2027 ICD-10-CM Diagnosis Code I89.9Noninfective disorder of lymphatic vessels and lymph nodes, unspecified

ICD-10-CM Codes›I00–I99›I80-I89›I89

ICD-10-CM I89.9
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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 2027 (October 1, 2026 through September 30, 2027) 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

ICD-10-CM Code
I89.9
Billable Status
Yes — Valid for Submission
Code Describes
Noninfective disorder of lymphatic vessels and lymph nodes, unspecified
Short Description
Noninfective disorder of lymphatic vessels and nodes, unsp
Parent Code
I89
Other noninfective disorders of lymphatic vessels and lymph nodes

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI80-I89Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
CategoryI89Other noninfective disorders of lymphatic vessels and lymph nodes
This CodeI89.9Noninfective disorder of lymphatic vessels and lymph nodes, unspecified

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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to I89.9: its own notes plus those printed at I89 and Chapter 9. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Disease of lymphatic vessels NOS

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From I89 Other noninfective disorders of lymphatic vessels and lymph nodes applies to 4 codes
  • chylocele, tunica vaginalis (nonfilarial) NOS (N50.89)
  • enlarged lymph nodes NOS (R59.-)
  • filarial chylocele (B74.-)
  • hereditary lymphedema (Q82.0)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 9 (I00-I99) Diseases of the circulatory system applies to 1,433 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR CIR039
Other specified diseases of veins and lymphatics
Default principal diagnosis: inpatient Yes · outpatient Yes

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.

ICD-9-CM
457.9 Noninfect lymph dis NOS
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

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 816, 814, 815, with relative weights from 0.7378 to 2.0727 depending on complications. Higher weights mean higher Medicare reimbursement.

Can I89.9 be reported with N50.89?

Not as a rule. The Excludes1 note at I89, which applies to I89.9, lists "chylocele, tunica vaginalis (nonfilarial) NOS (N50.89)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

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.