Complete ICD-10-CM coding and documentation guide for icd-10 coding for onychomycosis of toenails includes clinical validation requirements, medical necessity guidelines, and coding policies.
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Essential facts and insights about ICD-10 Coding for Onychomycosis of Toenails
Use ICD-10 code B35.1 for tinea unguium, ensuring proper documentation in clinical notes.
Additional codes that may be used with this diagnosis
Onycholysis
Use when nail separation is present alongside onychomycosis.
Nail dystrophy
Use for thickened or crumbling nails as a result of onychomycosis.
The ICD-10 code for onychomycosis of toenails is B35.1, which is used when a fungal infection is confirmed by lab tests.
Document onychomycosis by including specific lab test results such as KOH microscopy or PCR confirming the fungal infection.