ICD-10 Code C40.32 – Malignant neoplasm of short bones of left lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C40.32 – Malignant neoplasm of short bones of left lower limb
What it is
This code identifies a malignant tumor arising in the short bones of the left lower limb, such as the tarsal or other small bones in that region. Use it when the documentation specifies the left side and the primary site is a short bone.
Clinical signs
Findings often include localized pain, swelling, or a palpable mass in the affected area. Imaging and pathology are typically needed to confirm malignancy; clinical features vary, so refer to documentation.
When to use this code
Use C40.32 when the provider documents a primary malignant neoplasm in a short bone of the left lower limb. Apply it for confirmed site-specific cancer diagnoses, including operative, pathology, or oncology notes that clearly identify the left-sided short bone origin.
Do not use for
Do not use this code for benign bone tumors, metastatic disease to the bone, or malignancies in long bones or unspecified sites. If the record does not clearly state the left lower limb short bone, check documentation.
Coding tip
Verify both the anatomic site and laterality in the final diagnosis before assigning C40.32.