ICD-10-CM C45 is the diagnosis code for Mesothelioma. This code falls under the section "Malignant neoplasms of mesothelial and soft tissue" within Chapter 2 — Neoplasms (C00-D49). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where C45 sits in the ICD-10-CM classification helps ensure proper coding:
No, C45 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
C45 is the ICD-10-CM diagnosis code for "Mesothelioma". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
C45 is located in Section C45-C49 — "Malignant neoplasms of mesothelial and soft tissue" within Chapter 2 of the ICD-10-CM Tabular List.
C45 has 5 sub-code(s) that provide more specific detail: C45.0, C45.1, C45.2, C45.7, C45.9.
Use C45 when the patients documented diagnosis matches "Mesothelioma" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Mesothelioma is C45.
No, C45 is non-billable. Use a more specific sub-code for primary diagnosis billing.
C45 is in Chapter 2 of the ICD-10-CM Tabular List.
Yes, C45 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.