2024 ICD-10-CM Diagnosis Code K13.70

Unspecified lesions of oral mucosa

ICD-10-CM Code:
K13.70
ICD-10 Code for:
Unspecified lesions of oral mucosa
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

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)

K13.70 is a billable diagnosis code used to specify a medical diagnosis of unspecified lesions of oral mucosa. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like K13.70 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Disease of mouth
  • Disorder of oral mucous membrane
  • Drug-induced oral condition
  • Fixed drug reaction
  • Fixed drug reaction affecting oral mucous membranes
  • Impaired oral mucous membrane
  • Impaired tissue integrity
  • Infectious disease of oral mucosa
  • Iron pigmentation of oral mucosa
  • Lesion of oral mucosa
  • Oral cavity problem
  • Oral cavity, dental and salivary gland disorder
  • Oral lesion
  • Oral lesion co-occurrent with reactive arthritis triad
  • Pigmented oral mucosal lesion
  • Reactive arthritis of spine
  • Reactive arthritis triad
  • Skin and mucous membrane disorder of mouth, lips and tongue
  • Swelling of oral cavity structure

Clinical Classification

Clinical CategoryCCSR Category CodeInpatient Default CCSROutpatient Default CCSR
Any dental condition including traumatic injuryDEN001N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.
Diseases of mouth; excluding dentalDIG003Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.
Nontraumatic dental conditionsDEN002N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert K13.70 to ICD-9-CM

  • ICD-9-CM Code: 528.9 - Oral soft tissue dis NEC
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

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.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.