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Home/Diagnosis/ICD-10 Coding for Fungal Skin Infection

ICD-10 Coding for Fungal Skin Infection

B35.1
B35.3

Complete ICD-10-CM coding and documentation guide for icd-10 coding for fungal skin infection includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Dermatophytosis
Tinea
Ringworm
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Key Information: ICD-10 Coding for Fungal Skin Infection

Essential facts and insights about ICD-10 Coding for Fungal Skin Infection

Use ICD-10 code B35.1 for tinea unguium, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Tinea unguium

Billable Code
B35.1
Billable

Diagnostic Criteria

clinical_criteria:
  • • Presence of fungal elements in nail samples

Applicable To

  • • Onychomycosis

Important Notes

  • • Ensure lab confirmation is documented.

Tinea pedis

Billable Code
B35.3
Billable

Diagnostic Criteria

clinical_criteria:
  • • KOH prep positive for septate hyphae

Applicable To

  • • Athlete’s foot

Important Notes

  • • Document specific symptoms and lab results.
Ancillary Codes

Additional codes that may be used with this diagnosis

L60.1

Onycholysis

Use if nail separation is present alongside tinea unguium.

L08.9

Secondary bacterial infection

Use if secondary infection is present.

Frequently Asked Questions

What is the ICD-10 code for fungal skin infection?

The ICD-10 code for fungal skin infection varies by type, such as B35.1 for tinea unguium and B35.3 for tinea pedis.

How do you document a fungal skin infection?

Document specific symptoms, affected site, and lab confirmation such as KOH prep results to support the diagnosis.

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