ICD-10 Diagnosis Code C04

Malignant neoplasm of floor of mouth

Diagnosis Code C04

ICD-10: C04
Short Description: Malignant neoplasm of floor of mouth
Long Description: Malignant neoplasm of floor of mouth
This is the 2018 version of the ICD-10-CM diagnosis code C04

Not Valid for Submission
The code C04 is a "header" and not valid for submission for HIPAA-covered transactions.

Code Classification
  • Neoplasms (C00–D48)
    • Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
      • Malignant neoplasm of floor of mouth (C04)

Information for Medical Professionals

Index of Diseases and Injuries
References found for the code C04 in the Index of Diseases and Injuries:


    Information for Patients


    Oral Cancer

    Oral cancer can form in any part of the mouth. Most oral cancers begin in the flat cells that cover the surfaces of your mouth, tongue, and lips. Anyone can get oral cancer, but the risk is higher if you are male, use tobacco, drink lots of alcohol, have HPV, or have a history of head or neck cancer. Frequent sun exposure is also a risk factor for lip cancer.

    Symptoms of oral cancer include

    • White or red patches in your mouth
    • A mouth sore that won't heal
    • Bleeding in your mouth
    • Loose teeth
    • Problems or pain with swallowing
    • A lump in your neck
    • An earache

    Tests to diagnose oral cancer include a physical exam, endoscopy, biopsy, and imaging tests. Oral cancer treatments may include surgery, radiation therapy, and chemotherapy. Some patients have a combination of treatments.

    NIH: National Cancer Institute

    • Head and Neck Radiation Treatment and Your Mouth - NIH (National Institute of Dental and Craniofacial Research)
    • Leukoplakia (Medical Encyclopedia)
    • Oral cancer (Medical Encyclopedia)
    • Oral Cancer - NIH (National Institute of Dental and Craniofacial Research)
    • Swallowing problems (Medical Encyclopedia)
    • Tongue biopsy (Medical Encyclopedia)
    • Understanding Chemotherapy - NIH - Easy-to-Read (National Cancer Institute)
    • What to Know about External Beam Radiation Therapy - NIH - Easy-to-Read (National Cancer Institute)


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