ICD-10-CM Current in FY 2027

C50.511

Malignant neoplasm of lower-outer quadrant of right female breast

Release: FY 2027
Effective: October 1, 2026

Official source

Hierarchy

Where C50.511 sits in the official hierarchy. Each level is the code it is classified under.

C50 Malignant neoplasm of breast
C50.5 Malignant neoplasm of lower-outer quadrant of breast
C50.51 Parent Malignant neoplasm of lower-outer quadrant of breast, female
C50.511 This code Malignant neoplasm of lower-outer quadrant of right female breast

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Includes

connective tissue of breast

Inherited from C50 — Malignant neoplasm of breast

Includes

Paget's disease of breast

Inherited from C50 — Malignant neoplasm of breast

Includes

Paget's disease of nipple

Inherited from C50 — Malignant neoplasm of breast

Excludes1

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

Inherited from C50 — Malignant neoplasm of breast

Use Additional Code

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

Inherited from C50 — Malignant neoplasm of breast

Version History

How C50.511 appears in each release imported from the official files, newest first.

FY 2027 Effective October 1, 2026
Current

Malignant neoplasm of lower-outer quadrant of right female breast
FY 2026 Effective October 1, 2025
Unchanged

Malignant neoplasm of lower-outer quadrant of right female breast

Other codes under C50.51

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release: FY 2027
Effective: October 1, 2026
Source file: icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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