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v1.0.0
ICD-10 Guide
ICD-10 CodesB42

B42

ICD-10 Title: Sporotrichosis

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 B42 is a billable code used to indicate a diagnosis of icd-10 title: sporotrichosis.

Key Diagnostic Point:

Sporotrichosis is a fungal infection caused by the dimorphic fungus Sporothrix schenckii, which is commonly found in soil, plants, and decaying organic matter. The infection typically manifests as a subcutaneous infection characterized by nodular lesions that can ulcerate and drain. It is often associated with activities that involve handling plant material, such as gardening or farming. In immunocompetent individuals, sporotrichosis usually presents as a localized infection, but in immunocompromised patients, such as those with HIV/AIDS or undergoing chemotherapy, the disease can disseminate, leading to more severe systemic manifestations. Diagnosis is primarily clinical, supported by culture or histopathological examination. Treatment involves antifungal therapy, with itraconazole being the first-line agent. In severe cases, especially in immunocompromised patients, amphotericin B may be required. Early diagnosis and appropriate treatment are crucial to prevent complications, particularly in vulnerable populations.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating sporotrichosis from other fungal infections.
  • Understanding the immunocompromised status of the patient.
  • Variability in clinical presentation based on host factors.
  • Need for accurate documentation of exposure history.

Audit Risk Factors

  • Inadequate documentation of exposure history.
  • Failure to note immunocompromised status.
  • Misclassification of the type of fungal infection.
  • Lack of supporting diagnostic tests in the medical record.

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed patient history, including exposure risks and immune status.

Common Clinical Scenarios

Patients presenting with skin lesions after gardening or exposure to soil.

Billing Considerations

Documentation of culture results and response to antifungal therapy is critical.

Dermatology

Documentation Requirements

Photographic evidence of lesions and detailed descriptions of clinical findings.

Common Clinical Scenarios

Patients with chronic skin lesions that do not respond to standard treatments.

Billing Considerations

Differentiating sporotrichosis from other dermatological conditions is essential.

Coding Guidelines

Inclusion Criteria

Use B42 When
  • According to the official coding guidelines, sporotrichosis is classified under fungal infections
  • Coders must ensure that the documentation supports the diagnosis and includes any relevant comorbidities, particularly immunocompromised states

Exclusion Criteria

Do NOT use B42 When
No specific exclusions found.

Related Codes

Child Codes

8 codes
B42.0
Pulmonary coccidioidomycosis
B42.1
ICD-10 Title: Pulmonary coccidioidomycosis
B42.7
Candidiasis of vulva and vagina
B42.8
Other forms of coccidioidomycosis
B42.81
Cerebral sporotrichosis
B42.82
Sporotrichosis arthritis
B42.89
Other forms of sporotrichosis
B42.9
Chronic disseminated candidiasis, unspecified

Related CPT Codes

87481CPT Code

Fungal culture

Clinical Scenario

Used to confirm the diagnosis of sporotrichosis.

Documentation Requirements

Document the specimen source and culture results.

Specialty Considerations

Infectious disease specialists may require additional lab results.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of sporotrichosis, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of fungal infections and their outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of sporotrichosis, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of fungal infections and their outcomes.

Reimbursement & Billing Impact

reimbursement processes. It has also facilitated better tracking of fungal infections and their outcomes.

Resources

Clinical References

  • •
    CDC Fungal Diseases

Coding & Billing References

  • •
    CDC Fungal Diseases

Frequently Asked Questions

What is the primary treatment for sporotrichosis?

The primary treatment for sporotrichosis is itraconazole, which is effective for most cases. In severe or disseminated cases, amphotericin B may be necessary.