ICD-10 Code I89.0 – Lymphedema, not elsewhere classified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I89.0 – Lymphedema, not elsewhere classified
What it is
I89.0 identifies lymphedema, a chronic swelling caused by impaired lymphatic drainage. Use it when the record describes lymphatic edema that is not classified elsewhere.
Clinical signs
Typical findings include persistent limb or regional swelling, heaviness, and tissue thickening. Clinical features vary; refer to documentation, especially when the diagnosis is based on exam or imaging.
When to use this code
Use I89.0 when the provider documents lymphedema without a more specific underlying cause or site-specific code. It fits cases described as primary or nonspecific lymphatic swelling when documentation supports lymphedema. If the record names a different disorder, code that condition instead.
Do not use for
Do not use this code for edema from heart, kidney, liver, or venous disease, or for generalized fluid retention. Check documentation if the swelling is postoperative, inflammatory, or otherwise assigned to another category.
Coding tip
Always confirm that the provider explicitly documents lymphedema before assigning I89.0.