2021

  1. ICD-10-CM Codes
    2. ›
  2. C00-D49 Neoplasms
    3. ›
  3. C76-C80 Malignant neoplasms of ill-defined, other secondary and unspecified sites
    4. ›
  4. C77- Secondary and unspecified malignant neoplasm of lymph nodes
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code C77.9

2021 ICD-10-CM Diagnosis Code C77.9

Secondary and unspecified malignant neoplasm of lymph node, unspecified

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • C77.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Secondary and unsp malignant neoplasm of lymph node, unsp
  • The 2021 edition of ICD-10-CM C77.9 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of C77.9 - other international versions of ICD-10 C77.9 may differ.
The following code(s) above C77.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to C77.9:
  • C00-D49
    2021 ICD-10-CM Range C00-D49

    Neoplasms

    Note
    • Functional activity
    • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
    • Morphology [Histology]
    • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
    • Primary malignant neoplasms overlapping site boundaries
    • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
    • Malignant neoplasm of ectopic tissue
    • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
    Neoplasms
  • C77
    ICD-10-CM Diagnosis Code C77

    Secondary and unspecified malignant neoplasm of lymph nodes

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • 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)
    Secondary and unspecified malignant neoplasm of lymph nodes
Approximate Synonyms
  • Breast cancer metastatic to lymph node
  • Cancer metastatic to lymph node, adenocarcinoma
  • Cancer metastatic to lymph node, small cell
  • Cancer metastatic to lymph node, squamous cell
  • Cancer metastatic to lymph nodes
  • Cancer metastatic to lymph nodes undiffer lg cell
  • Female breast cancer metastatic to lymph node
  • Male breast cancer metastatic to lymph node
  • Melanoma eye, metastatic to lung
  • Melanoma, metastatic to lymph node
  • Metastasis to lymph node from adenocarcinoma
  • Metastasis to lymph node from squamous cell carcinoma
  • Secondary adenocarcinoma of lymph node
  • Secondary malignant melanoma of lung from eye
  • Secondary malignant melanoma of lymph node
  • Secondary malignant neoplasm of lymph node
  • Secondary malignant neoplasm of lymph node from neoplasm of breast
  • Secondary malignant neoplasm of lymph node from neoplasm of female breast
  • Secondary malignant neoplasm of lymph node from neoplasm of male breast
  • Secondary small cell cancer of lymph node
  • Secondary squamous cell carcinoma of lymph node
  • Secondary undifferentiated large cell malignant neoplasm of lymph node
Clinical Information
  • The spread of cancer to and establishment in the lymph nodes
ICD-10-CM C77.9 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 820 Lymphoma and leukemia with major o.r. Procedures with mcc
  • 821 Lymphoma and leukemia with major o.r. Procedures with cc
  • 822 Lymphoma and leukemia with major o.r. Procedures without cc/mcc
  • 823 Lymphoma and non-acute leukemia with other procedures with mcc
  • 824 Lymphoma and non-acute leukemia with other procedures with cc
  • 825 Lymphoma and non-acute leukemia with other procedures without cc/mcc
  • 840 Lymphoma and non-acute leukemia with mcc
  • 841 Lymphoma and non-acute leukemia with cc
  • 842 Lymphoma and non-acute leukemia without cc/mcc

Convert C77.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To C77.9
C76.52 Malignant neoplasm of left lower limb
C76.8 Malignant neoplasm of other specified ill-defined sites
C77 Secondary and unspecified malignant neoplasm of lymph nodes
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
C78 Secondary malignant neoplasm of respiratory and digestive organs
C78.0 Secondary malignant neoplasm of lung
C78.00 Secondary malignant neoplasm of unspecified lung
C78.01 Secondary malignant neoplasm of right lung
C78.02 Secondary malignant neoplasm of left lung
C78.1 Secondary malignant neoplasm of mediastinum
C78.2 Secondary malignant neoplasm of pleura
C78.3 Secondary malignant neoplasm of other and unspecified respiratory organs
C78.30 Secondary malignant neoplasm of unspecified respiratory organ
C78.39 Secondary malignant neoplasm of other respiratory organs

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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