A20Header code — not billable

Plague

Chapter
1. Certain infectious and parasitic diseases
Category
A20
Effective date
October 1, 2026

Related codes in category A20

A20.0Bubonic plagueYesA20.1Cellulocutaneous plagueYesA20.2Pneumonic plagueYesA20.3Plague meningitisYesA20.7Septicemic plagueYesA20.8Other forms of plagueYesA20.9Plague, unspecifiedYes

Frequently asked questions

What is ICD-10 code A20?

A20 is an ICD-10-CM diagnosis code for Plague.

Is A20 a billable code?

No. A20 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is A20 in?

A20 falls under Chapter 1: Certain infectious and parasitic diseases.

When did A20 become effective?

A20 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to A20?

A20 belongs to category A20, which includes 7 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.