ICD-10 Code I88.8 – Other nonspecific lymphadenitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I88.8 – Other nonspecific lymphadenitis
What it is
I88.8 identifies lymph node inflammation that is not specified as a particular type or cause. Use it when the record documents nonspecific lymphadenitis and no more precise code is supported.
Clinical signs
Findings may include enlarged, tender lymph nodes and local inflammation. Clinical features vary; refer to documentation for the involved region and whether the cause is identified.
When to use this code
Use I88.8 when the clinician documents other nonspecific lymphadenitis and does not name a more specific subtype. It is appropriate when the note confirms lymph node inflammation but leaves the etiology or exact category unspecified. If another diagnosis is documented, code that condition instead.
Do not use for
Do not use this code for lymphadenitis with a known infectious cause or for a more specific lymph node disorder. If documentation is unclear, check documentation before assigning a nonspecific code.
Coding tip
Code the most specific lymphadenitis term documented, and query for cause or site when the record does not clearly support I88.8.