Merkel cell carcinoma of unspecified eyelid, including canthus

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 2010 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.

FY2010 Added to the draft code set draft Merkel cell carcinoma of eyelid, including canthus, unspecified side
FY2011 Draft description revised draft ~~Merkel cell carcinoma of eyelid, including canthus, unspecified side~~ Merkel cell carcinoma of unspecified eyelid, including canthus

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.

Merkel cell tumor
Tumor > Merkel cell
Carcinoma > Merkel cell > canthus
Carcinoma > Merkel cell > eyelid, including canthus

Codes in the same group

Code	Description	Status
C4A.11	Merkel cell carcinoma of right eyelid, including canthus	Not billable
C4A.12	Merkel cell carcinoma of left eyelid, including canthus	Not billable