2027 ICD-10-CM Diagnosis Code B43.0Cutaneous chromomycosis
ICD-10-CM Codes›A00–B99›B35-B49›B43
- Billable — Valid for Submission
- Not Chronic
B43.0 is a billable ICD-10-CM diagnosis code for cutaneous chromomycosis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 867 through 869. Coders also document this condition as chromoblastomycosis caused by Fonsecaea pedrosoi. 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.
- Chromoblastomycosis caused by Fonsecaea pedrosoi
- Cutaneous chromoblastomycosis
- Cutaneous chromoblastomycotic abscess
- Infection by Cladosporium carrionii
- Infection by Fonsecaea pedrosoi
- Infection by Phialophora verrucosa
- Lymphocutaneous chromoblastomycosis
- Primary chromoblastomycotic nodule
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to B43.0: 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
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Dermatitis verrucosa
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.
Patient EducationClinical
Fungal Infections
If you have ever had athlete's foot or a yeast infection, you can blame a fungus. A fungus is a primitive organism. Mushrooms, mold and mildew are examples. Fungi live in air, in soil, on plants and in water. Some live in the human body. Only about half of all types of fungi are harmful.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert B43.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B43.0Overview
What is the ICD-10 code for cutaneous chromomycosis?
The ICD-10-CM code for cutaneous chromomycosis is B43.0 (sometimes written as B430). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is B43.0 (Chromomycosis and pheomycotic abscess) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report cutaneous chromomycosis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does B43.0 group to?
When cutaneous chromomycosis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 867, 869, 868, with relative weights from 0.6784 to 2.1855 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of B43.0?
Under the General Equivalence Mappings, cutaneous chromomycosis converts to ICD-9-CM 117.2 (chromoblastomycosis). The mapping is approximate, so confirm the match fits the documentation.
