ICD-10-CM 2027 diagnosis code

D04Carcinoma in situ of skin

Not billable — use a more specific code

D04 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About D04

D04 is the ICD-10-CM diagnosis code for carcinoma in situ of skin. It belongs to 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 10 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: D04.0 (of lip), D04.1 (of eyelid, including canthus), D04.2 (of ear and external auricular canal), D04.3 (of other and unspecified parts of face), D04.4 (of scalp and neck), D04.5 (of trunk), D04.6 (of upper limb, including shoulder), D04.7 (of lower limb, including hip) and 2 more.

Don't report D04 together with the conditions in its Excludes1 note: erythroplasia of Queyrat (penis) NOS (D07.4) and melanoma in situ (D03.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under D04

Coding notes

Excludes1Not coded here — never report together with this code

erythroplasia of Queyrat (penis) NOS (D07.4)
melanoma in situ (D03.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to D04.

Broader instructions also apply from D00-D09 In situ neoplasms and Chapter 2: Neoplasms.

Code history

2016
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2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about D04

Is D04 billable?: No. D04 is a header code. Report one of its more specific subcodes instead.