Is ICD-10-CM code C12 billable?

Yes, C12 (Malignant neoplasm of pyriform sinus) is a billable ICD-10-CM diagnosis code, valid for reimbursement on HIPAA-covered transactions for FY2026.

What chapter does ICD-10-CM code C12 belong to?

C12 belongs to Chapter 2 of the ICD-10-CM tabular list: C00–D49 (Neoplasms).

C12

Billable

ChapterC00–D49

Rankcategory

Description

Malignant neoplasm of pyriform sinus

About ICD-10-CM code C12

Malignant neoplasm of pyriform sinus is classified in ICD-10-CM as code C12, part of C00-D49 Neoplasms, within Malignant neoplasms of lip, oral cavity and pharynx (C00-C14). Its status is billable, meaning it is valid for reimbursement claims.

Metadata & Insights

•Billable/specific code (valid for reimbursement).
•Chapter 2: Neoplasms (C00-D49).

Instructional Notes

Includes

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)

Clinical Hierarchy

BillableHas subcodes

CH2Neoplasms (C00-D49)

C00-C14Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)

C12Malignant neoplasm of pyriform sinusBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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