C45.9
C45.9: Mesothelioma, unspecified
Billable / specific codeICD-10-CM
C45.9 is a billable, specific ICD-10-CM code for mesothelioma, unspecified. It is valid for submission on a claim.
Check C45.9 with the rest of the claim: free scrubberOther codes that can never be billed with C45.9
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
C45.9 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 19 Myelodysplastic Syndromes, Multiple Myeloma, and Other Cancers1.798 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.
Medicare coverage
C45.9 is named in 46 Medicare coverage policies: 46 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
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- A52986Billing and Coding: Biomarkers for Oncology
Alphabetic index entries that lead here
- Mesothelioma(malignant)
- Mesothelioma›biphasic
- Mesothelioma›epithelioid
- Mesothelioma›fibrous
- Mesothelioma›site classification›unspecified
Code history
Unchanged in every release from FY2024 to FY2027.