B25Header code — not billable

Cytomegaloviral disease

Chapter
1. Certain infectious and parasitic diseases
Category
B25
Effective date
October 1, 2026

Related codes in category B25

B25.0Cytomegaloviral pneumonitisYesB25.1Cytomegaloviral hepatitisYesB25.2Cytomegaloviral pancreatitisYesB25.8Other cytomegaloviral diseasesYesB25.9Cytomegaloviral disease, unspecifiedYes

Frequently asked questions

What is ICD-10 code B25?

B25 is an ICD-10-CM diagnosis code for Cytomegaloviral disease.

Is B25 a billable code?

No. B25 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 B25 in?

B25 falls under Chapter 1: Certain infectious and parasitic diseases.

When did B25 become effective?

B25 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to B25?

B25 belongs to category B25, which includes 5 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.