2021 ICD-10-CM Diagnosis Code K12.2

Cellulitis and abscess of mouth

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • K12.2 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM K12.2 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of K12.2 - other international versions of ICD-10 K12.2 may differ.
Applicable To
  • Cellulitis of mouth (floor)
  • Submandibular abscess
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (K12.2) and the excluded code together.
  • abscess of salivary gland (
    ICD-10-CM Diagnosis Code K11.3

    Abscess of salivary gland

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    K11.3
    )
  • abscess of tongue (
    ICD-10-CM Diagnosis Code K14.0

    Glossitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Abscess of tongue
    • Ulceration (traumatic) of tongue
    Type 1 Excludes
    • atrophic glossitis (K14.4)
    K14.0
    )
  • periapical abscess (
    ICD-10-CM Diagnosis Code K04.6

    Periapical abscess with sinus

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Dental abscess with sinus
    • Dentoalveolar abscess with sinus
    K04.6-
    ICD-10-CM Diagnosis Code K04.7

    Periapical abscess without sinus

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Dental abscess without sinus
    • Dentoalveolar abscess without sinus
    K04.7
    )
  • periodontal abscess (
    ICD-10-CM Diagnosis Code K05.21

    Aggressive periodontitis, localized

      2016 2017 - Converted to Parent Code 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Periodontal abscess
    K05.21
    )
  • peritonsillar abscess (
    ICD-10-CM Diagnosis Code J36

    Peritonsillar abscess

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Includes
    • abscess of tonsil
    • peritonsillar cellulitis
    • quinsy
    Type 1 Excludes
    • acute tonsillitis (J03.-)
    • chronic tonsillitis (J35.0)
    • retropharyngeal abscess (J39.0)
    • tonsillitis NOS (J03.9-)
    Use Additional
    • code (B95-B97) to identify infectious agent.
    J36
    )
The following code(s) above K12.2 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 K12.2:
  • K00-K95
    2021 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 2020 2021 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
  • Abscess of buccal cavity (cheek)
  • Abscess of mouth
  • Abscess of oral tissue
  • Abscess of sublingual space
  • Abscess of submandibular region
  • Cellulitis of floor of mouth
  • Cellulitis of oral soft tissues
  • Cellulitis of submandibular region
  • Inflammation of uvula
  • Ludwig's angina
  • Ludwigs angina
  • Sublingual region abscess
  • Submandibular region abscess
  • Uvulitis
ICD-10-CM K12.2 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 011 Tracheostomy for face, mouth and neck diagnoses or laryngectomy with mcc
  • 012 Tracheostomy for face, mouth and neck diagnoses or laryngectomy with cc
  • 013 Tracheostomy for face, mouth and 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 K12.2 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
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
Code annotations containing back-references to K12.2:
  • Type 2 Excludes: L02.0
    , L02.0
    , L03
    , L03.211
    ICD-10-CM Diagnosis Code L02.0

    Cutaneous abscess, furuncle and carbuncle of face

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • abscess of ear, external (H60.0)
    • abscess of eyelid (H00.0)
    • abscess of head [any part, except face] (L02.8)
    • abscess of lacrimal gland (H04.0)
    • abscess of lacrimal passages (H04.3)
    • abscess of mouth (K12.2)
    • abscess of nose (J34.0)
    • abscess of orbit (H05.0)
    • submandibular abscess (K12.2)
    ICD-10-CM Diagnosis Code L02.0

    Cutaneous abscess, furuncle and carbuncle of face

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • abscess of ear, external (H60.0)
    • abscess of eyelid (H00.0)
    • abscess of head [any part, except face] (L02.8)
    • abscess of lacrimal gland (H04.0)
    • abscess of lacrimal passages (H04.3)
    • abscess of mouth (K12.2)
    • abscess of nose (J34.0)
    • abscess of orbit (H05.0)
    • submandibular abscess (K12.2)
    ICD-10-CM Diagnosis Code L03

    Cellulitis and acute lymphangitis

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • cellulitis of anal and rectal region (K61.-)
    • cellulitis of external auditory canal (H60.1)
    • cellulitis of eyelid (H00.0)
    • cellulitis of female external genital organs (N76.4)
    • cellulitis of lacrimal apparatus (H04.3)
    • cellulitis of male external genital organs (N48.2, N49.-)
    • cellulitis of mouth (K12.2)
    • cellulitis of nose (J34.0)
    • eosinophilic cellulitis [Wells] (L98.3)
    • febrile neutrophilic dermatosis [Sweet] (L98.2)
    • lymphangitis (chronic) (subacute) (I89.1)
    ICD-10-CM Diagnosis Code L03.211

    Cellulitis of face

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Type 2 Excludes
    • abscess of orbit (H05.01-)
    • cellulitis of ear (H60.1-)
    • cellulitis of eyelid (H00.0-)
    • cellulitis of head (L03.81)
    • cellulitis of lacrimal apparatus (H04.3)
    • cellulitis of lip (K13.0)
    • cellulitis of mouth (K12.2)
    • cellulitis of nose (internal) (J34.0)
    • cellulitis of orbit (H05.01-)
    • cellulitis of scalp (L03.81)

Diagnosis Index entries containing back-references to K12.2:
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) L02.91
    ICD-10-CM Diagnosis Code L02.91

    Cutaneous abscess, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • cheek (external) L02.01
      ICD-10-CM Diagnosis Code L02.01

      Cutaneous abscess of face

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • inner K12.2
    • palate (soft) K12.2
    • parotid (duct) (gland) K11.3
      ICD-10-CM Diagnosis Code K11.3

      Abscess of salivary gland

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • region K12.2
    • sublingual K12.2
    • submandibular (region) (space) (triangle) K12.2
    • buccal cavity K12.2
    • mouth K12.2 (floor)
    • uvula K12.2
  • Angina (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor) I20.9
    ICD-10-CM Diagnosis Code I20.9

    Angina pectoris, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Angina NOS
    • Anginal syndrome
    • Cardiac angina
    • Ischemic chest pain
    • Ludovici K12.2
    • Ludwig's K12.2
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative) L03.90
    ICD-10-CM Diagnosis Code L03.90

    Cellulitis, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • cheek (external) L03.211
      ICD-10-CM Diagnosis Code L03.211

      Cellulitis of face

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Type 2 Excludes
      • abscess of orbit (H05.01-)
      • cellulitis of ear (H60.1-)
      • cellulitis of eyelid (H00.0-)
      • cellulitis of head (L03.81)
      • cellulitis of lacrimal apparatus (H04.3)
      • cellulitis of lip (K13.0)
      • cellulitis of mouth (K12.2)
      • cellulitis of nose (internal) (J34.0)
      • cellulitis of orbit (H05.01-)
      • cellulitis of scalp (L03.81)
      • internal K12.2
    • submandibular (region) (space) (triangle) K12.2
    • submaxillary (region) K12.2
    • mouth K12.2 (floor)
    • palate K12.2 (soft)
  • Disease, diseased - see also Syndrome
    • Ludwig's K12.2 (submaxillary cellulitis)
  • Fistula (cutaneous) L98.8
    ICD-10-CM Diagnosis Code L98.8

    Other specified disorders of the skin and subcutaneous tissue

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • oral (cutaneous) K12.2
    • parotid (gland) K11.4
      ICD-10-CM Diagnosis Code K11.4

      Fistula of salivary gland

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Type 1 Excludes
      • congenital fistula of salivary gland (Q38.4)
      • region K12.2
    • submaxillary (gland) K11.4
      ICD-10-CM Diagnosis Code K11.4

      Fistula of salivary gland

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Type 1 Excludes
      • congenital fistula of salivary gland (Q38.4)
      • region K12.2
    • buccal cavity K12.2 (infective)
    • mouth K12.2
  • Furuncle L02.92
    ICD-10-CM Diagnosis Code L02.92

    Furuncle, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Boil NOS
    • Furunculosis NOS
    • mouth K12.2
    • submandibular K12.2
  • Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer) I96
    - see also Necrosis
    ICD-10-CM Diagnosis Code I96

    Gangrene, not elsewhere classified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Gangrenous cellulitis
    Type 1 Excludes
    Type 2 Excludes
    • gangrene in diabetes mellitus (E08-E13 with .52)
    • uvulitis K12.2
  • Ludwig's angina or disease K12.2
  • Staphylitis K12.2 (acute) (catarrhal) (chronic) (gangrenous) (membranous) (suppurative) (ulcerative)
  • Stomatitis (denture) (ulcerative) K12.1
    ICD-10-CM Diagnosis Code K12.1

    Other forms of stomatitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Stomatitis NOS
    • Denture stomatitis
    • Ulcerative stomatitis
    • Vesicular stomatitis
    Type 1 Excludes
    • acute necrotizing ulcerative stomatitis (A69.1)
    • Vincent's stomatitis (A69.1)
    • suppurative K12.2 (acute)
  • Uvulitis K12.2 (acute) (catarrhal) (chronic) (membranous) (suppurative) (ulcerative)

ICD-10-CM Codes Adjacent To K12.2
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
K13.2 Leukoplakia and other disturbances of oral epithelium, including tongue

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