2021

  1. ICD-10-CM Codes
    2. ›
  2. C00-D49 Neoplasms
    3. ›
  3. C43-C4A Melanoma and other malignant neoplasms of skin
    4. ›
  4. C44- Other and unspecified malignant neoplasm of skin
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code C44.721

2021 ICD-10-CM Diagnosis Code C44.721

Squamous cell carcinoma of skin of unspecified lower limb, including hip

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • C44.721 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Squamous cell carcinoma skin/ unsp lower limb, including hip
  • The 2021 edition of ICD-10-CM C44.721 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of C44.721 - other international versions of ICD-10 C44.721 may differ.
The following code(s) above C44.721 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 C44.721:
  • C00-D49
    2021 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 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
ICD-10-CM C44.721 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 606 Minor skin disorders with mcc
  • 607 Minor skin disorders without mcc

Convert C44.721 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
ICD-10-CM Codes Adjacent To C44.721
C44.7 Other and unspecified malignant neoplasm of skin of lower limb, including hip
C44.70 Unspecified malignant neoplasm of skin of lower limb, including hip
C44.701 Unspecified malignant neoplasm of skin of unspecified lower limb, including hip
C44.702 Unspecified malignant neoplasm of skin of right lower limb, including hip
C44.709 Unspecified malignant neoplasm of skin of left lower limb, including hip
C44.71 Basal cell carcinoma of skin of lower limb, including hip
C44.711 Basal cell carcinoma of skin of unspecified lower limb, including hip
C44.712 Basal cell carcinoma of skin of right lower limb, including hip
C44.719 Basal cell carcinoma of skin of left lower limb, including hip
C44.72 Squamous cell carcinoma of skin of lower limb, including hip
C44.721 Squamous cell carcinoma of skin of unspecified lower limb, including hip
C44.722 Squamous cell carcinoma of skin of right lower limb, including hip
C44.729 Squamous cell carcinoma of skin of left lower limb, including hip
C44.79 Other specified malignant neoplasm of skin of lower limb, including hip
C44.791 Other specified malignant neoplasm of skin of unspecified lower limb, including hip
C44.792 Other specified malignant neoplasm of skin of right lower limb, including hip
C44.799 Other specified malignant neoplasm of skin of left lower limb, including hip
C44.8 Other and unspecified malignant neoplasm of overlapping sites of skin
C44.80 Unspecified malignant neoplasm of overlapping sites of skin
C44.81 Basal cell carcinoma of overlapping sites of skin
C44.82 Squamous cell carcinoma of overlapping sites of 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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