2019 ICD-10-CM Diagnosis Code K12.1

Other forms of stomatitis

    2016 2017 2018 2019 Billable/Specific Code
  • K12.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM K12.1 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of K12.1 - other international versions of ICD-10 K12.1 may differ.
Applicable To
  • Stomatitis NOS
  • Denture stomatitis
  • Ulcerative stomatitis
  • Vesicular stomatitis
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as K12.1. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • acute necrotizing ulcerative stomatitis (
    ICD-10-CM Diagnosis Code A69.1

    Other Vincent's infections

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Fusospirochetal pharyngitis
    • Necrotizing ulcerative (acute) gingivitis
    • Necrotizing ulcerative (acute) gingivostomatitis
    • Spirochetal stomatitis
    • Trench mouth
    • Vincent's angina
    • Vincent's gingivitis
    A69.1
    )
  • Vincent's stomatitis (
    ICD-10-CM Diagnosis Code A69.1

    Other Vincent's infections

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Fusospirochetal pharyngitis
    • Necrotizing ulcerative (acute) gingivitis
    • Necrotizing ulcerative (acute) gingivostomatitis
    • Spirochetal stomatitis
    • Trench mouth
    • Vincent's angina
    • Vincent's gingivitis
    A69.1
    )
The following code(s) above K12.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to K12.1:
  • K00-K95
    2019 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the digestive system
  • K12
    ICD-10-CM Diagnosis Code K12

    Stomatitis and related lesions

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • cancrum oris (A69.0)
    • cheilitis (K13.0)
    • gangrenous stomatitis (A69.0)
    • herpesviral [herpes simplex] gingivostomatitis (B00.2)
    • noma (A69.0)
    Use Additional
    • 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)
    Stomatitis and related lesions
Approximate Synonyms
  • Stomatitis
  • Stomatitis (inflammation of mouth)
Clinical Information
  • A disorder characterized by inflammation of the oral mucosal.
  • A viral disease caused by at least two distinct species (serotypes) in the vesiculovirus genus: vesicular stomatitis indiana virus and vesicular stomatitis new jersey virus. It is characterized by vesicular eruptions on the oral mucosa in cattle, horses, pigs, and other animals. In humans, vesicular stomatitis causes an acute influenza-like illness.
  • Inflammation of the mouth due to denture irritation.
  • Inflammation of the mucous tissue of the mouth
  • Inflammation of the oral mucosa due to local or systemic factors.
  • Inflammation of the soft tissues of the mouth, such as mucosa; palate; gingiva; and lip.
  • Inflammation or irritation of the mucous membranes in the mouth.
ICD-10-CM K12.1 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 011 Tracheostomy for face,mouth & neck diagnoses or laryngectomy with mcc
  • 012 Tracheostomy for face,mouth & neck diagnoses or laryngectomy with cc
  • 013 Tracheostomy for face,mouth & neck diagnoses or laryngectomy without cc/mcc
  • 157 Dental and oral diseases with mcc
  • 158 Dental and oral diseases with cc
  • 159 Dental and oral diseases without cc/mcc

Convert K12.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change

Diagnosis Index entries containing back-references to K12.1:
  • Catarrh, catarrhal (acute) (febrile) (infectious) (inflammation) J00
    - see also condition
    ICD-10-CM Diagnosis Code J00

    Acute nasopharyngitis [common cold]

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Acute rhinitis
    • Coryza (acute)
    • Infective nasopharyngitis NOS
    • Infective rhinitis
    • Nasal catarrh, acute
    • Nasopharyngitis NOS
    Type 1 Excludes
    Type 2 Excludes
    • mouth K12.1
  • Inflammation, inflamed, inflammatory (with exudation)
    • mouth K12.1
  • Stomatitis (denture) (ulcerative) K12.1
    • vesicular K12.1
    • catarrhal K12.1
    • follicular K12.1
    • malignant K12.1
    • membranous acute K12.1
    • septic K12.1
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerative
    • buccal K12.1 (cavity) (traumatic)
    • oral mucosa K12.1 (traumatic)
    • palate K12.1 (soft)
    • stomatitis K12.1

ICD-10-CM Codes Adjacent To K12.1
K11.23 Chronic sialoadenitis
K11.3 Abscess of salivary gland
K11.4 Fistula of salivary gland
K11.5 Sialolithiasis
K11.6 Mucocele of salivary gland
K11.7 Disturbances of salivary secretion
K11.8 Other diseases of salivary glands
K11.9 Disease of salivary gland, unspecified
K12 Stomatitis and related lesions
K12.0 Recurrent oral aphthae
K12.1 Other forms of stomatitis
K12.2 Cellulitis and abscess of mouth
K12.3 Oral mucositis (ulcerative)
K12.30 …… unspecified
K12.31 …… due to antineoplastic therapy
K12.32 …… due to other drugs
K12.33 …… due to radiation
K12.39 Other oral mucositis (ulcerative)
K13 Other diseases of lip and oral mucosa
K13.0 Diseases of lips
K13.1 Cheek and lip biting

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.