Oral mucositis (ulcerative), unspecified

This code signifies inflammation and ulceration of the oral mucous membranes, without further specification of its cause. It represents a general diagnosis of oral mucositis characterized by open sores or lesions within the mouth.

Use this code when documentation indicates oral mucositis with ulceration, but the underlying etiology (e.g., chemotherapy, radiation, infection) is not specified or definitively known. This code is appropriate when the provider simply diagnoses "oral mucositis (ulcerative)" without additional details.

• Avoid using this code if the cause of the oral mucositis is documented; instead, code the specific type (e.g., K12.31 for mucositis due to antineoplastic therapy).
• Ensure the documentation explicitly mentions "ulcerative" or describes open sores to support the "ulcerative" component of the code.
• Consider sequencing this code after the primary condition or treatment causing the mucositis, if applicable and known.