Practice Test Geeks(CTR) Certified Tumor Registrar Practice Test
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Coding & Classification Systems Flashcards

7 cards from real CTR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. A registrar encounters a pathology report for 'squamous cell carcinoma in situ of the skin.' Which ICD-O-3 morphology code is most appropriate?

    Answer: 8070/2

    Squamous cell carcinoma in situ is coded 8070/2, where /2 indicates the in situ behavior.

  2. Under AJCC 8th edition, which prefix is applied to the T, N, or M category to indicate staging performed after neoadjuvant therapy?

    Answer: yp or yc

    The 'y' prefix (yc or yp) is applied to TNM categories when staging is performed after neoadjuvant (preoperative) systemic or radiation therapy.

  3. Which ICD-O-3 topography code should be assigned to a malignant mesothelioma arising from the pleura?

    Answer: C45.0

    Malignant mesothelioma of the pleura is coded to C45.0 in ICD-O-3, which is the specific topography for pleural mesothelioma.

  4. When a patient is diagnosed with a second primary cancer in the same organ more than three years after the first, what is the general guidance under SEER MPH rules?

    Answer: Abstracted as a new primary if histology differs or per site-specific rule

    SEER MPH rules generally support abstraction as a new primary when there is a different histology or sufficient time elapsed, per site-specific instructions.

  5. In the STORE (Standards for Oncology Registry Entry) manual, which section defines the rules for determining 'Date of Diagnosis'?

    Answer: Section on Coding Dates and Timing

    STORE's coding rules for dates, including Date of Diagnosis, are covered in the section addressing date coding and timing of diagnostic events.

  6. A lymphoma is diagnosed as 'follicular lymphoma, grade 1.' What ICD-O-3 histology code applies?

    Answer: 9695/3

    Follicular lymphoma, grade 1 is coded 9695/3 in ICD-O-3 (follicular lymphoma, small cleaved cell/grade 1).

  7. Which coding rule applies when a patient has a clinical diagnosis of cancer but the biopsy result is listed as 'no malignancy found'?

    Answer: Do not report the case

    When pathologic evidence contradicts a clinical diagnosis and shows no malignancy, the case is not reportable based on that evidence.

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