C78.31 – Secondary malignant neoplasm of larynx
ICD-10-CM 2027 diagnosis code · Malignant neoplasms of ill-defined, other secondary and unspecified sites
ICD-10-CM code
C78.31
- Code
C78.31(claims format:C7831)- Description
- Secondary malignant neoplasm of larynx
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 2. Neoplasms (C00-D49)
- Block
- C76-C80 Malignant neoplasms of ill-defined, other secondary and unspecified sites
- Parent codes
- C78 › C78.3
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
C78 – Secondary malignant neoplasm of respiratory and digestive organs
Excludes1 (not coded here):
Excludes2 (not included here):
- lymph node metastases (C77.0)
Related codes in C78.3
Frequently asked questions
What is ICD-10 code C78.31?
C78.31 is the ICD-10-CM code for secondary malignant neoplasm of larynx, in the block C76-C80 (Malignant neoplasms of ill-defined, other secondary and unspecified sites).
Is C78.31 a billable code?
Yes. C78.31 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does C78.31 belong to?
It belongs to category C78 – Secondary malignant neoplasm of respiratory and digestive organs.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.