ICD-10-CM > I00-I99 > I80-I89 > I88 I88 Nonspecific lymphadenitis Non-Billable/Non-Specific Type 1 Excludes acute lymphadenitis, except mesenteric (L04.-)enlarged lymph nodes NOS (R59.-)human immunodeficiency virus [HIV] disease resulting in generalized lymphadenopathy (B20) Codes I88.0Nonspecific mesenteric lymphadenitisI88.1Chronic lymphadenitis, except mesentericI88.8Other nonspecific lymphadenitisI88.9Nonspecific lymphadenitis, unspecified