Neoplasm of uncertain behavior of other specified sites

This code signifies a neoplasm whose biological behavior cannot be definitively classified as benign or malignant, occurring in a specific anatomical location not covered by more precise codes. It indicates that further diagnostic evaluation is pending or that the pathology report was inconclusive regarding the tumor's malignant potential.

Apply this code when documentation describes a tumor or lesion as "uncertain behavior," "borderline malignancy," or "indeterminate" in a site like the spleen, adrenal gland, or other specified endocrine glands. This is appropriate when the pathology report explicitly states the neoplasm's behavior is uncertain and the site is not covered by more specific codes for uncertain behavior.

• Do not use this code if the pathology definitively states benign or malignant; instead, use the appropriate benign or malignant neoplasm code.
• Ensure the documentation specifies "uncertain behavior" and the exact anatomical site to justify this code.
• Avoid using this code for neoplasms of uncertain behavior of lymphatic and hematopoietic tissues (use 238.7) or other unspecified sites (use 238.9).