K12.2

Billable

Cellulitis and abscess of mouth

K12.2 is the ICD-10-CM code for Cellulitis and abscess of mouth. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
K00-K95
Parent
K12
Edition
FY2026

K00-K95 Diseases of the digestive system

What this means — in plain language

MedlinePlus · NIH

An abscess is a pocket of pus. You can get an abscess almost anywhere in your body. When an area of your body becomes infected, your body's immune system tries to fight the infection. White blood cells go to the infected area, collect within the damaged tissue, and cause inflammation. During this process, pus forms. Pus is a mixture of living and dead white blood cells, germs, and dead tissue. Bacteria, viruses,…

Read more about Abscess at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • Cellulitis of mouth (floor)
  • Submandibular abscess

Excludes2 — not included here

  • abscess of salivary gland (K11.3)
  • abscess of tongue (K14.0)
  • periapical abscess (K04.6-K04.7)
  • periodontal abscess (K05.21)
  • peritonsillar abscess (J36)

Frequently asked questions

What is ICD-10 code K12.2?
K12.2 is the ICD-10-CM code for "Cellulitis and abscess of mouth". It falls under K00-K95 Diseases of the digestive system.
Is K12.2 a billable code?
Yes — K12.2 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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