C04 ICD-10-CM Code: Malignant neoplasm of floor of mouth
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
C04Malignant neoplasm of floor of mouth
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where C04 sits
- 1
Chapter 2
Neoplasms (C00-D49)
- 2
Section
Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
- 3
Category C04
Malignant neoplasm of floor of mouth
- 4
Code C04
Malignant neoplasm of floor of mouth
More specific choices
Codes under C04
C04 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for C04.
Code first
No “code first” instruction is listed for C04.
Use additional code
- code to identify:
- alcohol abuse and dependence (F10.-)
- history of tobacco dependence (Z87.891)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for C04.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for C04.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code C04 mean?
C04 is the FY 2027 U.S. ICD-10-CM code for “Malignant neoplasm of floor of mouth.”
Is C04 a billable or specific ICD-10-CM code?
No. C04 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is C04 located in ICD-10-CM?
C04 is listed in Chapter 2, Neoplasms (C00-D49), within Malignant neoplasms of lip, oral cavity and pharynx (C00-C14) (C00–C14), under category C04, Malignant neoplasm of floor of mouth.
What coding notes are listed for C04?
No inclusion terms are listed for C04 in this reference record. No code-first instruction is listed. Additional-code instructions: code to identify:; alcohol abuse and dependence (F10.-); history of tobacco dependence (Z87.891); tobacco dependence (F17.-); tobacco use (Z72.0). No Excludes1 note is listed. No Excludes2 note is listed.
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