C50.521 – Malignant neoplasm of lower-outer quadrant of right male breast

ICD-10-CM 2027 diagnosis code · Malignant neoplasms of breast (C50)

Billable code

ICD-10-CM code C50.521

Code: C50.521 (claims format: C50521)
Description: Malignant neoplasm of lower-outer quadrant of right male breast
Short description: Malig neoplasm of lower-outer quadrant of right male breast
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 2. Neoplasms (C00-D49)
Block: C50 Malignant neoplasms of breast (C50)
Parent codes: C50 › C50.5 › C50.52

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

C50 – Malignant neoplasm of breast

Includes:

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

Excludes1 (not coded here):

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

Use additional code:

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

Related codes in C50.52

Frequently asked questions

What is ICD-10 code C50.521?

C50.521 is the ICD-10-CM code for malignant neoplasm of lower-outer quadrant of right male breast, in the block C50 (Malignant neoplasms of breast (C50)).

Is C50.521 a billable code?

Yes. C50.521 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does C50.521 belong to?

It belongs to category C50 – Malignant neoplasm of breast.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.