ICD-10-CM Diagnosis Code D04.2 - Carcinoma in situ of skin of ear and external auricular canal (original) (raw)

ICD List 2025-2026 Edition

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3. C00–D49
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5. D04
6. 2026 ICD-10-CM Code D04.2

Carcinoma in situ of skin of ear and external auricular canal

ICD-10-CM Code:

D04.2

ICD-10 Code for:

Ca in situ skin of ear and external auricular canal

Is Billable?

Not Valid for Submission

Code Navigator:

D04.2 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity from the list below for a diagnosis of carcinoma in situ of skin of ear and external auricular canal. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

The following anatomical sites found in the Table of Neoplasms reference this diagnosis code given the correct histological behavior: Neoplasm, neoplastic auditory ; Neoplasm, neoplastic auditory canal (external) (skin) ; Neoplasm, neoplastic auricle, ear [See Also: Neoplasm, skin, ear] ; Neoplasm, neoplastic auricular canal (external) [See Also: Neoplasm, skin, ear] ; Neoplasm, neoplastic canal auditory (external) [See Also: Neoplasm, skin, ear] ; Neoplasm, neoplastic canal auricular (external) [See Also: Neoplasm, skin, ear] ; Neoplasm, neoplastic concha [See Also: Neoplasm, skin, ear] ; etc

Non-specific codes like D04.2 require more digits to indicate the appropriate level of specificity. Consider using any of the following billable codes with a higher level of specificity when coding for ca in situ 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

1. Code Information
2. Specific Coding
3. Tabular List of Diseases and Injuries
4. Table of Neoplasms
5. Patient Education
6. Other Codes Used Similar Conditions
7. Code History

• Neoplasms
  C00–D49
  • In situ neoplasms
    D00-D09
    * Carcinoma in situ of skin
    D04

This code is referenced in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

Filter table of neoplasms:

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.

Anyone can get skin cancer, but it is more common in people who :

• Spend a lot of time in the sun or have been sunburned
• Have light-colored skin, hair and eyes
• Have a family member with skin cancer
• Are over age 50

You should have your doctor check any suspicious skin markings and any changes in the way your skin looks. Treatment is more likely to work well when cancer is found early. If not treated, some types of skin cancer cells can spread to other tissues and organs. Treatments include surgery, radiation therapy, chemotherapy, photodynamic therapy (PDT), and biologic therapy. PDT uses a drug and a type of laser light to kill cancer cells. Biologic therapy boosts your body's own ability to fight cancer.

NIH: National Cancer Institute

[Learn More in MedlinePlus]

• FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026

• FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025

• FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024

• FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023

• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022

• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019

• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018

• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017

• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

• Previous Code: D04.122

• Parent Code: D04

• Next Code: D04.20