Find information on onychomycosis of toenails, including clinical documentation, ICD-10 codes (B35.1), medical coding, and healthcare guidance. Learn about diagnosis, treatment, and best practices for documenting toenail fungus in medical records. This resource provides essential information for healthcare professionals on managing and coding onychomycosis. Explore details on fungal nail infections, distal subungual onychomycosis, and proximal subungual onychomycosis for accurate diagnosis and treatment.
Also known as
Onychomycosis
Fungal infection of the nail.
Tinea unguium
Onychomycosis specifically caused by dermatophytes.
Diseases of the skin and subcutaneous tissue
Encompasses various skin and nail conditions, including infections.
Follow this step-by-step guide to choose the correct ICD-10 code.
Is the onychomycosis confirmed by a physician?
When to use each related code
| Description |
|---|
| Toenail fungal infection |
| Nail psoriasis |
| Toenail trauma |
Coding onychomycosis without specifying affected toenail(s) (right, left, bilateral) leads to inaccurate data and potential claim rejections. Use B35.1 with laterality codes.
Failing to document the causative organism (dermatophyte, yeast, nondermatophyte mold) when known impacts treatment and statistical reporting. Add appropriate ICD-10-CM code.
Misdiagnosing ingrown toenail (L60.0) as onychomycosis (B35.1) results in incorrect treatment and coding errors. Careful clinical documentation is crucial.
Patient presents with symptoms consistent with onychomycosis, also known as toenail fungus. Clinical findings include thickened, discolored (yellow, brown, or white), brittle, and possibly crumbling toenails. The patient reports [Insert patient's subjective complaints, e.g., nail thickening, discoloration, pain, foul odor, difficulty trimming nails]. Affected toenails are [Specify location, e.g., great toe, lesser toes, unilateral, bilateral]. The patient denies any recent trauma to the affected area. Differential diagnoses considered include psoriasis, lichen planus, and traumatic nail dystrophy. Based on clinical presentation, a diagnosis of distal subungual onychomycosis is made. Treatment options discussed include topical antifungal medications such as ciclopirox nail lacquer or efinaconazole solution, oral antifungal medications such as terbinafine or itraconazole, and laser therapy. Risks and benefits of each treatment option were explained. Patient elected to begin treatment with [Specify chosen treatment]. Patient education provided regarding proper nail hygiene, including keeping nails trimmed short, dry, and clean. Follow-up appointment scheduled in [Duration] to monitor treatment response and assess for any adverse effects. ICD-10 code B35.1 is assigned for onychomycosis. CPT codes for potential procedures, such as nail debridement (11720, 11721), were reviewed and will be applied if performed during subsequent visits. Patient understands the diagnosis, treatment plan, and importance of adherence.