ICD-10-CM › C00-D49 › C76-C80 › C78.0 Secondary malignant neoplasm of lung › C78.00

C78.00

Secondary malignant neoplasm of unspecified lung

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2007 Added to the draft code set draft Secondary malignant neoplasm of lung , unspecified side
  2. FY2010 Draft description revised draft Secondary malignant neoplasm of lung , unspecified side Secondary malignant neoplasm of lung, unspecified side
  3. FY2011 Draft description revised draft Secondary malignant neoplasm of lung, unspecified side Secondary malignant neoplasm of unspecified lung

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from C78 Secondary malignant neoplasm of respiratory and digestive organs

Excludes1 - never coded here

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

Excludes2 - not included here

  • lymph node metastases (C77.0)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
C78.01 Secondary malignant neoplasm of right lung Valid
C78.02 Secondary malignant neoplasm of left lung Valid