B59

Billable

Pneumocystosis

B59 is the ICD-10-CM code for Pneumocystosis. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
A00-B99
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

What this means — in plain language

MedlinePlus · NIH

What is Pneumocystis jirovecii ? Pneumocystis jirovecii is a fungus that is common throughout the world. Many people have been exposed to it as children. Some people have the fungus in their lungs. If you are healthy, it usually will not make you sick. But it can make you sick if you have a weakened immune system , for example if you: Have HIV Have an autoimmune disease Have cancer Have a chronic (long-lasting) lung…

Read more about Pneumocystis Infections at MedlinePlus ↗

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

Includes

  • Pneumonia due to Pneumocystis carinii
  • Pneumonia due to Pneumocystis jirovecii

Frequently asked questions

What is ICD-10 code B59?
B59 is the ICD-10-CM code for "Pneumocystosis". It falls under A00-B99 Certain infectious and parasitic diseases.
Is B59 a billable code?
Yes — B59 is a billable, specific ICD-10-CM code valid for reimbursement.

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

Look up another ICD-10 code or condition

Powered by Eleplan

Free ICD-10 lookup is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, with Ellie, your AI care assistant, on top of it. Free to start.