2026 ICD-10-CM Diagnosis Code B38Coccidioidomycosis

ICD-10-CM Codes›A00–B99›B35-B49›B38

ICD-10-CM B38
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B38 is a non-billable ICD-10-CM category code for coccidioidomycosis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as B38.0, B38.1, B38.2, and B38.3.

Code Identity

ICD-10-CM Code
B38
Billable Status
No — Non-Billable Category
Code Describes
Coccidioidomycosis
Chapter
B35-B49
Mycoses

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB35-B49Mycoses
CategoryB38Coccidioidomycosis
This CodeB38Coccidioidomycosis

Specific Coding for CoccidioidomycosisOverview

Non-specific codes like B38 require more characters. Use one of these billable codes instead:

  • Use B38.0 for Acute pulmonary coccidioidomycosis

  • Use B38.1 for Chronic pulmonary coccidioidomycosis

  • Use B38.2 for Pulmonary coccidioidomycosis, unspecified

  • Use B38.3 for Cutaneous coccidioidomycosis

  • Use B38.4 for Coccidioidomycosis meningitis

  • Use B38.7 for Disseminated coccidioidomycosis

  • B38.8 for Other forms of coccidioidomycosis

  • Use B38.81 for Prostatic coccidioidomycosis

  • Use B38.89 for Other forms of coccidioidomycosis

  • Use B38.9 for Coccidioidomycosis, unspecified

Clinical InformationClinical

  • Coccidioidal Meningitis

    meningitis caused by a fungus of the genus coccidioides, endemic to the southwestern united states, south-central washington state, and parts of mexico and central and south america.

  • Coccidioidomycosis

    infection with a fungus of the genus coccidioides, endemic to the southwestern united states. it is sometimes called valley fever but should not be confused with rift valley fever. infection is caused by inhalation of airborne, fungal particles known as arthroconidia, a form of fungal spores. a primary form is an acute, benign, self-limited respiratory infection. a secondary form is a virulent, severe, chronic, progressive granulomatous disease with systemic involvement. it can be detected by use of coccidioidin.

Patient EducationClinical

Valley Fever

Valley Fever is a disease caused by a fungus (or mold) called Coccidioides. The fungi live in the soil of dry areas like the southwestern U.S. You get it from inhaling the spores of the fungus. The infection cannot spread from person to person.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B38Overview

Is B38 (Coccidioidomycosis) a billable code?

No. This is a category header that groups the codes for coccidioidomycosis, and headers cannot be submitted on claims. Claims for coccidioidomycosis need a more specific code from this category, such as B38.0, B38.1, and B38.2.