C50.229 Malignant neoplasm of upper-inner quadrant of unspecified male breast

The ICD-10-CM code for Malignant neoplasm of upper-inner quadrant of unspecified male breast is C50.229 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

2: Neoplasms (C00-D49)

Section

C50: Malignant neoplasms of breast (C50)

Category C50

86 codes (57 billable)

FY2026 Status

Stable since FY2024

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool