10ICD Code Hub

I88

Header — not billable

Nonspecific lymphadenitis

The ICD-10 code for nonspecific lymphadenitis is I88.

I88 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.

Clinical notes

Excludes1 (not coded here)

An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).

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

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

Child codes under I88

Related codes in this category