2026 ICD-10-CM Diagnosis Code I89.9Noninfective disorder of lymphatic vessels and lymph nodes, unspecified
ICD-10-CM Codes›I00–I99›I80-I89›I89
- Billable — Valid for Submission
- Chronic Condition
I89.9 is a billable ICD-10-CM diagnosis code for noninfective disorder of lymphatic vessels and lymph nodes, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 814 through 816. Coders also document this condition as acute disease of lymphatic vessel. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified diseases of veins and lymphatics.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute disease of lymphatic vessel
- Chronic disease of lymphatic vessels
- Disorder of lymph node
- Disorder of lymphatic system
- Disorder of lymphatic vessel
- Disorder of lymphatics of head
- Disorders of lymph node and lymphatics
- Non-infectious disorder of lymphatics
- Non-infective lymphatic disorders
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Disease of lymphatic vessels NOS
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Disease, diseased - See Also: Syndrome;
- gland (lymph) - I89.9
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Disease, diseased
- gland (lymph)
- Disease, diseased
- lymphatic (gland) (system) (channel) (vessel)
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Lymphatic Diseases
The lymphatic system is a network of tissues and organs. It is made up of:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert I89.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I89.9Overview
Is I89.9 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report noninfective disorder of lymphatic vessels and lymph nodes, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does I89.9 group to?
When noninfective disorder of lymphatic vessels and lymph nodes, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 814, 815, 816, with relative weights from 0.6320 to 2.1267 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of I89.9?
Under the General Equivalence Mappings, noninfective disorder of lymphatic vessels and lymph nodes, unspecified converts to ICD-9-CM 457.9 (noninfect lymph dis NOS). The mapping is a direct match.
Footnotes
[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:
- The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
- The condition places limitations on self-care, independent living, and social interactions.
