ICD-10 Code C69.82 – Malignant neoplasm of overlapping sites of left eye and adnexa (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C69.82 – Malignant neoplasm of overlapping sites of left eye and adnexa
What it is
This code identifies a malignant tumor involving overlapping parts of the left eye and its adnexal structures. Use it when the record shows cancer spanning more than one listed site, and no single site is documented as primary.
Clinical signs
Clinical features vary; refer to documentation. Findings may include a documented mass, lesion, or tumor affecting overlapping left ocular or adnexal structures, with pathology or specialist assessment confirming malignancy.
When to use this code
Use C69.82 when the provider documents a malignant neoplasm of overlapping sites in the left eye and adnexa, such as involvement crossing site boundaries. It is appropriate when the chart does not support a more specific left-eye or adnexal site code. Check documentation for laterality and exact anatomic extent.
Do not use for
Do not use this code for benign, in situ, or uncertain neoplasms, or when the tumor is limited to one specific left ocular site. If the documentation names a single site, code that site instead.
Coding tip
Confirm that the provider documents both left-sided involvement and overlapping anatomic sites before assigning C69.82.