Neoplm of unsp behav of endo glands and oth prt nervous sys

This code signifies a tumor of an endocrine gland or a component of the nervous system where the pathologist has not yet determined if it is benign or malignant. It represents an unconfirmed neoplastic growth within structures like the pituitary, thyroid, adrenal glands, or parts of the central nervous system.

Use this code when diagnostic workup, such as biopsy or definitive imaging, is pending or inconclusive regarding the tumor's behavior (benign vs. malignant). This code is appropriate when documentation explicitly states "neoplasm of uncertain behavior" or "unspecified behavior" affecting an endocrine gland or nervous system structure, excluding peripheral nerves.

• Do not use this code if the neoplasm's behavior is known (e.g., benign, malignant, in situ); instead, code to the specific behavior.
• Carefully review documentation to differentiate between endocrine glands and peripheral nerves, as D49.2 is an Excludes1.
• Assign a more specific code once pathology results are available confirming benign, malignant, or in situ behavior.