Unspecified type of carcinoma in situ of left breast

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 Unspecified carcinoma in situ of left breast
FY2011 Draft description revised draft ~~Unspecified carcinoma in situ of left breast~~ Unspecified type of carcinoma in situ of left breast

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 D05 Carcinoma in situ of breast

Excludes1 - never coded here

carcinoma in situ of skin of breast (D04.5)
malignant neoplasm of breast (C50.-)
melanoma in situ of breast (skin) (D03.5)
Paget's disease of breast or nipple (C50.-)

Inherited from the D00-D09 section In situ neoplasms (D00-D09)

Includes

Bowen's disease
erythroplasia
grade III intraepithelial neoplasia
Queyrat's erythroplasia

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.

Carcinoma-in-situ > breast NOS
Adenocarcinoma-in-situ > breast

Codes in the same group

Code	Description	Status
D05.90	Unspecified type of carcinoma in situ of unspecified breast	Valid
D05.91	Unspecified type of carcinoma in situ of right breast	Valid