I88.9 – Nonspecific lymphadenitis, unspecified

ICD-10-CM 2027 diagnosis code · Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified

Billable code

ICD-10-CM code I88.9

Code: I88.9 (claims format: I889)
Description: Nonspecific lymphadenitis, unspecified
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: I80-I89 Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
Parent codes: I88

Notes for I88.9

Applicable to:

Lymphadenitis NOS

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I88 – Nonspecific lymphadenitis

Excludes1 (not coded here):

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

Index terms for I88.9

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in I88

I88.0 – Nonspecific mesenteric lymphadenitisBillable
I88.1 – Chronic lymphadenitis, except mesentericBillable
I88.8 – Other nonspecific lymphadenitisBillable

Frequently asked questions

What is ICD-10 code I88.9?

I88.9 is the ICD-10-CM code for nonspecific lymphadenitis, unspecified, in the block I80-I89 (Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified).

Is I88.9 a billable code?

Yes. I88.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I88.9 belong to?

It belongs to category I88 – Nonspecific lymphadenitis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.