C50Malignant neoplasm of breast

C50 is the ICD-10-CM diagnosis code for malignant neoplasm of breast. It belongs to block C50 (malignant neoplasms of breast) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: C50.0 (areola), C50.1 (breast), C50.2 (breast), C50.3 (breast), C50.4 (breast), C50.5 (breast), C50.6 (breast), C50.8 (breast) and 2 more.

Don't report C50 together with the conditions in its Excludes1 note: skin of breast (C44.501, C44.511, C44.521, C44.591).

Use an additional code to identify estrogen, and other hormones and factors receptor status (Z17.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.