I88Header code — not billable

Nonspecific lymphadenitis

Chapter
9. Diseases of the circulatory system
Category
I88
Effective date
October 1, 2026

Related codes in category I88

I88.0Nonspecific mesenteric lymphadenitisYesI88.1Chronic lymphadenitis, except mesentericYesI88.8Other nonspecific lymphadenitisYesI88.9Nonspecific lymphadenitis, unspecifiedYes

Frequently asked questions

What is ICD-10 code I88?

I88 is an ICD-10-CM diagnosis code for Nonspecific lymphadenitis.

Is I88 a billable code?

No. I88 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 I88 in?

I88 falls under Chapter 9: Diseases of the circulatory system.

When did I88 become effective?

I88 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to I88?

I88 belongs to category I88, 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.