ICD-10-CM 2027
ICD-10 code for thymoma
Choose a code from the options below based on the documentation.
From the official ICD-10-CM alphabetic index entry “Thymoma”. Page updated September 29, 2026.
About coding thymoma
The official ICD-10-CM index doesn't give a single default code for thymoma; the code depends on the details below.
More specific thymoma codes (official index)
- malignant C37 — Malignant neoplasm of thymus
- metaplastic C37 — Malignant neoplasm of thymus
- microscopic D15.0 — Benign neoplasm of thymus
- sclerosing C37 — Malignant neoplasm of thymus
- type A C37 — Malignant neoplasm of thymus
- type AB C37 — Malignant neoplasm of thymus
- type B1 C37 — Malignant neoplasm of thymus
- type B2 C37 — Malignant neoplasm of thymus
- type B3 C37 — Malignant neoplasm of thymus
Common questions about thymoma ICD-10 codes
What is the ICD-10 code for malignant thymoma?
- C37 — Malignant neoplasm of thymus.
What is the ICD-10 code for metaplastic thymoma?
- C37 — Malignant neoplasm of thymus.
What is the ICD-10 code for microscopic thymoma?
- D15.0 — Benign neoplasm of thymus.
What is the ICD-10 code for sclerosing thymoma?
- C37 — Malignant neoplasm of thymus.
What is the ICD-10 code for type a thymoma?
- C37 — Malignant neoplasm of thymus.
What is the ICD-10 code for type ab thymoma?
- C37 — Malignant neoplasm of thymus.
What is the ICD-10 code for type b1 thymoma?
- C37 — Malignant neoplasm of thymus.