C50

Non-billable

Malignant neoplasm of breast

C50 is the ICD-10-CM code for Malignant neoplasm of breast. It is a non-billable category code — use a more specific child code such as C50.0 for billing.

Status
Header (non-billable)
Chapter
C00-D49
Subcodes
10
Edition
FY2026

C00-D49 Neoplasms

What this means — in plain language

MedlinePlus · NIH

What is breast cancer? Breast cancer is a cancer that starts in breast tissue. It happens when cells in the breast change and grow out of control. New cells grow even when you don't need them, and old cells don't die when they should. These extra cells can form a mass called a tumor. Sometimes the cancer does not spread any further. This is called "in situ." If the cancer spreads outside the breast, the cancer is…

Read more about Breast Cancer at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • connective tissue of breast
  • Paget's disease of breast
  • Paget's disease of nipple

Excludes1 — not coded here

Use additional code

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

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Frequently asked questions

What is ICD-10 code C50?
C50 is the ICD-10-CM code for "Malignant neoplasm of breast". It falls under C00-D49 Neoplasms.
Is C50 a billable code?
No — C50 is a non-billable header code. Use a more specific child code (such as C50.0) for billing.
What are the subcodes of C50?
C50 has 10 more specific child codes, including C50.0, C50.1, C50.2.
What is excluded from C50?
Excludes1 (not coded here): skin of breast (C44.501, C44.511, C44.521, C44.591).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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