Medical Coding Exam Prep

Category - ICD-10

Mrs. Jennifer is diagnosed with adenocarcinoma in her right ovary. She was admitted to the hospital for oophorectomy two days ago. Now, the doctor decided to start her chemotherapy. What is the appropriate ICD-10 code for chemotherapy in this patient? 
  1. Z51.11
  2. Z51.12
  3. C56.2
  4. C56.9
Explanation
 Answer: A 

Z51.11 is the appropriate code for “Encounter for antineoplastic chemotherapy,” which is done in the patient under treatment for adenocarcinoma. 

Option B is not correct because Z51.12 codes for “Encounter for antineoplastic immunotherapy,” which is not done here. 

Option C is not correct because C56.2 is for malignant neoplasm of the left ovary, which is not a procedure and also not the primary diagnosis. 

Option D is not correct because C56.9 is for malignant neoplasm of the unspecified ovary, which is not the procedure nor the diagnosis in this patient. 
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