2024 ICD-10-CM Diagnosis Code C44.521

by

Squamous cell carcinoma of skin of breast

  • C44.521 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM C44.521 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C44.521 – other international versions of ICD-10 C44.521 may differ.

The following code(s) above C44.521 contain annotation back-references

 that may be applicable to C44.521:

  • C00-D49  Neoplasms
  • C44  Other and unspecified malignant neoplasm of skin
  • C44.5  Other and unspecified malignant neoplasm of skin of trunk

Approximate Synonyms

  • Primary squamous cell carcinoma of skin of bilateral breasts
  • Primary squamous cell carcinoma of skin of left breast
  • Primary squamous cell carcinoma of skin of right breast
  • Squamous cell carcinoma, skin of bilateral breasts
  • Squamous cell carcinoma, skin of left breast
  • Squamous cell carcinoma, skin of right breast

ICD-10-CM C44.521 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 606 Minor skin disorders with mcc
  • 607 Minor skin disorders without mcc

Convert C44.521 to ICD-9-CMCode 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
  • 2024 (effective 10/1/2023): No change

Code annotations containing back-references to C44.521:

  • Type 1 Excludes: C50