ICD-10 Code D17.1 – Benign lipomatous neoplasm of skin and subcutaneous tissue of trunk (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D17.1 – Benign lipomatous neoplasm of skin and subcutaneous tissue of trunk
What it is
This code identifies a benign fatty tumor located in the skin or subcutaneous tissue of the trunk. It is used when the lesion is noncancerous and arises on the chest, back, abdomen, or related trunk areas.
Clinical signs
Typical findings include a soft, mobile, slow-growing mass beneath the skin. Clinical features vary; refer to documentation for location, size, and whether the lesion is symptomatic or incidental.
When to use this code
Use D17.1 when the record clearly documents a benign lipomatous neoplasm in the trunk’s skin or subcutaneous tissue. It may apply after clinical examination, imaging, or pathology confirms a lipoma-type lesion in that site. If the note only says “lipoma” without location, check documentation.
Do not use for
Do not use this code for lipomatous tumors in other body sites, or for malignant soft tissue neoplasms. Check documentation if the lesion is deeper than subcutaneous tissue or if the diagnosis is uncertain.
Coding tip
Confirm both the benign nature and the trunk location before assigning D17.1.