ICD-10 Code C50.822 – Malignant neoplasm of overlapping sites of left male breast (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C50.822 – Malignant neoplasm of overlapping sites of left male breast
What it is
C50.822 identifies a malignant breast tumor in a male patient that spans overlapping sites of the left breast. Use it when documentation shows the cancer involves more than one contiguous left breast location.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include a palpable breast mass, nipple changes, breast pain, or abnormal imaging that supports a malignant process.
When to use this code
Use this code when the provider documents primary breast cancer in the left male breast and specifies overlapping sites rather than a single quadrant or central portion. It also fits pathology or imaging reports describing a lesion crossing adjacent left breast areas. If the site is unclear, check documentation before coding.
Do not use for
Do not use it for benign breast disease, metastatic disease to the breast, or a left breast cancer site that is documented as single, central, or other specific location. Check documentation if the laterality or primary site is uncertain.
Coding tip
Verify both male sex and left-sided overlapping-site wording in the record before assigning C50.822.