C50 – Malignant neoplasm of breast
ICD-10-CM 2027 diagnosis code · Malignant neoplasms of breast (C50)
ICD-10-CM code
C50
- Code
C50(claims format:C50)- Description
- Malignant neoplasm of breast
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 2. Neoplasms (C00-D49)
- Block
- C50 Malignant neoplasms of breast (C50)
Billable codes under C50
C50 is a header code and cannot be used on claims. Choose the most specific code:
- C50.0 – Malignant neoplasm of nipple and areolaHeader (more codes below)
- C50.1 – Malignant neoplasm of central portion of breastHeader (more codes below)
- C50.2 – Malignant neoplasm of upper-inner quadrant of breastHeader (more codes below)
- C50.3 – Malignant neoplasm of lower-inner quadrant of breastHeader (more codes below)
- C50.4 – Malignant neoplasm of upper-outer quadrant of breastHeader (more codes below)
- C50.5 – Malignant neoplasm of lower-outer quadrant of breastHeader (more codes below)
- C50.6 – Malignant neoplasm of axillary tail of breastHeader (more codes below)
- C50.8 – Malignant neoplasm of overlapping sites of breastHeader (more codes below)
- C50.9 – Malignant neoplasm of breast of unspecified siteHeader (more codes below)
- C50.A – Malignant inflammatory neoplasm of breastHeader (more codes below)
Notes for C50
Includes:
- connective tissue of breast
- Paget's disease of breast
- Paget's disease of nipple
Use additional code:
- code to identify estrogen, and other hormones and factors receptor status (Z17.-)
Frequently asked questions
What is ICD-10 code C50?
C50 is the ICD-10-CM code for malignant neoplasm of breast, in the block C50 (Malignant neoplasms of breast (C50)).
Is C50 a billable code?
No. C50 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.