Short answer · Medically reviewed summary · Last updated: 2026-05-08
Uterine Carcinosarcoma, also known as Malignant Mixed Müllerian Tumor (MMMT), is coded under ICD-10 as C54.2 (Malignant neoplasm of corpus uteri) and was historically categorized under ICD-9 as 182.0. Because Uterine Carcinosarcoma is a rare, aggressive biphasic tumor, these codes are essential for medical billing, tracking, and clinical research documentation. What is the clinical classification of Uterine Carcinosarcoma (MMMT)? Uterine Carcinosarcoma (MMMT) is a rare gynecological malignancy that contains both carcinomatous and sarcomatous elements.
ICD10 code of Uterine Carcinosarcoma (MMMT) and ICD9 code
ICD-10 and ICD-9 codes for Uterine Carcinosarcoma (MMMT), with classification details for clinicians, coders and patients.
Uterine Carcinosarcoma, also known as Malignant Mixed Müllerian Tumor (MMMT), is coded under ICD-10 as C54.2 (Malignant neoplasm of corpus uteri) and was historically categorized under ICD-9 as 182.0. Because Uterine Carcinosarcoma is a rare, aggressive biphasic tumor, these codes are essential for medical billing, tracking, and clinical research documentation.
What is the clinical classification of Uterine Carcinosarcoma (MMMT)?
Uterine Carcinosarcoma (MMMT) is a rare gynecological malignancy that contains both carcinomatous and sarcomatous elements. While it is often classified alongside endometrial cancers, its aggressive behavior and high potential for recurrence and metastasis necessitate specialized oncological care. In the DiseaseMaps.org community, 31 individuals have connected to share their experiences with this challenging diagnosis, highlighting the importance of specialized tracking via accurate ICD coding.
How is Uterine Carcinosarcoma (MMMT) coded for medical billing?
Accurate coding is vital for insurance authorization and data collection in clinical registries. When clinicians document Uterine Carcinosarcoma (MMMT), they typically utilize the following classification systems:
- ICD-10-CM: C54.2 (Malignant neoplasm of corpus uteri) is the standard code used for primary Uterine Carcinosarcoma (MMMT).
- ICD-9-CM: 182.0 (Malignant neoplasm of corpus uteri) served as the primary reference code prior to the transition to ICD-10.
- Histological Coding: Pathologists often supplement these codes with the ICD-O (International Classification of Diseases for Oncology) code 8950/3 for mixed Müllerian tumors.
Why is early identification of Uterine Carcinosarcoma (MMMT) critical?
Because Uterine Carcinosarcoma (MMMT) is highly aggressive, early diagnosis is essential for staging and treatment planning. Patients often present with postmenopausal bleeding. Understanding the clinical coding for Uterine Carcinosarcoma (MMMT) helps ensure that patients are directed to gynecologic oncologists who specialize in managing this rare, biphasic malignancy.
Next steps
- Consult with a board-certified gynecologic oncologist to discuss a personalized treatment strategy.
- Verify your medical records reflect the correct ICD-10 diagnosis to ensure access to appropriate clinical trials.
- Connect with the 31 members at DiseaseMaps.org who share the experience of living with Uterine Carcinosarcoma (MMMT) for peer support.
Medical disclaimer: This information is for educational purposes only and does not constitute professional medical advice, diagnosis, or treatment; always seek the advice of your physician or qualified health provider.
References
- NIH Genetic and Rare Diseases Information Center (GARD)
- Orphanet (ORPHA: 99933 - Malignant mixed Müllerian tumor)
- World Health Organization (WHO) International Classification of Diseases (ICD-10)
- National Cancer Institute (NCI) Physician Data Query (PDQ) for Uterine Sarcoma
