2027 ICD-10-CM Diagnosis Code I88Nonspecific lymphadenitis

ICD-10-CM Codes›I00–I99›I80-I89›I88

ICD-10-CM I88
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

I88 is a non-billable ICD-10-CM category code for nonspecific lymphadenitis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as I88.0, I88.1, I88.8, and I88.9.

Code Identity

ICD-10-CM Code
I88
Billable Status
No — Non-Billable Category
Code Describes
Nonspecific lymphadenitis
Short Description
Nonspecific lymphadenitis
Same as the full description in the CMS dataset.
Chapter
I80-I89
Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI80-I89Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
CategoryI88Nonspecific lymphadenitis
This CodeI88Nonspecific lymphadenitis

Specific Coding for Nonspecific lymphadenitisOverview

Non-specific codes like I88 require more characters. Use one of these billable codes instead:

  • Use I88.0 for Nonspecific mesenteric lymphadenitis

  • Use I88.1 for Chronic lymphadenitis, except mesenteric

  • Use I88.8 for Other nonspecific lymphadenitis

  • Use I88.9 for Nonspecific lymphadenitis, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to I88: its own notes plus those printed at Chapter 9. A note printed at a category, block or chapter applies to every code under it.

Excludes1

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

  • acute lymphadenitis, except mesenteric (L04.-)
  • enlarged lymph nodes NOS (R59.-)
  • human immunodeficiency virus [HIV] disease resulting in generalized lymphadenopathy (B20)

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.

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.

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 I88Overview

What is the ICD-10 code for nonspecific lymphadenitis?

I88 is the ICD-10-CM category for nonspecific lymphadenitis, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is I88 (Nonspecific lymphadenitis) a billable code?

No. This is a category header that groups the codes for nonspecific lymphadenitis, and headers cannot be submitted on claims. Claims for nonspecific lymphadenitis need a more specific code from this category, such as I88.0, I88.1, and I88.8.

Can I88 be reported with a code from L04?

Not as a rule. The Excludes1 note on I88 lists "acute lymphadenitis, except mesenteric (L04.-)". 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).