Secondary and unsp malignant neoplasm of lymph node, unsp

This code signifies the presence of a metastatic cancer in a lymph node, where the primary site of the cancer is either unknown or not specified in the medical record. It indicates that the lymph node involvement is secondary to a malignancy originating elsewhere in the body.

This code is appropriate when documentation confirms metastatic disease to a lymph node, but the primary cancer site is not identified or is pending further investigation. It is also used when the medical record explicitly states "secondary malignant neoplasm of lymph node, unspecified."

• Avoid using this code if the primary site of the malignancy is known; instead, code the secondary site along with the primary site.
• Do not use this code for primary lymphoma or other primary lymph node malignancies.
• Query the provider for clarification if the documentation is unclear regarding the primary site or if "unspecified" is used without justification.