Desmoid tumor of other site

This code signifies a desmoid tumor, also known as an aggressive fibromatosis, occurring in an anatomical location not specifically classified elsewhere. These are rare, locally invasive, non-metastasizing soft tissue tumors arising from musculoaponeurotic structures. They can infiltrate surrounding tissues but do not spread to distant sites.

Use this code when documentation specifies a desmoid tumor located in an area such as the head and neck, extremities, or retroperitoneum, and no more specific ICD-10-CM code exists for that particular site. Documentation should clearly state "desmoid tumor" or "aggressive fibromatosis" and the affected anatomical region.

• Ensure the documentation explicitly identifies the tumor as a "desmoid tumor" or "aggressive fibromatosis" to differentiate it from other benign or malignant soft tissue neoplasms.
• Verify that the tumor's location is not better described by a more specific desmoid tumor code (e.g., D48.111 for abdominal wall, D48.113 for intrathoracic).
• Code the specific anatomical site of the desmoid tumor as an additional diagnosis if further specificity is available and clinically relevant.