D04.121Billable
Carcinoma in situ of skin of left upper eyelid, including canthus
Short description: Ca in situ skin of left upper eyelid, including canthus
- Chapter
- 2. Neoplasms
- Category
- D04
- Effective date
- October 1, 2026
Related codes in category D04
D04Carcinoma in situ of skinD04.0Carcinoma 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 canthusD04.122Ca 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 D04.121?
D04.121 is an ICD-10-CM diagnosis code for Carcinoma in situ of skin of left upper eyelid, including canthus.
Is D04.121 a billable code?
Yes. D04.121 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is D04.121 in?
D04.121 falls under Chapter 2: Neoplasms.
When did D04.121 become effective?
D04.121 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to D04.121?
D04.121 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.