C04.0

Billable

ChapterC00–D49

Ranksubcategory

Official Description

Malignant neoplasm of anterior floor of mouth

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 2: Neoplasms (C00-D49).

Instructional Notes

Includes

Malignant neoplasm of anterior to the premolar-canine junction

General instructions are available for the parent sections:

View C04 Notes

Clinical Hierarchy

CH2Neoplasms (C00-D49)

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

C04Malignant neoplasm of floor of mouth

C04.0Malignant neoplasm of anterior floor of mouth

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to C04.0:

categoryC04

Malignant neoplasm of floor of mouth

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to C04.0. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

1 raw paths

Neoplasm, neoplastic1 unique routes

mouth

floor

anterior portion→C04.0

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Malignant neoplasm of anterior floor of mouth.

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