2024 ICD-10-CM Diagnosis Code C37

by

Malignant neoplasm of thymus

  • C37 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 C37 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C37 – other international versions of ICD-10 C37 may differ.

Type 1 Excludes

  • malignant carcinoid tumor of the thymus (C7A.091)

The following code(s) above C37 contain annotation back-references

 that may be applicable to C37:

  • C00-D49  Neoplasms
  • C30-C39  Malignant neoplasms of respiratory and intrathoracic organs

Approximate Synonyms

  • Cancer of the thymus
  • Cancer of the thymus, small cell
  • Cancer of the thymus, squamous cell
  • Cancer of the thymus, thymoma
  • Malignant thymoma
  • Primary malignant neoplasm of thymus
  • Primary small cell neoplasm of thymus
  • Primary squamous cell carcinoma of thymus

Clinical Information

  • Primary or metastatic malignant neoplasm involving the thymus. This category includes malignant thymomas, thymic lymphomas, primary thymic carcinomas, and metastatic carcinomas from other anatomic sites.
  • The thymus is a small organ in your upper chest, under your breastbone. Before birth and during childhood, the thymus helps the body make a type of white blood cell. These cells help protect you from infections. Cancer of the thymus is rare. You are more likely to get it if you have other diseases such as myasthenia gravis, lupus or rheumatoid arthritis. Sometimes there are no symptoms. Other times, thymus cancer can cause
    • a cough that doesn’t go away
    • chest pain
    • trouble breathing
    the most common treatment is surgery to remove the tumor. Other options include radiation and hormone therapy. nih: national cancer institute

ICD-10-CM C37 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 826 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures with mcc
  • 827 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures with cc
  • 828 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures without cc/mcc
  • 829 Myeloproliferative disorders or poorly differentiated neoplasms with other procedures with cc/mcc
  • 830 Myeloproliferative disorders or poorly differentiated neoplasms with other procedures without cc/mcc
  • 843 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses with mcc
  • 844 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses with cc
  • 845 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses without cc/mcc

Convert C37 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 C37:

Diagnosis Index entries containing back-references to C37: