2027 ICD-10-CM Diagnosis Code B38Coccidioidomycosis

ICD-10-CM Codes›A00–B99›B35-B49›B38

ICD-10-CM B38
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Coccidioidomycosis
Same as the full description in the CMS dataset.
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to B38: its own notes plus those printed at block B35-B49 and Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block B35-B49 Mycoses applies to 104 codes
  • hypersensitivity pneumonitis due to organic dust (J67.-)
  • mycosis fungoides (C84.0-)
From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Clinical InformationClinical

  • 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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About B38Overview

What is the ICD-10 code for coccidioidomycosis?

B38 is the ICD-10-CM category for coccidioidomycosis, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.