C00.4

Billable
ChapterC00–D49
Ranksubcategory
Official Description

Malignant neoplasm of lower lip, inner aspect

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 buccal aspect of lower lip
  • Malignant neoplasm of frenulum of lower lip
  • Malignant neoplasm of mucosa of lower lip
  • Malignant neoplasm of oral aspect of lower lip
General instructions are available for the parent sections:
View C00 Notes

Clinical Hierarchy

CH2Neoplasms (C00-D49)
C00-C14Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
C00Malignant neoplasm of lip
C00.4Malignant neoplasm of lower lip, inner aspect

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to C00.4:

categoryC00
Malignant neoplasm of lip
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to C00.4. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

2 raw paths
Neoplasm, neoplastic2 unique routes
lip(2 variants)
internal
lower→C00.4
lower
internal→C00.4

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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