B35.1

B35.1: Tinea unguium

Billable / specific codeICD-10-CM

B35.1 is a billable, specific ICD-10-CM code for tinea unguium. It is valid for submission on a claim.

Check B35.1 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Dermatophytic onychia
Dermatophytosis of nail
Onychomycosis
Ringworm of nails

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

B35.1 is named in 16 Medicare coverage policies: 16 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A52996Billing and Coding: Routine Foot Care
A52998Billing and Coding: Surgical Treatment of Nails
A56232Billing and Coding: Foot Care
A56640Billing and Coding: Debridement of Mycotic Nails

Alphabetic index entries that lead here

Onychomycosis(finger) (toe)
Dermatophytosis›nail
Mycosis, mycotic›nails
Onychia›dermatophytic
Ringworm›nails
Tinea›unguium
Infection, infected, infective›fungus NOS›nail
Infection, infected, infective›finger›nail›fungus
Infection, infected, infective›fungus NOS›skin›toenails
Infection, infected, infective›nail›finger›fungus
Infection, infected, infective›nail›toe›fungus
Infection, infected, infective›toe›cellulitis›fungus

Code history

Unchanged in every release from FY2024 to FY2027.