2023

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

2023 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
  • C44 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2023 edition of ICD-10-CM C44 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of C44 - other international versions of ICD-10 C44 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as C44. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • Kaposi's sarcoma of skin (
    ICD-10-CM Diagnosis Code C46.0

    Kaposi's sarcoma of skin

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    C46.0
    )
  • malignant melanoma of skin (
    ICD-10-CM Diagnosis Code C43
    • C43 Malignant melanoma of skin
      • C43.0 Malignant melanoma of lip
      • C43.1 Malignant melanoma of eyelid, including canth...
        • C43.10 Malignant melanoma of unspecified eyelid, inc...
        • C43.11 Malignant melanoma of right eyelid, including...
          • C43.111 Malignant melanoma of right upper eyelid, inc...
          • C43.112 Malignant melanoma of right lower eyelid, inc...
        • C43.12 Malignant melanoma of left eyelid, including ...
          • C43.121 Malignant melanoma of left upper eyelid, incl...
          • C43.122 Malignant melanoma of left lower eyelid, incl...
      • C43.2 Malignant melanoma of ear and external auricu...
        • C43.20 Malignant melanoma of unspecified ear and ext...
        • C43.21 Malignant melanoma of right ear and external ...
        • C43.22 Malignant melanoma of left ear and external a...
      • C43.3 Malignant melanoma of other and unspecified p...
        • C43.30 Malignant melanoma of unspecified part of fac...
        • C43.31 Malignant melanoma of nose
        • C43.39 Malignant melanoma of other parts of face
      • C43.4 Malignant melanoma of scalp and neck
      • C43.5 Malignant melanoma of trunk
        • C43.51 Malignant melanoma of anal skin
        • C43.52 Malignant melanoma of skin of breast
        • C43.59 Malignant melanoma of other part of trunk
      • C43.6 Malignant melanoma of upper limb, including s...
        • C43.60 Malignant melanoma of unspecified upper limb,...
        • C43.61 Malignant melanoma of right upper limb, inclu...
        • C43.62 Malignant melanoma of left upper limb, includ...
      • C43.7 Malignant melanoma of lower limb, including h...
        • C43.70 Malignant melanoma of unspecified lower limb,...
        • C43.71 Malignant melanoma of right lower limb, inclu...
        • C43.72 Malignant melanoma of left lower limb, includ...
      • C43.8 Malignant melanoma of overlapping sites of sk...
      • C43.9 Malignant melanoma of skin, unspecified
    C43.-
    )
  • malignant neoplasm of skin of genital organs (
    ICD-10-CM Diagnosis Code C51

    Malignant neoplasm of vulva

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • carcinoma in situ of vulva (D07.1)
    C51
    -
    ICD-10-CM Diagnosis Code C52

    Malignant neoplasm of vagina

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Female Dx
    Type 1 Excludes
    • carcinoma in situ of vagina (D07.2)
    C52
    ,
    ICD-10-CM Diagnosis Code C60
    • C60 Malignant neoplasm of penis
      • C60.0 Malignant neoplasm of prepuce
      • C60.1 Malignant neoplasm of glans penis
      • C60.2 Malignant neoplasm of body of penis
      • C60.8 Malignant neoplasm of overlapping sites of pe...
      • C60.9 Malignant neoplasm of penis, unspecified
    C60.-
    ,
    ICD-10-CM Diagnosis Code C63.2

    Malignant neoplasm of scrotum

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Male Dx
    Applicable To
    • Malignant neoplasm of skin of scrotum
    C63.2
    )
  • Merkel cell carcinoma (
    ICD-10-CM Diagnosis Code C4A
    • C4A Merkel cell carcinoma
      • C4A.0 Merkel cell carcinoma of lip
      • C4A.1 Merkel cell carcinoma of eyelid, including ca...
        • C4A.10 Merkel cell carcinoma of unspecified eyelid, ...
        • C4A.11 Merkel cell carcinoma of right eyelid, includ...
          • C4A.111 Merkel cell carcinoma of right upper eyelid, ...
          • C4A.112 Merkel cell carcinoma of right lower eyelid, ...
        • C4A.12 Merkel cell carcinoma of left eyelid, includi...
          • C4A.121 Merkel cell carcinoma of left upper eyelid, i...
          • C4A.122 Merkel cell carcinoma of left lower eyelid, i...
      • C4A.2 Merkel cell carcinoma of ear and external aur...
        • C4A.20 Merkel cell carcinoma of unspecified ear and ...
        • C4A.21 Merkel cell carcinoma of right ear and extern...
        • C4A.22 Merkel cell carcinoma of left ear and externa...
      • C4A.3 Merkel cell carcinoma of other and unspecifie...
        • C4A.30 Merkel cell carcinoma of unspecified part of ...
        • C4A.31 Merkel cell carcinoma of nose
        • C4A.39 Merkel cell carcinoma of other parts of face
      • C4A.4 Merkel cell carcinoma of scalp and neck
      • C4A.5 Merkel cell carcinoma of trunk
        • C4A.51 Merkel cell carcinoma of anal skin
        • C4A.52 Merkel cell carcinoma of skin of breast
        • C4A.59 Merkel cell carcinoma of other part of trunk
      • C4A.6 Merkel cell carcinoma of upper limb, includin...
        • C4A.60 Merkel cell carcinoma of unspecified upper li...
        • C4A.61 Merkel cell carcinoma of right upper limb, in...
        • C4A.62 Merkel cell carcinoma of left upper limb, inc...
      • C4A.7 Merkel cell carcinoma of lower limb, includin...
        • C4A.70 Merkel cell carcinoma of unspecified lower li...
        • C4A.71 Merkel cell carcinoma of right lower limb, in...
        • C4A.72 Merkel cell carcinoma of left lower limb, inc...
      • C4A.8 Merkel cell carcinoma of overlapping sites
      • C4A.9 Merkel cell carcinoma, unspecified
    C4A.-
    )
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • malignant neoplasm of sebaceous glands
  • malignant neoplasm of sweat glands
The following code(s) above C44 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:
  • 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
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
Code annotations containing back-references to C44:
  • Type 1 Excludes: C76
    ICD-10-CM Diagnosis Code C76

    Malignant neoplasm of other and ill-defined sites

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • malignant neoplasm of female genitourinary tract NOS (C57.9)
    • malignant neoplasm of male genitourinary tract NOS (C63.9)
    • malignant neoplasm of lymphoid, hematopoietic and related tissue (C81-C96)
    • malignant neoplasm of skin (C44.-)
    • malignant neoplasm of unspecified site NOS (C80.1)
  • Applicable To: Z85.828
    ICD-10-CM Diagnosis Code Z85.828

    Personal history of other malignant neoplasm of skin

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
    Applicable To
    • Conditions classifiable to C44
ICD-10-CM Codes Adjacent To C44
C4A.6 Merkel cell carcinoma of upper limb, including shoulder
C4A.60 Merkel cell carcinoma of unspecified upper limb, including shoulder
C4A.61 Merkel cell carcinoma of right upper limb, including shoulder
C4A.62 Merkel cell carcinoma of left upper limb, including shoulder
C4A.7 Merkel cell carcinoma of lower limb, including hip
C4A.70 Merkel cell carcinoma of unspecified lower limb, including hip
C4A.71 Merkel cell carcinoma of right lower limb, including hip
C4A.72 Merkel cell carcinoma of left lower limb, including hip
C4A.8 Merkel cell carcinoma of overlapping sites
C4A.9 Merkel cell carcinoma, unspecified
C44 Other and unspecified malignant neoplasm of skin
C44.0 Other and unspecified malignant neoplasm of skin of lip
C44.00 Unspecified malignant neoplasm of skin of lip
C44.01 Basal cell carcinoma of skin of lip
C44.02 Squamous cell carcinoma of skin of lip
C44.09 Other specified malignant neoplasm of skin of lip
C44.1 Other and unspecified malignant neoplasm of skin of eyelid, including canthus
C44.10 Unspecified malignant neoplasm of skin of eyelid, including canthus
C44.101 Unspecified malignant neoplasm of skin of unspecified eyelid, including canthus
C44.102 Unspecified malignant neoplasm of skin of right eyelid, including canthus
C44.1021 Unspecified malignant neoplasm of skin of right upper eyelid, including canthus

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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