D05.9Header code — not billable
Unspecified type of carcinoma in situ of breast
- Chapter
- 2. Neoplasms
- Category
- D05
- Effective date
- October 1, 2026
Related codes in category D05
D05Carcinoma in situ of breastD05.0Lobular carcinoma in situ of breastD05.00Lobular carcinoma in situ of unspecified breastYesD05.01Lobular carcinoma in situ of right breastYesD05.02Lobular carcinoma in situ of left breastYesD05.1Intraductal carcinoma in situ of breastD05.10Intraductal carcinoma in situ of unspecified breastYesD05.11Intraductal carcinoma in situ of right breastYesD05.12Intraductal carcinoma in situ of left breastYesD05.8Other specified type of carcinoma in situ of breastD05.80Oth type of carcinoma in situ of unspecified breastYesD05.81Other specified type of carcinoma in situ of right breastYes
Frequently asked questions
What is ICD-10 code D05.9?
D05.9 is an ICD-10-CM diagnosis code for Unspecified type of carcinoma in situ of breast.
Is D05.9 a billable code?
No. D05.9 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is D05.9 in?
D05.9 falls under Chapter 2: Neoplasms.
When did D05.9 become effective?
D05.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to D05.9?
D05.9 belongs to category D05, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.