2023

  1. ICD-10-CM Codes
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  2. C00-D49
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  3. C43-C4A
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  4. C44-
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  5. 2023 ICD-10-CM Diagnosis Code C44.509

2023 ICD-10-CM Diagnosis Code C44.509

Unspecified malignant neoplasm of skin of other part of trunk

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • C44.509 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Unsp malignant neoplasm of skin of other part of trunk
  • The 2023 edition of ICD-10-CM C44.509 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of C44.509 - other international versions of ICD-10 C44.509 may differ.
The following code(s) above C44.509 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 C44.509:
  • 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
  • C44
    ICD-10-CM Diagnosis Code C44

    Other and unspecified malignant neoplasm of skin

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Includes
    • malignant neoplasm of sebaceous glands
    • malignant neoplasm of sweat glands
    Type 1 Excludes
    • Kaposi's sarcoma of skin (C46.0)
    • malignant melanoma of skin (C43.-)
    • malignant neoplasm of skin of genital organs (C51-C52, C60.-, C63.2)
    • Merkel cell carcinoma (C4A.-)
    Other and unspecified malignant neoplasm of skin
  • C44.5
    ICD-10-CM Diagnosis Code C44.5

    Other and unspecified malignant neoplasm of skin of trunk

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Other and unspecified malignant neoplasm of skin of trunk
Approximate Synonyms
  • Cancer of chest
  • Cancer of the skin, trunk
  • Leiomyosarcoma of skin of chest
  • Primary malignant neoplasm of skin of back
  • Primary malignant neoplasm of skin of chest wall
  • Primary malignant neoplasm of skin of trunk
  • Skin cancer, back
  • Skin cancer, chest wall
ICD-10-CM C44.509 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 606 Minor skin disorders with mcc
  • 607 Minor skin disorders without mcc

Convert C44.509 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
ICD-10-CM Codes Adjacent To C44.509
C44.399 Other specified malignant neoplasm of skin of other parts of face
C44.4 Other and unspecified malignant neoplasm of skin of scalp and neck
C44.40 Unspecified malignant neoplasm of skin of scalp and neck
C44.41 Basal cell carcinoma of skin of scalp and neck
C44.42 Squamous cell carcinoma of skin of scalp and neck
C44.49 Other specified malignant neoplasm of skin of scalp and neck
C44.5 Other and unspecified malignant neoplasm of skin of trunk
C44.50 Unspecified malignant neoplasm of skin of trunk
C44.500 Unspecified malignant neoplasm of anal skin
C44.501 Unspecified malignant neoplasm of skin of breast
C44.509 Unspecified malignant neoplasm of skin of other part of trunk
C44.51 Basal cell carcinoma of skin of trunk
C44.510 Basal cell carcinoma of anal skin
C44.511 Basal cell carcinoma of skin of breast
C44.519 Basal cell carcinoma of skin of other part of trunk
C44.52 Squamous cell carcinoma of skin of trunk
C44.520 Squamous cell carcinoma of anal skin
C44.521 Squamous cell carcinoma of skin of breast
C44.529 Squamous cell carcinoma of skin of other part of trunk
C44.59 Other specified malignant neoplasm of skin of trunk
C44.590 Other specified malignant neoplasm of anal skin

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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