I88 ICD-10-CM Code: Nonspecific lymphadenitis
A clear reference for the official code description, hierarchy, and related coding information from the April 2026 U.S. release.
Code definition
Official description
I88Nonspecific lymphadenitis
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where I88 sits
- 1
Chapter 9
Diseases of the circulatory system (I00-I99)
- 2
Section
Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89)
- 3
Category I88
Nonspecific lymphadenitis
- 4
Code I88
Nonspecific lymphadenitis
More specific choices
Codes under I88
I88 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for I88.
Code first
No “code first” instruction is listed for I88.
Use additional code
No “use additional code” instruction is listed for I88.
Excludes1
Conditions that should not be reported together with this code.
- acute lymphadenitis, except mesenteric (L04.-)
- enlarged lymph nodes NOS (R59.-)
- human immunodeficiency virus [HIV] disease resulting in generalized lymphadenopathy (B20)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for I88.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code I88 mean?
I88 is the April 2026 U.S. ICD-10-CM code for “Nonspecific lymphadenitis.”
Is I88 a billable or specific ICD-10-CM code?
No. I88 has more specific child codes in the April 2026 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is I88 located in ICD-10-CM?
I88 is listed in Chapter 9, Diseases of the circulatory system (I00-I99), within Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89) (I80–I89), under category I88, Nonspecific lymphadenitis.
What coding notes are listed for I88?
No inclusion terms are listed for I88 in this reference record. No code-first instruction is listed. Excludes1 notes: acute lymphadenitis, except mesenteric (L04.-); enlarged lymph nodes NOS (R59.-); human immunodeficiency virus [HIV] disease resulting in generalized lymphadenopathy (B20). No Excludes2 note is listed.
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