C31.1
BillableMalignant neoplasm of ethmoidal sinus
C31.1 is the ICD-10-CM code for Malignant neoplasm of ethmoidal sinus. It is a billable, specific code valid for reimbursement.
C00-D49 Neoplasms
What this means — in plain language
MedlinePlus · NIHYour paranasal sinuses are small hollow spaces around the nose. They are lined with cells that make mucus, which keeps your nose from drying out. The nasal cavity is the passageway just behind your nose. Air passes through it on the way to your throat as you breathe. Cancer of the nasal cavity and paranasal sinuses is rare. You are at greater risk if you are: Male and over 40 years old Exposed to certain workplace…
Read more about Nasal Cancer at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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