2021 ICD-10-CM Code D04

Carcinoma in situ of skin

Version 2021

Not Valid for Submission

D04 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of carcinoma in situ of skin. The code is not specific and is NOT valid for the year 2021 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.

ICD-10:D04
Short Description:Carcinoma in situ of skin
Long Description:Carcinoma in situ of skin

Code Classification

Specific Coding for Carcinoma in situ of skin

Non-specific codes like D04 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for carcinoma in situ of skin:

  • BILLABLE CODE - Use D04.0 for Carcinoma in situ of skin of lip
  • NON-BILLABLE CODE - D04.1 for Carcinoma in situ of skin of eyelid, including canthus
  • BILLABLE CODE - Use D04.10 for Carcinoma in situ of skin of unspecified eyelid, including canthus
  • NON-BILLABLE CODE - D04.11 for Carcinoma in situ of skin of right eyelid, including canthus
  • NON-BILLABLE CODE - D04.12 for Carcinoma in situ of skin of left eyelid, including canthus
  • NON-BILLABLE CODE - D04.2 for Carcinoma in situ of skin of ear and external auricular canal
  • BILLABLE CODE - Use D04.20 for Carcinoma in situ of skin of unspecified ear and external auricular canal
  • BILLABLE CODE - Use D04.21 for Carcinoma in situ of skin of right ear and external auricular canal
  • BILLABLE CODE - Use D04.22 for Carcinoma in situ of skin of left ear and external auricular canal
  • NON-BILLABLE CODE - D04.3 for Carcinoma in situ of skin of other and unspecified parts of face
  • BILLABLE CODE - Use D04.30 for Carcinoma in situ of skin of unspecified part of face
  • BILLABLE CODE - Use D04.39 for Carcinoma in situ of skin of other parts of face
  • BILLABLE CODE - Use D04.4 for Carcinoma in situ of skin of scalp and neck
  • BILLABLE CODE - Use D04.5 for Carcinoma in situ of skin of trunk
  • NON-BILLABLE CODE - D04.6 for Carcinoma in situ of skin of upper limb, including shoulder
  • BILLABLE CODE - Use D04.60 for Carcinoma in situ of skin of unspecified upper limb, including shoulder
  • BILLABLE CODE - Use D04.61 for Carcinoma in situ of skin of right upper limb, including shoulder
  • BILLABLE CODE - Use D04.62 for Carcinoma in situ of skin of left upper limb, including shoulder
  • NON-BILLABLE CODE - D04.7 for Carcinoma in situ of skin of lower limb, including hip
  • BILLABLE CODE - Use D04.70 for Carcinoma in situ of skin of unspecified lower limb, including hip
  • BILLABLE CODE - Use D04.71 for Carcinoma in situ of skin of right lower limb, including hip
  • BILLABLE CODE - Use D04.72 for Carcinoma in situ of skin of left lower limb, including hip
  • BILLABLE CODE - Use D04.8 for Carcinoma in situ of skin of other sites
  • BILLABLE CODE - Use D04.9 for Carcinoma in situ of skin, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code D04:


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Information for Patients


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

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]

Code History

  • 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 (First year ICD-10-CM implemented into the HIPAA code set)