A85.1Billable

Adenoviral encephalitis

Chapter
1. Certain infectious and parasitic diseases
Category
A85
Effective date
October 1, 2026

Related codes in category A85

A85Other viral encephalitis, not elsewhere classifiedA85.0Enteroviral encephalitisYesA85.2Arthropod-borne viral encephalitis, unspecifiedYesA85.8Other specified viral encephalitisYes

Frequently asked questions

What is ICD-10 code A85.1?

A85.1 is an ICD-10-CM diagnosis code for Adenoviral encephalitis.

Is A85.1 a billable code?

Yes. A85.1 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is A85.1 in?

A85.1 falls under Chapter 1: Certain infectious and parasitic diseases.

When did A85.1 become effective?

A85.1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to A85.1?

A85.1 belongs to category A85, which includes 4 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.