C12
✓ Billable
Malignant neoplasm of pyriform sinus
ICD-10-CM · FY2026 · Neoplasms
Code
C12
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Neoplasms
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Also known as
- Malignant neoplasm of pyriform fossa
Use additional code
- code to identify:
- exposure to environmental tobacco smoke (Z77.22)
- exposure to tobacco smoke in the perinatal period (P96.81)
- history of tobacco dependence (Z87.891)
- occupational exposure to environmental tobacco smoke (Z57.31)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Frequently asked questions
What is ICD-10 code C12?
ICD-10-CM code C12 represents Malignant neoplasm of pyriform sinus. It is a billable diagnosis code in the Neoplasms chapter, effective October 1, 2025 – September 30, 2026.
Is C12 billable?
Yes. C12 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is C12 in?
C12 belongs to the Neoplasms chapter (C00–D49) of ICD-10-CM.
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