Refer to the ICD-10-CM Official Guidelines I.C.2.b which states: When a patient is admitted because of a ________ neoplasm with metastasis and treatment is directed toward the secondary site only, the ________ neoplasm is designated as the principal diagnosis even though the primary malignancy is still present.

Question

Quizplus · Accepted Answer

The correct answer is B) primary, secondary. According to the ICD-10-CM Official Guidelines, when a patient is admitted due to a primary neoplasm with metastasis and treatment is directed toward the secondary site only, the primary neoplasm is designated as the principal diagnosis, even if the primary malignancy is still present.