ICD 10 Coding Alert

Reader Questions:

Target 3 ICD-10 Options for Borderline Ovarian Tumors

Question: The pathology report for our patient being investigated for ovarian cancer mentions “Serous tumor of low malignant potential (atypical proliferative serous tumor of ovary).” Can we report code 183.0 for this diagnosis?

Florida Subscriber

Answer: You should not use 183.0 (Malignant neoplasm of ovary). The pathology reports ‘low malignant potential.’ This type of tumor is considered a borderline malignancy and is confined to the ovary. Once removed, there is a 95-100 percent survival rate, but this type of tumor can recur in other areas, and some of them do later become invasive.

ICD-10-CM: Code 183.0 splits into three options in ICD-10-CM:

  • C56.1, Malignant neoplasm of right ovary
  • C56.2, ... left ovary
  • C56.9, ... unspecified ovary.

Hit the most appropriate code: Because it is a borderline tumor, you should think of it as a tumor of uncertain behavior, and you should report 236.2 (Neoplasm of uncertain behavior of ovary).

ICD-10-CM: Again, code 236.2 splits into three options in ICD-10-CM:

  • D39.10, Neoplasm of uncertain behavior of unspecified ovary
  • D39.11, Neoplasm of uncertain behavior of right ovary
  • D39.12, Neoplasm of uncertain behavior of left ovary.

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