ICD-10 Diagnosis Code K12

Stomatitis and related lesions

Diagnosis Code K12

ICD-10: K12
Short Description: Stomatitis and related lesions
Long Description: Stomatitis and related lesions
This is the 2017 version of the ICD-10-CM diagnosis code K12

Not Valid for Submission
The code K12 is a "header" and not valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the digestive system (K00–K93)
    • Diseases of oral cavity and salivary glands (K00-K14)
      • Stomatitis and related lesions (K12)

Information for Medical Professionals

Index of Diseases and Injuries
References found for the code K12 in the Index of Diseases and Injuries:


Information for Patients


Mouth Disorders

Your mouth is one of the most important parts of your body. Any problem that affects your mouth can make it hard to eat, drink or even smile.

Some common mouth problems include

  • Cold sores - painful sores on the lips and around the mouth, caused by a virus
  • Canker sores - painful sores in the mouth, caused by bacteria or viruses
  • Thrush - a yeast infection that causes white patches in your mouth
  • Leukoplakia - white patches of excess cell growth on the cheeks, gums or tongue, common in smokers
  • Dry mouth - a lack of enough saliva, caused by some medicines and certain diseases
  • Gum or tooth problems
  • Bad breath

Treatment for mouth disorders varies, depending on the problem. Keeping a clean mouth by brushing and flossing often is important.

  • Burning Mouth Syndrome - NIH (National Institute of Dental and Craniofacial Research)
  • Drooling (Medical Encyclopedia)
  • Gum biopsy (Medical Encyclopedia)
  • Herpangina (Medical Encyclopedia)
  • Leukoplakia (Medical Encyclopedia)
  • Lichen planus (Medical Encyclopedia)
  • Mouth sores (Medical Encyclopedia)
  • Mouth ulcers (Medical Encyclopedia)
  • Mucous cyst (Medical Encyclopedia)
  • Perioral dermatitis (Medical Encyclopedia)
  • Thrush (Medical Encyclopedia)


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