D04Header code — not billable
Carcinoma in situ of skin
- Chapter
- 2. Neoplasms
- Category
- D04
- Effective date
- October 1, 2026
Related codes in category D04
D04.0Carcinoma in situ of skin of lipYesD04.1Carcinoma in situ of skin of eyelid, including canthusD04.10Carcinoma in situ of skin of unsp eyelid, including canthusYesD04.11Carcinoma in situ of skin of right eyelid, including canthusD04.111Ca in situ skin of right upper eyelid, including canthusYesD04.112Ca in situ skin of right lower eyelid, including canthusYesD04.12Carcinoma in situ of skin of left eyelid, including canthusD04.121Ca in situ skin of left upper eyelid, including canthusYesD04.122Ca in situ skin of left lower eyelid, including canthusYesD04.2Ca in situ skin of ear and external auricular canalD04.20Ca in situ skin of unsp ear and external auricular canalYesD04.21Ca in situ skin of right ear and external auricular canalYes
Frequently asked questions
What is ICD-10 code D04?
D04 is an ICD-10-CM diagnosis code for Carcinoma in situ of skin.
Is D04 a billable code?
No. D04 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 D04 in?
D04 falls under Chapter 2: Neoplasms.
When did D04 become effective?
D04 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to D04?
D04 belongs to category D04, 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.