ICD-10 Code D17.9 – Benign lipomatous neoplasm, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D17.9 – Benign lipomatous neoplasm, unspecified
What it is
D17.9 identifies a benign fatty tumor when the record does not specify a more exact site. Use it for a lipoma or similar lipomatous growth documented as benign and unspecified.
Clinical signs
These lesions are usually slow-growing, soft, and mobile under the skin. Clinical features vary; refer to documentation, and confirm that the provider describes a benign lipomatous neoplasm rather than another soft-tissue mass.
When to use this code
Use D17.9 when the provider documents a benign lipomatous neoplasm but does not name the anatomic location. It also fits when the note says lipoma or benign fatty tumor without further specificity. If the site is documented, choose the more specific code instead.
Do not use for
Do not use this code for malignant liposarcoma or for nonspecific soft-tissue lumps without documentation of a benign lipomatous neoplasm. Check documentation if the lesion type or site is unclear.
Coding tip
Look for the exact pathology or provider wording, because a documented site usually supports a more specific D17 code.