Malignant neoplasm of overlapping sites of floor of mouth

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.

FY2007 Added to the draft code set draft Malignant neoplasm of overlapping sites of floor of mouth

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 C04 Malignant neoplasm of floor of mouth

Use additional code

code to identify:
alcohol abuse and dependence (F10.-)
history of tobacco dependence (Z87.891)
tobacco dependence (F17.-)
tobacco use (Z72.0)

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.

Neoplasm, neoplastic > mouth > floor > overlapping lesion

Codes in the same group

Code	Description	Status
C04.0	Malignant neoplasm of anterior floor of mouth	Valid
C04.1	Malignant neoplasm of lateral floor of mouth	Valid
C04.9	Malignant neoplasm of floor of mouth, unspecified	Valid