I88.0
✓ BillableNonspecific mesenteric lymphadenitis
Diseases of the circulatory system (I00-I99)
Also Known As
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • acute lymphadenitis, except mesenteric (L04.-)
- • enlarged lymph nodes NOS (R59.-)
- • human immunodeficiency virus [HIV] disease resulting in generalized lymphadenopathy (B20)
Clinical Description
ICD-10-CM code I88.0 represents nonspecific mesenteric lymphadenitis. This code falls under the Diseases of the circulatory system (I00-I99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory. Coders should note that I88.0 has 3 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code I88.0?
ICD-10-CM code I88.0 is "Nonspecific mesenteric lymphadenitis". It belongs to the category: Diseases of the circulatory system (I00-I99).
Is I88.0 a billable ICD-10 code?
Yes, I88.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
What codes are excluded with I88.0?
I88.0 has 3 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Related Codes in I88
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)