Code edition

UpcomingOct 1, 2026 – Sep 30, 2027

C78.31UpcomingBillable / specific

Secondary malignant neoplasm of larynx

C78 · Inherited instructions

Excludes 1

secondary carcinoid tumors of liver (C7B.02)
secondary carcinoid tumors of peritoneum (C7B.04)

Excludes 2 · 1

C78 · Secondary malignant neoplasm of respiratory and digestive organs

Excludes 2

lymph node metastases (C77.0)

Claims & coverage

Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.

Official coding guidelines → · CMS ↗

Check Medicare coverage ↗

First observed · 2026-10-01

Code history

Latest recorded change · FY2027

ChangedUnchanged

FY2027UpcomingSelected edition

Effective from 2026-10-01

Added

Secondary malignant neoplasm of larynx

Billable diagnosis code

CDC/NCHS · FY2027

All editions (1)

All editions	Effective from	Code history
FY2027	2026-10-01	Added

Code-level instructions

The official Tabular List has no additional instructions at this code level.

Review the instructions inherited from its parent categories below. Inherited instructions ↓

Review the official coding guidelines ↗

Inherited instructions

Chapters 2 · Neoplasms (C00-D49)

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).

C78 · Secondary malignant neoplasm of respiratory and digestive organs

Excludes 1

secondary carcinoid tumors of liver (C7B.02)
secondary carcinoid tumors of peritoneum (C7B.04)

Excludes 2

lymph node metastases (C77.0)

Official index references (31)

Neoplasm, neoplastic (31)

Official conversion history

Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.

Release dates 2026-10-01

Previous assignment: C78.39

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
C78.30	Secondary malignant neoplasm of unspecified respiratory organ	Billable / specific
C78.32	Secondary malignant neoplasm of pharynx	Billable / specific
C78.39	Secondary malignant neoplasm of other respiratory organs	Billable / specific

Official titles and instructions are preserved in their source language. Official sources ↗