Nonspecific lymphadenitis (I88) ICD-10-CM
The I88 code range covers nonspecific lymphadenitis with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the I88 Range 5 codes · 4 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the I88 range.
Chronic Lymphadenitis
Inflammation of the lymph nodes that is chronic in nature.
Lymphadenitis
Inflammation of the lymph nodes.
About the I88 Code Range
Lymphadenitis means inflammation of the lymph nodes. This category describes nonspecific forms of that inflammation.
The subdivisions separate mesenteric lymphadenitis, involving nodes in tissue that supports the intestines, from chronic lymphadenitis outside that site. I88.0 identifies the mesenteric form, and I88.1 identifies the chronic form outside that site. I88.8 identifies other nonspecific lymphadenitis, while I88.9 identifies unspecified nonspecific lymphadenitis.
Questions About This Page
How many billable codes are in the I88 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the I88 range classify?
The range classifies nonspecific lymphadenitis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
