K12.2 ICD-10-CA code: Cellulitis and abscess of mouth
K12.2 is the ICD-10-CA code for “Cellulitis and abscess of mouth” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
K12.2Cellulitis and abscess of mouth
ICD-10-CA · Canada · Also written K122
Index terms
Entries in CIHI’s alphabetical index that lead to K12.2. Searching the index by the condition the note names is how coders reach this code.
- Fistula, mouth
- Fistula, oral (cutaneous)
- Ludwig's angina or disease
- Fistula, buccal cavity (infective)
- Stomatitis (denture) (ulcerative), suppurative (acute)
- Cellulitis (diffuse) (with lymphangitis), mouth (floor)
- Abscess (embolic) (infective) (metastatic) (multiple) (pyogenic) (septic), sublingual
- Angina (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor), Ludwig's
- Abscess (embolic) (infective) (metastatic) (multiple) (pyogenic) (septic), buccal cavity
- Abscess (embolic) (infective) (metastatic) (multiple) (pyogenic) (septic), mouth (floor)
- Abscess (embolic) (infective) (metastatic) (multiple) (pyogenic) (septic), palate (soft)
- Uvulitis (acute) (catarrhal) (chronic) (gangrenous) (membranous) (suppurative) (ulcerative)
- Staphylitis (acute) (catarrhal) (chronic) (gangrenous) (membranous) (suppurative) (ulcerative)
- Abscess (embolic) (infective) (metastatic) (multiple) (pyogenic) (septic), submandibular (region) (space) (triangle)
Notes for K12.2
As CIHI prints them, with any note K12.2 takes from the headings above it.
Includes
- Cellulitis of mouth (floor)Submandibular abscess
Excludes
Conditions classified elsewhere.
- Abscess (of):• periapical (K04.6-K04.7)• periodontal (K05.2)• peritonsillar (J36)• salivary gland (K11.3)• tongue (K14.0)
- Cancrum oris (A69.0)cheilitis (K13.0)gangrenous stomatitis (A69.0)herpesviral [herpes simplex] gingivostomatitis (B00.2)noma (A69.0)From K12 Stomatitis and related lesions
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 11: Diseases of the digestive system (K00-K93)
Where K12.2 sits
- 1ChapterChapter 11: Diseases of the digestive system (K00-K93)
- 2Block K00-K14Diseases of oral cavity, salivary glands and jaws
- 3Category K12Stomatitis and related lesions
- 4Valid code K12.2Cellulitis and abscess of mouth
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code K12.2 mean?
K12.2 is the ICD-10-CA code for “Cellulitis and abscess of mouth” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is K12.2 in ICD-10-CA?
K12.2 sits under K12 Stomatitis and related lesions, within K00-K14 Diseases of oral cavity, salivary glands and jaws, within Chapter 11: Diseases of the digestive system (K00-K93).
What coding notes apply to K12.2?
ICD-10-CA lists Includes, Excludes notes for K12.2, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.