2025 ICD-10-CM code B40.89
(Active) Effective Date: N/A Revision Date: N/A Deletion Date: N/A Infectious Diseases - Mycoses (B35-B49) Chapter 1: Certain infectious and parasitic diseases (A00-B99) Feed
Other forms of blastomycosis, a fungal lung infection caused by inhaling spores of Blastomyces dermatitidis.
Medical necessity for diagnosis and treatment of blastomycosis is established by presenting symptoms, positive laboratory results, and the potential for severe complications (disseminated infection, ARDS) if left untreated.The choice of antifungal medication should be guided by the severity of the infection and the patient's clinical status.
Diagnosis and management of blastomycosis involve obtaining a comprehensive patient history (including travel history to endemic areas), conducting a thorough physical examination, ordering appropriate laboratory tests (serology, cultures, biopsies), interpreting imaging studies (if necessary), and prescribing and monitoring antifungal therapy.The physician is responsible for ensuring the appropriate selection and administration of treatment, monitoring for complications, and providing patient education and ongoing care.
In simple words: Blastomycosis is a lung infection caused by a fungus.It's spread by breathing in spores, and symptoms can range from mild flu-like illness to severe pneumonia. Doctors diagnose it through tests and treat it with antifungal medicines.
B40.89, Other forms of blastomycosis, is an ICD-10-CM code that classifies various manifestations of blastomycosis not specifically categorized elsewhere. Blastomycosis is a fungal infection primarily affecting the lungs, caused by inhaling spores of the fungus *Blastomyces dermatitidis*.The infection can present with flu-like symptoms (fever, cough, chest pain), or progress to chronic pneumonia, or even acute respiratory distress syndrome (ARDS) in immunocompromised individuals. The infection can also spread to other organs. Diagnosis involves considering patient history, physical exam, laboratory tests (blood, urine, sputum cultures, tissue biopsy), and imaging studies. Treatment typically involves antifungal medications like itraconazole and amphotericin B.
Example 1: A 50-year-old male presents with fever, cough, and chest pain after working outdoors in damp soil in the southeastern United States.Laboratory tests reveal positive cultures for *Blastomyces dermatitidis*, confirming a diagnosis of pulmonary blastomycosis.The physician prescribes itraconazole., A 70-year-old immunocompromised female develops disseminated blastomycosis, with lesions appearing on her skin and bone.A tissue biopsy confirms the diagnosis, and the physician initiates treatment with amphotericin B., A 35-year-old presents with symptoms suggestive of blastomycosis, but initial laboratory results are negative.A repeat blood test and imaging show signs of infection, necessitating longer-term treatment with intravenous antifungal medication.
Complete patient history including travel and exposure history, physical examination findings, laboratory results (blood, urine, sputum cultures, and possibly tissue biopsy results), imaging studies (chest x-ray, CT scan, etc. as indicated), treatment plan, and response to therapy. Documentation should justify medical necessity for testing and treatment.
** Consider other diagnostic tests as needed based on individual patient presentation and clinical scenario. Always cross-reference with other codes in the B40 series to ensure accurate coding.
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- Specialties:Infectious Disease, Pulmonary Medicine, Internal Medicine
- Place of Service:Office, Hospital Inpatient, Hospital Outpatient