C45.1
BillableMesothelioma of peritoneum
C45.1 is the ICD-10-CM code for Mesothelioma of peritoneum. It is a billable, specific code valid for reimbursement.
C00-D49 Neoplasms
What this means — in plain language
MedlinePlus · NIHThe tissue that lines your lungs, stomach, heart, and other organs is called mesothelium. Mesothelioma, also known as malignant mesothelioma, is cancer of that tissue. It usually starts in the lungs, but can also start in the abdomen or other organs. Malignant mesothelioma is rare but serious. Most people who get it have worked or lived in places where they inhaled or swallowed asbestos particles. After being…
Read more about Mesothelioma at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •Mesothelioma of cul-de-sac
- •Mesothelioma of mesentery
- •Mesothelioma of mesocolon
- •Mesothelioma of omentum
- •Mesothelioma of peritoneum (parietal) (pelvic)
Excludes1 — not coded here
- •other malignant neoplasm of soft tissue of peritoneum (C48.-)
Medications indicated for this condition
FDA labeling- PemetrexedFolate Analog Metabolic Inhibitor [EPC]›
- IpilimumabCTLA-4-directed Blocking Antibody [EPC]›
- PembrolizumabProgrammed Death Receptor-1 Blocking Antibody [EPC]›
- Pembrolizumab and Berahyaluronidase Alfa-pmphEndoglycosidase [EPC]›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
- What is ICD-10 code C45.1?
- C45.1 is the ICD-10-CM code for "Mesothelioma of peritoneum". It falls under C00-D49 Neoplasms.
- Is C45.1 a billable code?
- Yes — C45.1 is a billable, specific ICD-10-CM code valid for reimbursement.
- What is excluded from C45.1?
- Excludes1 (not coded here): other malignant neoplasm of soft tissue of peritoneum (C48.-).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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