2026 ICD-10-CM Diagnosis Code D04Carcinoma in situ of skin

ICD-10-CM Codes›C00–D49›D00-D09›D04

ICD-10-CM D04
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D04 is a non-billable ICD-10-CM category code for carcinoma in situ of skin, so it cannot be submitted on claims. Use a more specific code from this category instead, such as D04.0, D04.10, D04.111, and D04.112.

Code Identity

ICD-10-CM Code
D04
Billable Status
No — Non-Billable Category
Code Describes
Carcinoma in situ of skin
Chapter
D00-D09
In situ neoplasms

Code Classification

ChapterC00–D49Neoplasms
SectionD00-D09In situ neoplasms
CategoryD04Carcinoma in situ of skin
This CodeD04Carcinoma in situ of skin

Specific Coding for Carcinoma in situ of skinOverview

Non-specific codes like D04 require more characters. Use one of these billable codes instead:

  • Use D04.0 for Carcinoma in situ of skin of lip

  • D04.1 for Carcinoma in situ of skin of eyelid, including canthus

  • Use D04.10 for Carcinoma in situ of skin of unspecified eyelid, including canthus

  • D04.11 for Carcinoma in situ of skin of right eyelid, including canthus

  • D04.12 for Carcinoma in situ of skin of left eyelid, including canthus

  • D04.2 for Carcinoma in situ of skin of ear and external auricular canal

  • Use D04.20 for Carcinoma in situ of skin of unspecified ear and external auricular canal

  • Use D04.21 for Carcinoma in situ of skin of right ear and external auricular canal

  • Use D04.22 for Carcinoma in situ of skin of left ear and external auricular canal

  • D04.3 for Carcinoma in situ of skin of other and unspecified parts of face

  • Use D04.30 for Carcinoma in situ of skin of unspecified part of face

  • Use D04.39 for Carcinoma in situ of skin of other parts of face

  • Use D04.4 for Carcinoma in situ of skin of scalp and neck

  • Use D04.5 for Carcinoma in situ of skin of trunk

  • D04.6 for Carcinoma in situ of skin of upper limb, including shoulder

  • Use D04.60 for Carcinoma in situ of skin of unspecified upper limb, including shoulder

  • Use D04.61 for Carcinoma in situ of skin of right upper limb, including shoulder

  • Use D04.62 for Carcinoma in situ of skin of left upper limb, including shoulder

  • D04.7 for Carcinoma in situ of skin of lower limb, including hip

  • Use D04.70 for Carcinoma in situ of skin of unspecified lower limb, including hip

  • Use D04.71 for Carcinoma in situ of skin of right lower limb, including hip

  • Use D04.72 for Carcinoma in situ of skin of left lower limb, including hip

  • Use D04.8 for Carcinoma in situ of skin of other sites

  • Use D04.9 for Carcinoma in situ of skin, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • erythroplasia of Queyrat penis NOS D07.4
  • melanoma in situ D03

Patient EducationClinical

Skin Cancer

Skin cancer is the most common form of cancer in the United States. The two most common types are basal cell cancer and squamous cell cancer. They usually form on the head, face, neck, hands, and arms. Another type of skin cancer, melanoma, is more dangerous but less common.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About D04Overview

Is D04 (Carcinoma in situ of skin) a billable code?

No. This is a category header that groups the codes for carcinoma in situ of skin, and headers cannot be submitted on claims. Claims for carcinoma in situ of skin need a more specific code from this category, such as D04.0, D04.10, and D04.111.