ICD-10 Code D21.5 – Benign neoplasm of connective and other soft tissue of pelvis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D21.5 – Benign neoplasm of connective and other soft tissue of pelvis
What it is
This code identifies a noncancerous growth arising from connective or other soft tissues in the pelvic region. It indicates a benign tumor located in pelvic soft tissue, not a malignant neoplasm.
Clinical signs
Clinical features vary; refer to documentation. Pelvic soft tissue masses may be found on imaging, examination, or pathology, and may cause local pressure, pain, or be asymptomatic.
When to use this code
Use D21.5 when the provider documents a benign neoplasm of pelvic connective tissue or other soft tissue. Apply it after a confirmed diagnosis, such as imaging or biopsy-supported benign tumor in the pelvis.
Use the code when the record clearly identifies the pelvic site and benign nature. Check documentation if the mass is only suspected, if the site is different, or if pathology is not definitive.
Do not use for
Do not use this code for malignant pelvic tumors, unspecified soft tissue masses, or lesions outside the pelvis. If the documentation does not confirm a benign neoplasm, check documentation.
Coding tip
Confirm both the benign behavior and pelvic location in the provider’s note before assigning D21.5.