C45 – Mesothelioma
ICD-10-CM 2027 diagnosis code · Malignant neoplasms of mesothelial and soft tissue
ICD-10-CM code
C45
- Code
C45(claims format:C45)- Description
- Mesothelioma
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 2. Neoplasms (C00-D49)
- Block
- C45-C49 Malignant neoplasms of mesothelial and soft tissue
Billable codes under C45
C45 is a header code and cannot be used on claims. Choose the most specific code:
- C45.0 – Mesothelioma of pleuraBillable
- C45.1 – Mesothelioma of peritoneumBillable
- C45.2 – Mesothelioma of pericardiumBillable
- C45.7 – Mesothelioma of other sitesBillable
- C45.9 – Mesothelioma, unspecifiedBillable
Frequently asked questions
What is ICD-10 code C45?
C45 is the ICD-10-CM code for mesothelioma, in the block C45-C49 (Malignant neoplasms of mesothelial and soft tissue).
Is C45 a billable code?
No. C45 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.