Malignant neoplasm of ovary (C56) ICD-10-CM
The C56 code range covers malignant neoplasm of ovary with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code to identify any functional activity
Codes in the C56 Range 5 codes · 4 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C56 range.
Malignant Ovarian Neoplasm
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.
About the C56 Code Range
Ovarian cancer can start in an ovary or spread there from elsewhere in the body.
Within malignant tumors of female genital organs, C56 groups ovarian cancers by which ovary is involved: right (C56.1), left (C56.2), both (C56.3), or unspecified (C56.9).
Questions About This Page
How many billable codes are in the C56 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the C56 range classify?
The range classifies malignant neoplasm of ovary. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
