2027 ICD-10-CM Diagnosis Code B38.3Cutaneous coccidioidomycosis
ICD-10-CM Codes›A00–B99›B35-B49›B38
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
B38.3 is a billable ICD-10-CM diagnosis code for cutaneous coccidioidomycosis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 606 through 607, 974 through 976. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 9 closely related codes. 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
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to B38.3: 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.
- 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.
- 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.
- code to identify resistance to antimicrobial drugs (Z16.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Convert B38.3 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B38.3Overview
What is the ICD-10 code for cutaneous coccidioidomycosis?
The ICD-10-CM code for cutaneous coccidioidomycosis is B38.3 (sometimes written as B383). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
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, 2026 through September 30, 2027.
What MS-DRG does B38.3 group to?
When cutaneous coccidioidomycosis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 974, 976, 607, 975, 606, with relative weights from 0.7879 to 3.0488 depending on complications. Higher weights mean higher Medicare reimbursement.
Is B38.3 a CC or MCC?
CMS lists B38.3 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 9 closely related codes in its exclusion list.
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.
