C04

Non-Billable
ChapterC00–D49
Rankcategory
Official Description

Malignant neoplasm of floor of mouth

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 2: Neoplasms (C00-D49).

Instructional Notes

Use Additional Code
  • code to identify:
  • alcohol abuse and dependence (F10.-)
  • history of tobacco dependence (Z87.891)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

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
C04.1Malignant neoplasm of lateral floor of mouth
C04.8Malignant neoplasm of overlapping sites of floor of mouth
C04.9Malignant neoplasm of floor of mouth, unspecified

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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