2023

  1. ICD-10-CM Codes
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  2. C00-D49
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  3. D00-D09
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  4. D04-
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  5. 2023 ICD-10-CM Diagnosis Code D04.9

2023 ICD-10-CM Diagnosis Code D04.9

Carcinoma in situ of skin, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • D04.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM D04.9 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of D04.9 - other international versions of ICD-10 D04.9 may differ.
The following code(s) above D04.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to D04.9:
  • C00-D49
    2023 ICD-10-CM Range C00-D49

    Neoplasms

    Note
    • Functional activity
    • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
    • Morphology [Histology]
    • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
    • Primary malignant neoplasms overlapping site boundaries
    • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
    • Malignant neoplasm of ectopic tissue
    • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
    Neoplasms
  • D00-D09
    2023 ICD-10-CM Range D00-D09

    In situ neoplasms

    Includes
    • Bowen's disease
    • erythroplasia
    • grade III intraepithelial neoplasia
    • Queyrat's erythroplasia
    In situ neoplasms
  • D04
    ICD-10-CM Diagnosis Code D04

    Carcinoma in situ of skin

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • erythroplasia of Queyrat (penis) NOS (D07.4)
    • melanoma in situ (D03.-)
    Carcinoma in situ of skin
Approximate Synonyms
  • Basal cell carcinoma in situ
  • Cancer in situ of skin
  • Cancer in situ skin, squamous cell
  • Carcinoma in situ of skin
  • Carcinoma in situ, basal cell
  • Squamous cell carcinoma in situ of skin
Clinical Information
  • Abnormal cells are found in the lower part of the epidermis (the outer layer of the skin). These abnormal cells may become cancer and spread into nearby normal tissue.
  • Stage 0 includes: tis, n0, m0. Tis: carcinoma in situ. N0: no regional lymph node metastasis. M0: no clinical or radiographic evidence of distant metastasis. (ajcc 6th and 7th eds.)
  • Stage 0: tis: carcinoma in situ; n0: no regional lymph node metastasis; m0: no distant metastasis. (based on ajcc cancer staging).
ICD-10-CM D04.9 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 606 Minor skin disorders with mcc
  • 607 Minor skin disorders without mcc

Convert D04.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to D04.9:

ICD-10-CM Codes Adjacent To D04.9
D04.5 Carcinoma in situ of skin of trunk
D04.6 Carcinoma in situ of skin of upper limb, including shoulder
D04.60 Carcinoma in situ of skin of unspecified upper limb, including shoulder
D04.61 Carcinoma in situ of skin of right upper limb, including shoulder
D04.62 Carcinoma in situ of skin of left upper limb, including shoulder
D04.7 Carcinoma in situ of skin of lower limb, including hip
D04.70 Carcinoma in situ of skin of unspecified lower limb, including hip
D04.71 Carcinoma in situ of skin of right lower limb, including hip
D04.72 Carcinoma in situ of skin of left lower limb, including hip
D04.8 Carcinoma in situ of skin of other sites
D04.9 Carcinoma in situ of skin, unspecified
D05 Carcinoma in situ of breast
D05.0 Lobular carcinoma in situ of breast
D05.00 Lobular carcinoma in situ of unspecified breast
D05.01 Lobular carcinoma in situ of right breast
D05.02 Lobular carcinoma in situ of left breast
D05.1 Intraductal carcinoma in situ of breast
D05.10 Intraductal carcinoma in situ of unspecified breast
D05.11 Intraductal carcinoma in situ of right breast
D05.12 Intraductal carcinoma in situ of left breast
D05.8 Other specified type of carcinoma in situ of breast

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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