B36.9 Superficial mycosis, unspecified

ICD10CM code

#### Name of the Condition
- **Superficial Mycosis, Unspecified**  
- Synonyms: Dermatophytosis, Tinea, Ringworm

#### Summary
Superficial mycosis is a fungal infection affecting the outermost layer of skin, hair, or nails. It's often mild and includes conditions like athlete's foot, ringworm, and jock itch, leading to discomfort and potential skin changes but is typically not serious.

#### Causes
Superficial mycosis is caused by fungi known as dermatophytes, which thrive in warm, moist environments. These infections are easily spread through direct contact with an infected person or animal and indirectly through contaminated items like clothing, towels, or floors.

#### Risk Factors
- Warm, humid climates
- Poor personal hygiene
- Wearing tight-fitting or non-breathable clothing
- Immunocompromised individuals
- Sharing personal items like towels or footwear

#### Symptoms
- Itchy, scaly skin patches
- Red, inflamed areas or a rash
- Cracking or peeling of the skin
- Discolored or brittle nails

#### Diagnosis
- Clinical examination of the affected area
- Fungal culture or skin biopsy
- Dermoscopy or light microscopy of skin scrapings

#### Treatment Options
- Antifungal creams, ointments, or powders for topical application
- Oral antifungal medications for widespread or stubborn infections
- Keeping affected areas clean and dry

#### Prognosis and Follow-Up
With proper treatment, superficial mycosis usually resolves without complications. Follow-up is essential to ensure the infection is clearing and adjust treatments if needed.

#### Complications
- Secondary bacterial infections from scratching
- Chronic or recurrent infections
- Permanent skin discoloration or nail deformities

#### Lifestyle & Prevention
- Maintain good personal hygiene
- Keep skin dry, especially in folds and between digits
- Avoid sharing personal items
- Wear footwear in communal areas like pools or gyms

#### When to Seek Professional Help
- Persistent infection despite over-the-counter treatment
- Severe pain or swelling
- Signs of a secondary bacterial infection (e.g., pus, excessive redness)

#### Additional Resources
- [American Academy of Dermatology Association](https://www.aad.org)
- [CDC - Fungal Diseases](https://www.cdc.gov/fungal/index.html)

#### Tips for Medical Coders
- Ensure the diagnosis is confirmed as superficial mycosis before using code B36.9.
- Avoid coding specific types of mycosis (e.g., athlete's foot) under B36.9 if a more specific code is available.

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