MCMedicalCodingSoftware
C78.3

C78.3: Secondary malignant neoplasm of other and unspecified respiratory organs

Non-billable headerICD-10-CM

C78.3 is a non-billable header ICD-10-CM code for secondary malignant neoplasm of other and unspecified respiratory organs. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above C78.3

A category’s note binds every code beneath it.

Written on C78: Secondary malignant neoplasm of respiratory and digestive organs

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

Excludes2 inherited from the categories above C78.3

Not part of this code, but both may be coded when both are present.

Written on C78: Secondary malignant neoplasm of respiratory and digestive organs

  • lymph node metastases (C77.0)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead C78.3

4 child codes. Green means billable.

Other codes under C78

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.