ICD-10 Coding for Tinea Unguium(B35.1, B35.1B, B35.1T)

Comprehensive guide on ICD-10 coding for tinea unguium, including documentation requirements, coding pitfalls, and billing considerations.

Also known as:
OnychomycosisFungal Nail Infection
Related ICD-10 Code Ranges

Complete code families applicable to Tinea Unguium

Key Information

Essential facts and insights aboutTinea Unguium

Primary ICD-10-CM Codes
Differential Codes

Alternative codes to consider when ruling out similar conditions

Ingrown nailL60.0
Psoriatic nailsL40.5

Documentation & Coding Risks

Avoid these common issues when documenting Tinea Unguium.

Omitting laterality in documentation

Impact

Clinical: Inaccurate treatment planning., Regulatory: Non-compliance with coding standards., Financial: Potential claim rejections.

Mitigation

Always specify affected nails., Use laterality modifiers where applicable.

Unconfirmed diagnosis

Impact

Reimbursement: May lead to claim denials., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data.

Mitigation

Use symptom codes until lab confirmation is obtained.

Lack of lab confirmation

Impact

Coding B35.1 without lab test results increases audit risk.

Mitigation

Ensure all diagnoses are supported by lab documentation.

Frequently Asked Questions