ICD-10 Code D17.20 – Benign lipomatous neoplasm of skin and subcutaneous tissue of unspecified limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D17.20 – Benign lipomatous neoplasm of skin and subcutaneous tissue of unspecified limb
What it is
This code identifies a benign fatty tumor in the skin or subcutaneous tissue of an unspecified limb. It applies when the lesion is documented as lipomatous and the limb site is not further specified.
Clinical signs
Typical findings include a soft, slow-growing, usually painless mass under the skin. Clinical features vary; refer to documentation, especially if the lesion is mobile, well circumscribed, or causing local discomfort.
When to use this code
Use D17.20 when the provider documents a benign lipomatous neoplasm in the skin or subcutaneous tissue of a limb, but does not specify arm or leg. It is appropriate for outpatient, imaging, pathology, or problem-list documentation that supports a benign fatty tumor. If laterality or exact limb site is documented, code that detail instead.
Do not use for
Do not use this code for malignant soft tissue tumors, liposarcoma, or nonspecific lumps without a documented benign lipomatous diagnosis. Check documentation if the lesion is elsewhere than a limb.
Coding tip
Confirm the note supports both benign lipomatous nature and unspecified limb location before assigning D17.20.