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ICD-10-CM Codes
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C00-D49
Neoplasms
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C45-C49
Malignant neoplasms of mesothelial and soft tissue
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C45-
Mesothelioma
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2022 ICD-10-CM Diagnosis Code C45.9
2022 ICD-10-CM Diagnosis Code C45.9
Mesothelioma, unspecified
2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
- C45.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2022 edition of ICD-10-CM C45.9 became effective on October 1, 2021.
- This is the American ICD-10-CM version of C45.9 - other international versions of ICD-10 C45.9 may differ.
The following code(s) above
C45.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
C45.9:
Approximate Synonyms
- Cancer, mesothelioma
- Mesothelioma (malignant, clinical disorder)
Clinical Information
- A benign (noncancerous) or malignant (cancerous) tumor affecting the lining of the chest or abdomen. Exposure to asbestos particles in the air increases the risk of developing malignant mesothelioma.
- A benign or malignant tumor affecting the lining of the chest or abdomen
- A neoplasm originating from mesothelial cells of the pleura or peritoneum, for which the malignancy status has not been established.
- A tumor derived from mesothelial tissue (peritoneum, pleura, pericardium). It appears as broad sheets of cells, with some regions containing spindle-shaped, sarcoma-like cells and other regions showing adenomatous patterns. Pleural mesotheliomas have been linked to exposure to asbestos. (Dorland, 27th ed)
- A usually malignant and aggressive neoplasm of the mesothelium which is often associated with exposure to asbestos.
- Malignant tumor derived from mesothelial tissues of peritoneum, pleura, and pericardium.
- The tissue that lines your lungs, stomach, heart and other organs is called mesothelium. Mesothelioma is cancer of that tissue. It is a rare but serious type of cancer. It usually starts in the lungs, but can also start in the abdomen or other organs. Most people who develop mesothelioma have worked on jobs where they inhaled asbestos particles. It can take a long time - 30 to 50 years - between being around asbestos and getting the disease. Treatment includes surgery, radiation, chemotherapy or all three. nih: national cancer institute
ICD-10-CM C45.9 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
- 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 C45.9 to ICD-9-CM
Code 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
ICD-10-CM Codes Adjacent To C45.9
C44.9 Other and unspecified malignant neoplasm of skin, unspecified
C44.90 Unspecified malignant neoplasm of skin, unspecified
C44.91 Basal cell carcinoma of skin, unspecified
C44.92 Squamous cell carcinoma of skin, unspecified
C44.99 Other specified malignant neoplasm of skin, unspecified
C45.0 Mesothelioma of pleura
C45.1 Mesothelioma of peritoneum
C45.2 Mesothelioma of pericardium
C45.7 Mesothelioma of other sites
C45.9
Mesothelioma, unspecified
C46.0 Kaposi's sarcoma of skin
C46.1 Kaposi's sarcoma of soft tissue
C46.2 Kaposi's sarcoma of palate
C46.3 Kaposi's sarcoma of lymph nodes
C46.4 Kaposi's sarcoma of gastrointestinal sites
C46.5 Kaposi's sarcoma of lung
C46.50 Kaposi's sarcoma of unspecified lung
C46.51 Kaposi's sarcoma of right lung
C46.52 Kaposi's sarcoma of left lung
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.