Back to HomeBeta

ICD-10 Coding for Aphthous Stomatitis(K12.0, K12.1)

Complete ICD-10-CM coding and documentation guide for Aphthous Stomatitis. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Canker SoresRecurrent Oral AphthaeAphthous Ulcers

Related ICD-10 Code Ranges

Complete code families applicable to Aphthous Stomatitis

K12.0-K12.1Primary Range

Stomatitis and related lesions

Covers recurrent aphthous stomatitis and other forms of stomatitis.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
K12.0Recurrent oral aphthaeUse for patients with recurrent aphthous ulcers, typically ≥3 episodes per year.
  • Clinical exam showing recurrent painful ulcers on non-keratinized mucosa
  • Negative HSV PCR to exclude herpetic etiology
K12.1Other forms of stomatitisUse for stomatitis cases not meeting criteria for K12.0.
  • Clinical exam showing stomatitis not fitting criteria for recurrent aphthous stomatitis

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for aphthous stomatitis

Essential facts and insights about Aphthous Stomatitis

The ICD-10 code for recurrent aphthous stomatitis is K12.0, used for recurrent painful ulcers on non-keratinized mucosa.

Primary ICD-10-CM Codes for aphthous stomatitis

Recurrent oral aphthae
Billable Code

Decision Criteria

clinical Criteria

  • Recurrent painful ulcers on non-keratinized mucosa

coding Criteria

  • Negative HSV PCR to exclude herpetic etiology

Applicable To

  • Aphthous stomatitis major
  • Aphthous stomatitis minor
  • Bednar's aphthae

Excludes

Clinical Validation Requirements

  • Clinical exam showing recurrent painful ulcers on non-keratinized mucosa
  • Negative HSV PCR to exclude herpetic etiology

Code-Specific Risks

  • Confusion with herpetic stomatitis if vesicles are present
  • Misclassification if underlying conditions are not documented

Coding Notes

  • Ensure documentation specifies recurrence and rules out viral causes.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Contact with and (suspected) exposure to other hazardous substances

Z77.29
Use when nutritional deficiencies like iron or B12 are documented.

Other sexual dysfunction not due to a substance or known physiological condition

F52.8
Use when stress-related factors are documented.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Herpetic gingivostomatitis

B00.2
Presence of vesicles and positive HSV PCR.

Oral thrush

B37.0
Presence of white patches on oral mucosa.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Aphthous Stomatitis to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code K12.0.

Impact

Clinical: Leads to misdiagnosis and inappropriate treatment., Regulatory: Non-compliance with documentation standards., Financial: Potential for denied claims due to insufficient documentation.

Mitigation Strategy

Provide detailed descriptions of lesions, Include test results to exclude other conditions

Impact

Reimbursement: Incorrect coding may lead to denied claims., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data affecting patient records.

Mitigation Strategy

Ensure documentation specifies absence of vesicles and negative HSV PCR.

Impact

Insufficient detail on lesion size and location can lead to audit issues.

Mitigation Strategy

Ensure detailed documentation of each ulcer's characteristics.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Aphthous Stomatitis, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Aphthous Stomatitis

Use these documentation templates to ensure complete and accurate documentation for Aphthous Stomatitis. These templates include all required elements for proper coding and billing.

Recurrent Aphthous Stomatitis in Primary Care

Specialty: Primary Care

Required Elements

  • Lesion size and location
  • Recurrence frequency
  • Exclusion of viral causes

Example Documentation

Patient presents with recurrent, painful 4mm ulcers on non-keratinized buccal mucosa, no vesicles or crusting. No response to OTC treatments. Negative HSV PCR. Serum ferritin 8 ng/mL.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Mouth sores present.
Good Documentation Example
Recurrent, painful 4mm ulcers on non-keratinized buccal mucosa, no vesicles or crusting. Negative HSV PCR.
Explanation
The good example provides specific details about the ulcers and excludes viral causes.

Need help with ICD-10 coding for Aphthous Stomatitis? Ask your questions below.

Ask about any ICD-10 CM code, or paste a medical note

We build tools for
clinician happiness.

Learn More at Freed.ai
Back to HomeBeta

Built by Freed

Try Freed for free for 7 days.

Learn more