Short answer · Medically reviewed summary · Last updated: 2026-04-06
The ICD-10-CM code for a Phyllodes tumor of the breast is D48.61, while the ICD-9-CM code historically used for this condition is 217. As a specialist physician, I understand that navigating the coding and classification of a Phyllodes tumor can be confusing for patients, especially when you are focused on treatment planning and recovery. These codes are essential for medical billing, insurance authorization, and clinical documentation to ensure that your healthcare team accurately tracks the diagnosis and surgical management of your breast tissue. Understanding the Classification A Phyllodes tumor is a fibroepithelial lesion that is distinct from common breast cancers.
6 people with Phyllodes tumor have shared their first-person experience on this question at DiseaseMaps.
The ICD-10-CM code for a Phyllodes tumor of the breast is D48.61, while the ICD-9-CM code historically used for this condition is 217.
As a specialist physician, I understand that navigating the coding and classification of a Phyllodes tumor can be confusing for patients, especially when you are focused on treatment planning and recovery. These codes are essential for medical billing, insurance authorization, and clinical documentation to ensure that your healthcare team accurately tracks the diagnosis and surgical management of your breast tissue.
A Phyllodes tumor is a fibroepithelial lesion that is distinct from common breast cancers. Because these tumors can range from benign to borderline or malignant, the ICD-10 classification system helps providers distinguish the nature of the growth. While D48.61 is the primary code used for a Phyllodes tumor, your pathologist may provide further sub-classification based on the histological grade—benign, borderline, or malignant—which dictates the clinical management and follow-up surveillance schedule.
It is important to remember that these codes are administrative tools, not definitions of your prognosis. If you have been diagnosed with a Phyllodes tumor, your care team will focus primarily on the surgical margins obtained during excision, as local recurrence is a primary concern. We often utilize these diagnostic codes to facilitate long-term monitoring, which typically involves regular clinical breast exams and imaging to detect any potential recurrences early. Managing a Phyllodes tumor requires a multidisciplinary approach, often involving a breast surgeon, a radiologist, and a pathologist who specializes in fibroepithelial breast lesions to ensure the most accurate interpretation of your specific case.
Medical Disclaimer: This information is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.