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

Only the injury code

Answer

The injury code plus an external cause code

Answer

The injury code and a Z code only

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

B16.9 – Acute hepatitis B

Answer

B19.10 – Unspecified chronic viral hepatitis B

Answer

Z86.19 – Personal history of other infectious diseases

Question 3

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

Accepted Answer

D – Subsequent encounter

Answer

A – Initial encounter

Answer

S – Sequela

Answer

G – Subsequent encounter for fracture with delayed healing

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

The patient has a confirmed diagnosis of colon cancer

Answer

The screening results were abnormal

Answer

The procedure was ordered by a specialist, not a primary care physician

Question 5

Which Z code indicates the presence of a cardiac pacemaker?

Accepted Answer

Z95.0 – Presence of cardiac pacemaker

Answer

Z96.611 – Presence of right artificial knee joint

Answer

Z99.89 – Dependence on other enabling machines

Answer

Z95.810 – Presence of automatic implantable cardiac defibrillator

Question 6

Undetermined intent external cause codes (Y21-Y33) are assigned only when:

Accepted Answer

Documentation explicitly states the intent cannot be determined

Answer

The patient cannot recall how the injury occurred

Answer

The physician suspects self-harm but has no confirmation

Answer

No witness was present at the time of injury

Question 7

The ICD-10-CM Z code used to document a patient's 'do not resuscitate' (DNR) order is:

Accepted Answer

Z66

Answer

Z68.1

Answer

Z51.5

Answer

Z53.21