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Home/Diagnosis/ICD-10 Coding for Foot Fungus

ICD-10 Coding for Foot Fungus

B35.3
B35.1

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

Also Known as:
Athlete's Foot
Tinea Pedis
Onychomycosis
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Key Information: ICD-10 Coding for Foot Fungus

Essential facts and insights about ICD-10 Coding for Foot Fungus

Use ICD-10 code B35.3 for tinea pedis, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Tinea pedis

Billable Code
B35.3
Billable

Diagnostic Criteria

clinical:
  • • Presence of interdigital scaling and positive KOH test
documentation:
  • • Detailed description of skin involvement

Applicable To

  • • Athlete's foot
  • • Fungal infection of the foot

Important Notes

  • • Ensure documentation specifies the type of tinea pedis and any associated symptoms.

Tinea unguium

Billable Code
B35.1
Billable

Diagnostic Criteria

clinical:
  • • Onycholysis
  • • Subungual debris
  • • Positive fungal culture

Applicable To

  • • Onychomycosis
  • • Fungal infection of the nail

Important Notes

  • • Document the specific nail findings and confirm fungal etiology with lab tests.
Ancillary Codes

Additional codes that may be used with this diagnosis

M79.67-

Pain in toe

Use to document associated pain symptoms.

L03.03-

Cellulitis of toe

Use if there is a secondary bacterial infection.

E11.9

Type 2 diabetes mellitus without complications

Use if the patient has diabetes, affecting treatment.

Frequently Asked Questions

What is the ICD-10 code for foot fungus?

The ICD-10 code for foot fungus affecting the skin is B35.3, while for nail involvement, it is B35.1.

How do you code tinea pedis?

Tinea pedis is coded as B35.3 in ICD-10, requiring documentation of skin involvement and confirmation by lab tests.

What documentation is needed for onychomycosis?

Onychomycosis documentation should include nail findings like onycholysis and lab confirmation of fungal infection.

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