2026 ICD-10-CM Diagnosis Code B38.3Cutaneous coccidioidomycosis
ICD-10-CM Codes›A00–B99›B35-B49›B38
- Billable — Valid for Submission
- Not Chronic
B38.3 is a billable ICD-10-CM diagnosis code for cutaneous coccidioidomycosis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607, 974 through 976. Coders also document this condition as coccidioidal granuloma. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Fungal infections and Other specified and unspecified skin disorders.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Coccidioidal granuloma
- Coccidioidomycosis with erythema multiforme
- Cutaneous coccidioidomycosis
- Disseminated cutaneous coccidioidomycosis
- Primary cutaneous coccidioidomycosis
- Subcutaneous coccidioidomycosis
- Subcutaneous mycosis
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Coccidioidomycosis
- cutaneous
- Coccidioidomycosis
- skin
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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
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Convert B38.3 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B38.3Overview
Is B38.3 (Coccidioidomycosis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report cutaneous coccidioidomycosis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does B38.3 group to?
When cutaneous coccidioidomycosis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, 974, 975, 976, with relative weights from 0.8945 to 2.8860 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of B38.3?
Under the General Equivalence Mappings, cutaneous coccidioidomycosis converts to ICD-9-CM 114.1 (prim cutan coccidioid). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
