ICD-10 Code D48.116 – Desmoid tumor of lower extremity and pelvic girdle (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D48.116 – Desmoid tumor of lower extremity and pelvic girdle
What it is
This code identifies a desmoid tumor, also called aggressive fibromatosis, arising in the lower extremity or pelvic girdle. It is a locally invasive soft tissue tumor and does not represent a metastatic cancer.
Clinical signs
Patients may have a firm, slow-growing mass, pain, swelling, or restricted movement near the hip, thigh, buttock, or leg. Clinical features vary; refer to documentation and imaging or pathology findings.
When to use this code
Use D48.116 when the provider documents a desmoid tumor specifically located in the lower extremity or pelvic girdle. You may also use it when pathology or imaging supports that an aggressive fibromatosis is present in that anatomic site.
Confirm the site is not elsewhere in the body and that the diagnosis is not being used only as a rule-out. If laterality or exact site is documented, code the documented diagnosis as written.
Do not use for
Do not use this code for benign lipoma, sarcoma, or an unspecified soft tissue mass. Check documentation if the lesion site is not the lower extremity or pelvic girdle.
Coding tip
Match the code to the documented anatomic location and the confirmed diagnosis; if either is unclear, check documentation.