Emergency: 119
AMDA-IMIC

I88 Nonspecific lymphadenitis

Category / Non-billable header 4 subcodes

Block: Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89)

Excludes 1 (cannot be coded together)

  • acute lymphadenitis, except mesenteric (L04.-)
  • enlarged lymph nodes NOS (R59.-)
  • human immunodeficiency virus [HIV] disease resulting in generalized lymphadenopathy (B20)

Subcodes

Each subcode links to a detail page with full clinical annotations.

Code Description Billable
I88..0 Nonspecific mesenteric lymphadenitis Yes
I88..1 Chronic lymphadenitis, except mesenteric Yes
I88..8 Other nonspecific lymphadenitis Yes
I88..9 Nonspecific lymphadenitis, unspecified Yes

Last reviewed: September 2026