ICD-10-CM 2027 diagnosis code
D04.12Carcinoma in situ of skin of left eyelid, including canthus
D04.12 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.
Code last changed in FY2019 (effective October 1, 2018). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About D04.12
D04.12 is the ICD-10-CM diagnosis code for carcinoma in situ of skin of left eyelid, including canthus. It belongs to category D04 (carcinoma in situ of skin), block D00-D09 (in situ neoplasms) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.
Within D04.1 (carcinoma in situ of skin of eyelid, including canthus), D04.12 is specifically for carcinoma in situ of skin of left eyelid, including canthus. Related codes cover unspecified eyelid, including canthus (D04.10) and right eyelid, including canthus (D04.11).
To report this condition, pick the subcode that matches the documentation: D04.121 (canthus) and D04.122 (canthus).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2019 (expanded into subcodes).
Before ICD-10, this condition was coded in ICD-9-CM as 232.1 (carcinoma in situ of eyelid, including canthus).
Specific codes under D04.12
Notes that apply from higher levels
Instructions written at a parent level also apply to D04.12.
Broader instructions also apply from D00-D09 In situ neoplasms and Chapter 2: Neoplasms.
ICD-9-CM equivalent
Converter →- 232.1Carcinoma in situ of eyelid, including canthusapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- FY2019 (effective 10/1/2018): Expanded — no longer billable