ICD-10 Code C40.82 – Malignant neoplasm of overlapping sites of bone and articular cartilage of left limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C40.82 – Malignant neoplasm of overlapping sites of bone and articular cartilage of left limb
What it is
This code identifies a malignant tumor arising in bone or articular cartilage of the left limb when the lesion spans overlapping sites and cannot be assigned to one specific bone location. Use it for documented primary malignancy in that anatomic region.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include localized pain, swelling, a palpable mass, or imaging evidence of an aggressive bone lesion with extension across adjacent structures.
When to use this code
Use C40.82 when the provider documents a primary malignant neoplasm of overlapping sites of bone and articular cartilage in the left limb. It is appropriate when the record shows the tumor involves more than one contiguous site and laterality is left. Check documentation if the exact bone site is unclear.
Do not use for
Do not use this code for benign bone tumors, metastatic disease to bone, or malignancies in the right limb or unspecified limb. If the documentation does not confirm an overlapping-site primary malignancy, check documentation.
Coding tip
Verify both laterality and the “overlapping sites” wording in the pathology or imaging report before assigning C40.82.