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  6. 2025 ICD-10-CM Code K13
Version 2025
Non-Billable Code

2025 ICD-10-CM Diagnosis Code K13

Other diseases of lip and oral mucosa

ICD-10-CM Code:
K13
ICD-10 Code for:
Other diseases of lip and oral mucosa
Is Billable?
Not Valid for Submission
Code Navigator:

Specific Coding Applicable to Other diseases of lip and oral mucosa

Non-specific codes like K13 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for other diseases of lip and oral mucosa:

  • Use K13.0 for Diseases of lips - BILLABLE CODE

  • Use K13.1 for Cheek and lip biting - BILLABLE CODE

  • K13.2 for Leukoplakia and other disturbances of oral epithelium, including tongue - NON-BILLABLE CODE

  • Use K13.21 for Leukoplakia of oral mucosa, including tongue - BILLABLE CODE

  • Use K13.22 for Minimal keratinized residual ridge mucosa - BILLABLE CODE

  • Use K13.23 for Excessive keratinized residual ridge mucosa - BILLABLE CODE

  • Use K13.24 for Leukokeratosis nicotina palati - BILLABLE CODE

  • Use K13.29 for Other disturbances of oral epithelium, including tongue - BILLABLE CODE

  • Use K13.3 for Hairy leukoplakia - BILLABLE CODE

  • Use K13.4 for Granuloma and granuloma-like lesions of oral mucosa - BILLABLE CODE

  • Use K13.5 for Oral submucous fibrosis - BILLABLE CODE

  • Use K13.6 for Irritative hyperplasia of oral mucosa - BILLABLE CODE

  • K13.7 for Other and unspecified lesions of oral mucosa - NON-BILLABLE CODE

  • Use K13.70 for Unspecified lesions of oral mucosa - BILLABLE CODE

  • Use K13.79 for Other lesions of oral mucosa - BILLABLE CODE

Code Classification

  • Diseases of the digestive system
    (K00–K95)
    • Diseases of oral cavity and salivary glands
      (K00-K14)
      • Other diseases of lip and oral mucosa
        (K13)

K13 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other diseases of lip and oral mucosa. The code is not specific and is NOT valid for the year 2025 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Includes

Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • epithelial disturbances of tongue

Use Additional Code

Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
  • code to identify:
  • alcohol abuse and dependence F10
  • exposure to environmental tobacco smoke Z77.22
  • exposure to tobacco smoke in the perinatal period P96.81
  • history of tobacco dependence Z87.891
  • occupational exposure to environmental tobacco smoke Z57.31
  • tobacco dependence F17
  • tobacco use Z72.0

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • certain disorders of gingiva and edentulous alveolar ridge K05 K06
  • cysts of oral region K09
  • diseases of tongue K14
  • stomatitis and related lesions K12

Patient Education


Mouth Disorders

Your mouth is one of the most important parts of your body. It has many different functions. It allows you to:

  • Take in food and drink
  • Breathe in air
  • Start digestion, with your teeth chewing the food you eat and your salivary glands releasing saliva to help break down the food
  • Speak and sing
  • Show emotion, by smiling or pouting

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. If a mouth problem is caused by some other disease, treating that disease can help. It is also important to keep your mouth clean and healthy by brushing, flossing, and not using tobacco.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.