C37
BillableMalignant neoplasm of thymus
C37 is the ICD-10-CM code for Malignant neoplasm of thymus. It is a billable, specific code valid for reimbursement.
- Status
- Billable
- Chapter
- C00-D49
- Edition
- FY2026
C00-D49 Neoplasms
What this means — in plain language
MedlinePlus · NIHThe 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…
Read more about Thymus Cancer at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Excludes1 — not coded here
- •malignant carcinoid tumor of the thymus (C7A.091)
Frequently asked questions
- What is ICD-10 code C37?
- C37 is the ICD-10-CM code for "Malignant neoplasm of thymus". It falls under C00-D49 Neoplasms.
- Is C37 a billable code?
- Yes — C37 is a billable, specific ICD-10-CM code valid for reimbursement.
- What is excluded from C37?
- Excludes1 (not coded here): malignant carcinoid tumor of the thymus (C7A.091).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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