2025 ICD-10-CM Diagnosis Code K13.0

Approximate Synonyms

The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.

Clinical Classification

Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.

They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.

Clinical Information

• Cheilitis

  inflammation of the lips. it is of various etiologies and degrees of pathology.

• Melkersson-Rosenthal Syndrome

  an idiopathic syndrome characterized by one or more of the following; recurrent orofacial swelling, relapsing facial paralysis, and fissured tongue (lingua plicata). the onset is usually in childhood and relapses are common. cheilitis granulomatosa is a monosymptomatic variant of this condition. (dermatol clin 1996 apr;14(2):371-9; magalini & magalini, dictionary of medical syndromes, 4th ed, p531)

• Actinic Cheilitis|Actinic Cheilosis|Solar Cheilitis|Solar Cheilosis

  cheilitis due to chronic exposure to ultraviolet (uv) radiation. it may increase the risk for the development of invasive squamous cell carcinoma of the lip.

• Angular Cheilitis|Cheilosis|Cheilosis|Perleche|Perleche|Perlèche

  inflammation of the skin at the corners of the mouth characterized by redness, fissures or crusts.

• Cheilitis

  an inflammatory process affecting the lip.

• Cheilitis, CTCAE|Cheilitis|Cheilitis|Cheilitis

  a disorder characterized by inflammation of the lip.

• Grade 1 Cheilitis, CTCAE|Grade 1 Cheilitis|Grade 1 Cheilitis

  asymptomatic; clinical or diagnostic observations only; intervention not indicated

• Grade 2 Cheilitis, CTCAE|Grade 2 Cheilitis|Grade 2 Cheilitis

  moderate symptoms; limiting instrumental adl

• Grade 3 Cheilitis, CTCAE|Grade 3 Cheilitis|Grade 3 Cheilitis

  severe symptoms; limiting self care adl; intervention indicated

• Cracking at the Corners of the Mouth (Cheilosis/Cheilitis), PRO-CTCAE|Cheilosis/Cheilitis, PRO-CTCAE|Cracking at the corners of the mouth (cheilosis/cheilitis)|PRO-CTCAE, Cracking at the Corners of the Mouth (Cheilosis/Cheilitis)

  cheilosis or cheilitis as recorded on the pro-ctcae questionnaire.

MS-DRG Mapping for ICD-10-CM Code K13.0

Diagnosis-Related Groups (DRGs) are used to classify hospital cases for billing and healthcare management. They help standardize how hospitals and other providers are reimbursed for inpatient care. Patients are grouped based on their principal diagnosis into broader categories called Major Diagnostic Categories (MDCs).

Once assigned to a DRG, the hospital receives a set payment for the patient’s care, regardless of the actual services provided. This fixed rate is intended to cover the typical cost of treating patients within that group. The payment amount depends on the DRG's relative weight, which reflects the expected complexity and cost of care based on the severity of the patient’s condition.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V42.0 applicable from 10/01/2024 through 09/30/2025.

Convert K13.0 to ICD-9-CM

Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

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.