C50
Non-Billable

Malignant neoplasm of breast

Non-Billable / Non-Specific Code

What is Malignant neoplasm of breast?

ICD-10-CM C50 is the diagnosis code for Malignant neoplasm of breast. This code falls under the section "Malignant neoplasms of breast" within Chapter 2 — Neoplasms (C00-D49). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

⛔ Excludes1

Coding Guidelines for C50

⛔ Type 1 Excludes (Never code together)

The following conditions should never be coded at the same time as C50. They are mutually exclusive:

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

ICD-10-CM Code Hierarchy

Understanding where C50 sits in the ICD-10-CM classification helps ensure proper coding:

Current CodeC50 — Malignant neoplasm of breast
Sub-Codes 10 entries
C50.0Malignant neoplasm of nipple and areolaNon-BillableC50.01Malignant neoplasm of nipple and areola, femaleNon-BillableC50.011Malignant neoplasm of nipple and areola, right female breastBillableC50.012Malignant neoplasm of nipple and areola, left female breastBillableC50.019Malignant neoplasm of nipple and areola, unspecified female breastBillableC50.02Malignant neoplasm of nipple and areola, maleNon-BillableC50.021Malignant neoplasm of nipple and areola, right male breastBillableC50.022Malignant neoplasm of nipple and areola, left male breastBillableC50.029Malignant neoplasm of nipple and areola, unspecified male breastBillableC50.1Malignant neoplasm of central portion of breastNon-BillableC50.11Malignant neoplasm of central portion of breast, femaleNon-BillableC50.111Malignant neoplasm of central portion of right female breastBillableC50.112Malignant neoplasm of central portion of left female breastBillableC50.119Malignant neoplasm of central portion of unspecified female breastBillableC50.12Malignant neoplasm of central portion of breast, maleNon-BillableC50.121Malignant neoplasm of central portion of right male breastBillableC50.122Malignant neoplasm of central portion of left male breastBillableC50.129Malignant neoplasm of central portion of unspecified male breastBillableC50.2Malignant neoplasm of upper-inner quadrant of breastNon-BillableC50.21Malignant neoplasm of upper-inner quadrant of breast, femaleNon-BillableC50.211Malignant neoplasm of upper-inner quadrant of right female breastBillableC50.212Malignant neoplasm of upper-inner quadrant of left female breastBillableC50.219Malignant neoplasm of upper-inner quadrant of unspecified female breastBillableC50.22Malignant neoplasm of upper-inner quadrant of breast, maleNon-BillableC50.221Malignant neoplasm of upper-inner quadrant of right male breastBillableC50.222Malignant neoplasm of upper-inner quadrant of left male breastBillableC50.229Malignant neoplasm of upper-inner quadrant of unspecified male breastBillableC50.3Malignant neoplasm of lower-inner quadrant of breastNon-BillableC50.31Malignant neoplasm of lower-inner quadrant of breast, femaleNon-BillableC50.311Malignant neoplasm of lower-inner quadrant of right female breastBillableC50.312Malignant neoplasm of lower-inner quadrant of left female breastBillableC50.319Malignant neoplasm of lower-inner quadrant of unspecified female breastBillableC50.32Malignant neoplasm of lower-inner quadrant of breast, maleNon-BillableC50.321Malignant neoplasm of lower-inner quadrant of right male breastBillableC50.322Malignant neoplasm of lower-inner quadrant of left male breastBillableC50.329Malignant neoplasm of lower-inner quadrant of unspecified male breastBillableC50.4Malignant neoplasm of upper-outer quadrant of breastNon-BillableC50.41Malignant neoplasm of upper-outer quadrant of breast, femaleNon-BillableC50.411Malignant neoplasm of upper-outer quadrant of right female breastBillableC50.412Malignant neoplasm of upper-outer quadrant of left female breastBillableC50.419Malignant neoplasm of upper-outer quadrant of unspecified female breastBillableC50.42Malignant neoplasm of upper-outer quadrant of breast, maleNon-BillableC50.421Malignant neoplasm of upper-outer quadrant of right male breastBillableC50.422Malignant neoplasm of upper-outer quadrant of left male breastBillableC50.429Malignant neoplasm of upper-outer quadrant of unspecified male breastBillableC50.5Malignant neoplasm of lower-outer quadrant of breastNon-BillableC50.51Malignant neoplasm of lower-outer quadrant of breast, femaleNon-BillableC50.511Malignant neoplasm of lower-outer quadrant of right female breastBillableC50.512Malignant neoplasm of lower-outer quadrant of left female breastBillableC50.519Malignant neoplasm of lower-outer quadrant of unspecified female breastBillableC50.52Malignant neoplasm of lower-outer quadrant of breast, maleNon-BillableC50.521Malignant neoplasm of lower-outer quadrant of right male breastBillableC50.522Malignant neoplasm of lower-outer quadrant of left male breastBillableC50.529Malignant neoplasm of lower-outer quadrant of unspecified male breastBillableC50.6Malignant neoplasm of axillary tail of breastNon-BillableC50.61Malignant neoplasm of axillary tail of breast, femaleNon-BillableC50.611Malignant neoplasm of axillary tail of right female breastBillableC50.612Malignant neoplasm of axillary tail of left female breastBillableC50.619Malignant neoplasm of axillary tail of unspecified female breastBillableC50.62Malignant neoplasm of axillary tail of breast, maleNon-BillableC50.621Malignant neoplasm of axillary tail of right male breastBillableC50.622Malignant neoplasm of axillary tail of left male breastBillableC50.629Malignant neoplasm of axillary tail of unspecified male breastBillableC50.8Malignant neoplasm of overlapping sites of breastNon-BillableC50.81Malignant neoplasm of overlapping sites of breast, femaleNon-BillableC50.811Malignant neoplasm of overlapping sites of right female breastBillableC50.812Malignant neoplasm of overlapping sites of left female breastBillableC50.819Malignant neoplasm of overlapping sites of unspecified female breastBillableC50.82Malignant neoplasm of overlapping sites of breast, maleNon-BillableC50.821Malignant neoplasm of overlapping sites of right male breastBillableC50.822Malignant neoplasm of overlapping sites of left male breastBillableC50.829Malignant neoplasm of overlapping sites of unspecified male breastBillableC50.9Malignant neoplasm of breast of unspecified siteNon-BillableC50.91Malignant neoplasm of breast of unspecified site, femaleNon-BillableC50.911Malignant neoplasm of unspecified site of right female breastBillableC50.912Malignant neoplasm of unspecified site of left female breastBillableC50.919Malignant neoplasm of unspecified site of unspecified female breastBillableC50.92Malignant neoplasm of breast of unspecified site, maleNon-BillableC50.921Malignant neoplasm of unspecified site of right male breastBillableC50.922Malignant neoplasm of unspecified site of left male breastBillableC50.929Malignant neoplasm of unspecified site of unspecified male breastBillableC50.AMalignant inflammatory neoplasm of breastNon-BillableC50.A0Malignant inflammatory neoplasm of unspecified breastBillableC50.A1Malignant inflammatory neoplasm of right breastBillableC50.A2Malignant inflammatory neoplasm of left breastBillable
Related Codes

Frequently Asked Questions

Is C50 a billable ICD-10-CM code?

No, C50 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does C50 mean?

C50 is the ICD-10-CM diagnosis code for "Malignant neoplasm of breast". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What section is C50 in?

C50 is located in Section C50 — "Malignant neoplasms of breast" within Chapter 2 of the ICD-10-CM Tabular List.

What are the sub-codes of C50?

C50 has 10 sub-code(s) that provide more specific detail: C50.0, C50.1, C50.2, C50.3, C50.4 and more.

When should I use C50?

Use C50 when the patients documented diagnosis matches "Malignant neoplasm of breast" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Malignant neoplasm of breast?

The ICD-10-CM code for Malignant neoplasm of breast is C50.

Can C50 be used for primary diagnosis?

No, C50 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is C50 in?

C50 is in Chapter 2 of the ICD-10-CM Tabular List.

What conditions are excluded from C50?

Type 1 Excludes for C50 include: skin of breast (C44.501, C44.511, C44.521, C44.591).

Is C50 valid for 2026?

Yes, C50 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousC4A.9Merkel cell carcinoma, unspecifiedNext →C50.0Malignant neoplasm of nipple and areola
Code Details
C50
Malignant neoplasm of breast
Non-Billable / Non-Specific Code
2 — Neoplasms (C00-D49)
C50 — Malignant neoplasms of breast
2026 ICD-10-CM