ICD 10 Z Codes and External Causes 3

Question 1

When coding an initial encounter for an accidental injury, ICD-10-CM guidelines recommend assigning at minimum:

Accepted Answer

The injury code, external cause code, and place of occurrence code

Answer

Guidelines encourage reporting the injury, the mechanism (external cause code), and the place of occurrence to fully document the circumstances of injury.

Question 2

A patient is a known hepatitis B carrier with no active disease symptoms. The appropriate code is:

Accepted Answer

Z22.51 – Carrier of viral hepatitis B

Answer

Z22.5 carrier codes are assigned when a patient harbors an infectious organism without manifesting the disease, distinguishing them from active or historical cases.

Question 3

For a subsequent encounter during the healing phase of a fracture, the seventh character assigned is:

Accepted Answer

D – Subsequent encounter

Answer

The seventh character 'D' designates a subsequent encounter, used for visits after the initial treatment when the patient is in the healing or recovery phase.

Question 4

A screening colonoscopy in an asymptomatic patient is coded with a Z code because:

Accepted Answer

The test is being performed to detect a disease not yet diagnosed or suspected

Answer

Z12 screening codes apply when a test is done to find a disease in a patient with no signs or symptoms of that disease.

Question 5

Which Z code indicates the presence of a cardiac pacemaker?

Accepted Answer

Z95.0 – Presence of cardiac pacemaker

Answer

Z95.0 is the status code for presence of a cardiac pacemaker, used as a secondary code to indicate this device is implanted and functional.

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ICD 10 Practice Test

ICD 10 Z Codes and External Causes 3