ICD-10-CM I89.1 is the diagnosis code for Lymphangitis. This code falls under the section "Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified" within Chapter 9 — Diseases of the circulatory system (I00-I99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as I89.1. They are mutually exclusive:
Understanding where I89.1 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, I89.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
I89.1 is the ICD-10-CM diagnosis code for "Lymphangitis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of I89.1 is I89 ("Other noninfective disorders of lymphatic vessels and lymph nodes"). I89.1 provides a more specific classification within this category.
I89.1 is located in Section I80-I89 — "Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified" within Chapter 9 of the ICD-10-CM Tabular List.
Use I89.1 when the patients documented diagnosis matches "Lymphangitis" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Lymphangitis is I89.1.
Yes, I89.1 can be used as a primary diagnosis code since it is billable and specific.
I89.1 is in Chapter 9 of the ICD-10-CM Tabular List.
Type 1 Excludes for I89.1 include: acute lymphangitis (L03.-).
Yes, I89.1 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.