B43

Non-billable

Chromomycosis and pheomycotic abscess

B43 is the ICD-10-CM code for Chromomycosis and pheomycotic abscess. It is a non-billable category code — use a more specific child code such as B43.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
5
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

What this means — in plain language

MedlinePlus · NIH

An abscess is a pocket of pus. You can get an abscess almost anywhere in your body. When an area of your body becomes infected, your body's immune system tries to fight the infection. White blood cells go to the infected area, collect within the damaged tissue, and cause inflammation. During this process, pus forms. Pus is a mixture of living and dead white blood cells, germs, and dead tissue. Bacteria, viruses,…

Read more about Abscess at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code B43?
B43 is the ICD-10-CM code for "Chromomycosis and pheomycotic abscess". It falls under A00-B99 Certain infectious and parasitic diseases.
Is B43 a billable code?
No — B43 is a non-billable header code. Use a more specific child code (such as B43.0) for billing.
What are the subcodes of B43?
B43 has 5 more specific child codes, including B43.0, B43.1, B43.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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