ICD-10-CM C77: Secondary and unspecified malignant neoplasm of lymph nodes

ICD-10-CM Diagnosis Code (2025)

Official Description for C77

Secondary and unspecified malignant neoplasm of lymph nodes

Coding Notes & Guidelines for C77

Excludes1: Not Coded Here
  • malignant neoplasm of lymph nodes, specified as primary (C81-C86, C88, C96.-)
  • mesentary metastasis of carcinoid tumor (C7B.04)
  • secondary carcinoid tumors of distant lymph nodes (C7B.01)
Inclusion Terms

Secondary and unspecified malignant neoplasm of supraclavicular lymph nodes

Inclusion Terms

Secondary and unspecified malignant neoplasm of pectoral lymph nodes

Child Codes (More Specific Codes for C77):

C77.0 - Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck C77.1 - Secondary and unspecified malignant neoplasm of intrathoracic lymph nodes C77.2 - Secondary and unspecified malignant neoplasm of intra-abdominal lymph nodes C77.3 - Secondary and unspecified malignant neoplasm of axilla and upper limb lymph nodes C77.4 - Secondary and unspecified malignant neoplasm of inguinal and lower limb lymph nodes C77.5 - Secondary and unspecified malignant neoplasm of intrapelvic lymph nodes C77.8 - Secondary and unspecified malignant neoplasm of lymph nodes of multiple regions C77.9 - Secondary and unspecified malignant neoplasm of lymph node, unspecified

About ICD-10-CM Code C77 (Secondary and unspecified malignant neoplasm of lymph nodes)

ICD-10-CM code C77 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM C77 became effective on October 1, 2024.

This page provides detailed information about C77 - Secondary and unspecified malignant neoplasm of lymph nodes. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Secondary and unspecified malignant neoplasm of lymph nodes.