so that a person does not feel pain. (See Anesthesia.)

CHAIN OF TRUST

A term used in the HIPAA Security NPRM for a pattern of agreements that extend protection of health care data by requiring that each covered entity that shares health care data with another entity require that that entity provide protections comparable to those provided by the covered entity, and that that entity, in turn, require that any other entities with which it shares the data satisfy the same requirements.

CHAIN OF TRUST AGREEMENT

Contract needed to extend the responsibility to protect health care data across a series of sub-contractual relationships.

CHRONIC MAINTENANCE DIALYSIS

Dialysis that is regularly furnished to an ESRD patient in a hospital based independent (non-hospital based), or home setting.

CIVILIAN HEALTH AND MEDICAL PROGRAM (CHAMPUS)

Run by the Department of Defense, in the past CHAMPUS gave medical care to active duty members of the military, military retirees, and their eligible dependents. (This program is now called "TRICARE")

CLAIM

A claim is a request for payment for services and benefits you received. Claims are also called bills for all Part A and Part B services billed through Fiscal Intermediaries. "Claim" is the word used for Part B physician/supplier services billed through the Carrier. (See Carrier; Fiscal Intermediaries; Medicare Part A; Medicare Part B.)

CLAIM ADJUSTMENT REASON CODES

A national administrative code set that identifies the reasons for any differences, or adjustments, between the original provider charge for a claim or service and the payer's payment for it. This code set is used in the X12 835 Claim Payment & Remittance Advice and the X12 837 Claim transactions, and is maintained by the Health Care Code Maintenance Committee.