U.S. ICD-10-CM · FY 2027

C50 ICD-10-CM Code: Malignant neoplasm of breast

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

C50

Malignant neoplasm of breast

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where C50 sits

  1. 1

    Chapter 2

    Neoplasms (C00-D49)

  2. 2

    Section

    Malignant neoplasms of breast (C50)

  3. 3

    Category C50

    Malignant neoplasm of breast

  4. 4

    Code C50

    Malignant neoplasm of breast

More specific choices

Codes under C50

C50 is a non-billable category. Choose the child code that best matches the documented diagnosis.

C50.0

Malignant neoplasm of nipple and areola

C50.1

Malignant neoplasm of central portion of breast

C50.2

Malignant neoplasm of upper-inner quadrant of breast

C50.3

Malignant neoplasm of lower-inner quadrant of breast

C50.4

Malignant neoplasm of upper-outer quadrant of breast

C50.5

Malignant neoplasm of lower-outer quadrant of breast

C50.6

Malignant neoplasm of axillary tail of breast

C50.8

Malignant neoplasm of overlapping sites of breast

C50.9

Malignant neoplasm of breast of unspecified site

C50.A

Malignant inflammatory neoplasm of breast

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for C50.

Code first

No “code first” instruction is listed for C50.

Use additional code

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

Excludes1

Conditions that should not be reported together with this code.

  • skin of breast (C44.501, C44.511, C44.521, C44.591)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for C50.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code C50 mean?

C50 is the FY 2027 U.S. ICD-10-CM code for “Malignant neoplasm of breast.”

Is C50 a billable or specific ICD-10-CM code?

No. C50 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is C50 located in ICD-10-CM?

C50 is listed in Chapter 2, Neoplasms (C00-D49), within Malignant neoplasms of breast (C50) (C50–C50), under category C50, Malignant neoplasm of breast.

What coding notes are listed for C50?

No inclusion terms are listed for C50 in this reference record. No code-first instruction is listed. Additional-code instructions: code to identify estrogen, and other hormones and factors receptor status (Z17.-). Excludes1 notes: skin of breast (C44.501, C44.511, C44.521, C44.591). No Excludes2 note is listed.

Ready to transform your clinical documentation?

Join Vero and see how effortless documentation can be.

Try for free

  • No credit card required

  • Cancel anytime