2024 ICD-10-CM Diagnosis Code C56

by

Malignant neoplasm of ovary

  • C56 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2024 edition of ICD-10-CM C56 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C56 – other international versions of ICD-10 C56 may differ.

Use Additional

  • code to identify any functional activity

The following code(s) above C56 contain annotation back-references

 that may be applicable to C56:

  • C00-D49  Neoplasms
  • C51-C58  Malignant neoplasms of female genital organs

Clinical Information

  • A primary or metastatic malignant neoplasm involving the ovary. Most primary malignant ovarian neoplasms are either carcinomas (serous, mucinous, or endometrioid adenocarcinomas) or malignant germ cell tumors. Metastatic malignant neoplasms to the ovary include carcinomas, lymphomas, and melanomas.
  • A primary or metastatic malignant tumor involving the ovary. Most primary malignant ovarian neoplasms are either carcinomas (serous, mucinous, or endometrioid adenocarcinomas) or malignant germ cell tumors. Metastatic malignant neoplasms to the ovary include carcinomas, lymphomas, and melanomas.
  • Cancer that forms in tissues of the ovary (one of a pair of female reproductive glands in which the ova, or eggs, are formed). Most ovarian cancers are either ovarian epithelial carcinomas (cancer that begins in the cells on the surface of the ovary) or malignant germ cell tumors (cancer that begins in egg cells).
  • The ovaries are part of the female reproductive system. They produce a woman’s eggs and female hormones. Each ovary is about the size and shape of an almond.cancer of the ovary is not common, but it causes more deaths than other female reproductive cancers. The sooner ovarian cancer is found and treated, the better your chance for recovery. But ovarian cancer is hard to detect early. Women with ovarian cancer may have no symptoms or just mild symptoms until the disease is in an advanced stage. Then it is hard to treat. Symptoms may include
    • a heavy feeling in the pelvis
    • pain in the lower abdomen
    • bleeding from the vagina
    • weight gain or loss
    • abnormal periods
    • unexplained back pain that gets worse
    • gas, nausea, vomiting, or loss of appetite
    to diagnose ovarian cancer, doctors do one or more tests. They include a physical exam, a pelvic exam, lab tests, ultrasound, or a biopsy. Treatment is usually surgery followed by chemotherapy. nih: national cancer institute

Code History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Code annotations containing back-references to C56:

  • Code First: R18.0
  • Type 1 Excludes: C75

Diagnosis Index entries containing back-references to C56: