K12.1
✓ Billable
Other forms of stomatitis
ICD-10-CM · FY2026 · Diseases of the Digestive System
Code
K12.1
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Digestive System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code K12.1?
ICD-10-CM code K12.1 represents Other forms of stomatitis. It is a billable diagnosis code in the Diseases of the Digestive System chapter, effective October 1, 2025 – September 30, 2026.
Is K12.1 billable?
Yes. K12.1 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is K12.1 in?
K12.1 belongs to the Diseases of the Digestive System chapter (K00–K95) of ICD-10-CM.
Related codes in the K12 category
K12
Stomatitis and related lesions
Non-billable
K12.0
Recurrent oral aphthae
Billable
K12.2
Cellulitis and abscess of mouth
Billable
K12.3
Oral mucositis (ulcerative)
Non-billable
K12.30
Oral mucositis (ulcerative), unspecified
Billable
K12.31
Oral mucositis (ulcerative) due to antineoplastic therapy
Billable
K12.32
Oral mucositis (ulcerative) due to other drugs
Billable
K12.33
Oral mucositis (ulcerative) due to radiation
Billable
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