A20

Non-billable

Plague

A20 is the ICD-10-CM code for Plague. It is a non-billable category code — use a more specific child code such as A20.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
7
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

What this means — in plain language

MedlinePlus · NIH

Plague is an infection caused by the bacterium Yersinia pestis. The bacteria are found mainly in rats and in the fleas that feed on them. People and other animals can get plague from rat or flea bites. In the past, plague destroyed entire civilizations. Today plague is uncommon, due to better living conditions and antibiotics. There are three forms of plague: Bubonic plague causes the tonsils, adenoids, spleen, and…

Read more about Plague at MedlinePlus ↗

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

Includes

  • infection due to Yersinia pestis

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Conditions mapped to this code

MedlinePlus · NIH

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Frequently asked questions

What is ICD-10 code A20?
A20 is the ICD-10-CM code for "Plague". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A20 a billable code?
No — A20 is a non-billable header code. Use a more specific child code (such as A20.0) for billing.
What are the subcodes of A20?
A20 has 7 more specific child codes, including A20.0, A20.1, A20.2.

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

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