ICD-9 Code 198.6 - Secondary malignant neoplasm of ovary

ICD-9-CM Diagnosis Code 198.6

Diagnosis Code: 198.6 (Raw: 1986)

Description: Secondary malignant neoplasm of ovary

Classification: International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM)

Fiscal Year: 2026 Reference

CMS Section 111 Status: Valid for reporting.

Overview & Historical Usage

ICD-9-CM code 198.6 is designated for Secondary malignant neoplasm of ovary. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical clinical data analysis.