Medical Coding Systems & Classification Flashcards

In ICD-10-CM, the placeholder character 'X' is used to:

Answer: Allow for future code expansion and maintain code length requirements

The placeholder 'X' is inserted to allow future expansion of codes and to fill positions when a code requires a specific character in a later position.

CPT modifier -51 is appended to indicate:

Answer: Multiple procedures performed at the same session

Modifier -51 indicates multiple procedures were performed at the same operative session, and payers often apply a reduction to the second and subsequent procedures.

Which ICD-10-CM Excludes note means the two conditions cannot occur together and both codes should never be reported simultaneously?

Answer: Excludes1

Excludes1 indicates a 'pure' exclusion where the two conditions cannot coexist, so both codes should not be assigned for the same patient at the same time.

ICD-10-CM chapter 21 codes (Z codes) are used to describe:

Answer: Factors influencing health status and contact with health services

Z codes classify factors influencing health status such as screenings, vaccinations, and encounters for reasons other than illness or injury.

In the CPT codebook, a triangle symbol (▲) next to a code indicates:

Answer: A revised code description

A triangle (▲) symbol in CPT denotes that the code's descriptor has been revised from the previous year.

Which official guideline governs sequencing of the principal diagnosis in the inpatient setting?

Answer: UHDDS definition of principal diagnosis

The Uniform Hospital Discharge Data Set (UHDDS) defines the principal diagnosis as the condition established after study to be chiefly responsible for the admission.

The DSM-5 classification system is primarily used for coding:

Answer: Mental health and behavioral disorders

The Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5), provides diagnostic criteria and codes for mental health conditions.