CTR Coding & Classification Systems 2

Question 1

According to ICD-O-3, which topography code represents the upper-outer quadrant of the breast?

Accepted Answer

C50.4

Answer

C50.4 designates the upper-outer quadrant of the breast in ICD-O-3 topography coding.

Question 2

When coding histology in ICD-O-3, what does the fifth digit (behavior code) of '/3' indicate?

Accepted Answer

Malignant, primary site

Answer

In ICD-O-3, behavior code /3 denotes a malignant neoplasm at the primary site.

Question 3

Which AJCC staging edition introduced the concept of 'clinical prognostic stage' as a required stage group for breast cancer?

Accepted Answer

8th edition

Answer

The AJCC 8th edition (effective 2018) introduced clinical prognostic stage incorporating biomarkers for breast cancer.

Question 4

Under SEER Summary Stage 2018, a tumor that has spread to regional lymph nodes but not to distant sites is classified as:

Accepted Answer

Regional

Answer

SEER Summary Stage 2018 classifies regional lymph node involvement as 'Regional' stage.

Question 5

Which coding system is used to classify the cause of death on a cancer patient's death certificate for registry purposes?

Accepted Answer

ICD-10 (underlying cause)

Answer

ICD-10 (the underlying cause of death classification) is used to code cause of death on death certificates.

(CTR) Certified Tumor Registrar Practice Test