C77.4Billable
Secondary and unspecified malignant neoplasm of inguinal and lower limb lymph nodes
Short description: Sec and unsp malig neoplasm of inguinal and lower limb nodes
- Chapter
- 2. Neoplasms
- Category
- C77
- Effective date
- October 1, 2026
Related codes in category C77
C77Secondary and unspecified malignant neoplasm of lymph nodesC77.0Sec and unsp malig neoplasm of nodes of head, face and neckYesC77.1Secondary and unsp malignant neoplasm of intrathorac nodesYesC77.2Secondary and unsp malignant neoplasm of intra-abd nodesYesC77.3Sec and unsp malig neoplasm of axilla and upper limb nodesYesC77.5Secondary and unsp malignant neoplasm of intrapelv nodesYesC77.8Sec and unsp malig neoplasm of nodes of multiple regionsYesC77.9Secondary and unsp malignant neoplasm of lymph node, unspYes
Frequently asked questions
What is ICD-10 code C77.4?
C77.4 is an ICD-10-CM diagnosis code for Secondary and unspecified malignant neoplasm of inguinal and lower limb lymph nodes.
Is C77.4 a billable code?
Yes. C77.4 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is C77.4 in?
C77.4 falls under Chapter 2: Neoplasms.
When did C77.4 become effective?
C77.4 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to C77.4?
C77.4 belongs to category C77, which includes 8 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.