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CHDA Exam Questions And Accurate Answers
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CHDA Exam Questions And Accurate Answers 2024-2025Alpha level - Answer The level of Type I error that is acceptable based on context in
statistical hypothesis testing. See Type I error.
Alternative hypothesis - Answer The complement of the null hypothesis that is to be
tested using the appropriate statistical test. The hypothesis usually involves some
action to be taken.
Ambulatory payment classification (APC) - Answer The payment unit used in the hospital
outpatient prospective payment system (OPPS). The classification is a resource-based
reimbursement system.
Analysis - Answer Reviewing and summarizing data for use in decision making.
Analysis of variance - Answer The statistical tool used to compare more than two
population means. The null hypothesis tests that all of the population means are equal.
Auditing - Answer "The performance of internal and external reviews audits to identify
variations from established baselines for example review of outpatient coding as
compared with CMS outpatient coding guidelines".
Balanced design - Answer An experimental design where the number of subjects in each
sample are the same for all populations sampled. The term is relevant when performing
an analysis of variance or a two sample t-test.
Bell curve - Answer The shape of the normal distribution. The bell pealcs at the average
and slopes down on both sides symmetrically.
Binomial variable - Answer "A variable that talces only two values (such as yes or no;
alive or dead). The probability of a yes or no is constant across all of the subjects, and
, the outcome of each subject is independent of the others."
Case Mix Index (CMI) - Answer "The average relative weight of all cases treated at a
given facility or by a given physician; it reflects the resource intensity or clinical severity
for a specific group compared with other groups within a classification system;
calculated as the sum of the weights of the diagnosis-related groups for patients
discharged during a period divided by the total number of patients discharged."
Centers for Medicare and Medicaid Services (CMS) - Answer "The branch of the
Department of Health and Human Services responsible for health care policy in the
United States, overseeing the Medicare and Federal portion of the Medicaid program,
and in maintaining the procedure part of the International Classification of Diseases,
ninth revision, Clinical Modification (ICD-9-CM) and International Classification of
Diseases, tenth revision, Procedure Coding System (ICD-10-PCS); formerly known as
the Health Care Financing Administration (HCFA) before 2001.
Chi-square test - Answer A statistical test used to test for associations between
categorical variables. This test's null hypothesis is that the two variable are unrelated.
Represented by the symbol X2 (where X is the Greek letter chi.)
Cluster random sampling-Answer "The population is divided into groups before the
sample is selected. The groups or clusters must be mutually exclusive and exhaustive.
(That is, every unit in the population is assigned to one and only one cluster.) Clusters
are then randomly selected to make up the sample. Cluster sampling may be performed
as single-stage or two-stage."
Cluster Sampling-A method of sampling in which the population is first divided into
distinct groups, or clusters; a random selection of these groups then constitutes the
sample
CMS-1500 - A universal insurance claim form developed and approved by the American
Medical Association (AMA) and the Centers for Medicare and Medicaid Services (CMS)
that physicians use to bill for professional services provided to Medicare, Medicaid, and
private insurers. 2. A form used to bill Medicare third-party payers for provider services,
for example, physician office visits.
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