C50.911 — Malignant neoplasm of unspecified site of right female breast
C50.911

What this code means
Cancer that starts in the right breast of a woman.
Also called: right breast cancer.
When this code is used
Used for malignant neoplasm of the right female breast when the site within the breast is not specified.
Where it sits in ICD-10-CM
Code C50.911 belongs to Chapter 2: Neoplasms, which covers codes C00–D49 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
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Frequently asked questions
What is ICD-10-CM code C50.911?
C50.911 is the ICD-10-CM diagnosis code for “Malignant neoplasm of unspecified site of right female breast”. Cancer that starts in the right breast of a woman.
When is code C50.911 used?
Used for malignant neoplasm of the right female breast when the site within the breast is not specified. It belongs to Chapter 2 of ICD-10-CM (Neoplasms).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.