ICD-10 Coding for Fungal Skin Infection(B35.1, B35.3)
Complete ICD-10-CM coding and documentation guide for Fungal Skin Infection. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Fungal Skin Infection
B35.0-B35.9Primary Range
Dermatophytosis
This range covers various types of dermatophytosis, including tinea pedis, tinea corporis, and tinea unguium.
Other fungal skin infections
This range includes systemic fungal infections with cutaneous manifestations.
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| B35.1 | Tinea unguium | Use when there is confirmed fungal infection of the nails. |
|
| B35.3 | Tinea pedis | Use for confirmed fungal infection of the feet. |
|
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 fungal skin infection
Essential facts and insights about Fungal Skin Infection
Primary ICD-10-CM Codes for fungal skin infection
Decision Criteria
clinical Criteria
- Presence of fungal elements in nail samples
Applicable To
- Onychomycosis
Excludes
- Nail psoriasis
- Nail lichen planus
Clinical Validation Requirements
- Nail clipping with PAS stain showing hyphae
Code-Specific Risks
- Misclassification without lab confirmation
Coding Notes
- Ensure lab confirmation is documented.
B35.3 - Tinea pedis
Use for confirmed fungal infection of the feet.
Applicable To
- Athlete’s foot
Excludes
- Interdigital dermatitis
Clinical Validation Requirements
- KOH prep positive for septate hyphae
Coding Notes
Document specific symptoms and lab results.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Fungal Skin Infection to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code B35.1.
Impact
Clinical: May lead to incorrect treatment., Regulatory: Fails to meet documentation standards., Financial: Potential for claim denials.
Mitigation Strategy
Specify rash characteristics and location, Include lab results if available
Impact
Reimbursement: May lead to claim denials due to lack of specificity., Compliance: Non-compliance with coding guidelines., Data Quality: Decreases accuracy of clinical data.
Mitigation Strategy
Use specific codes like B35.3 for tinea pedis when site is known.
Impact
Risk of audits due to use of unspecified codes.
Mitigation Strategy
Use the most specific code available and ensure documentation supports it.
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 Fungal Skin Infection, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Fungal Skin Infection
Use these documentation templates to ensure complete and accurate documentation for Fungal Skin Infection. These templates include all required elements for proper coding and billing.
Patient with suspected fungal nail infection
Specialty: DermatologyRequired Elements
- Chief complaint
- Objective findings
- Diagnostic evidence
- Assessment and plan
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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