L04

L04: Acute lymphadenitis

Non-billable headerICD-10-CM

L04 is a non-billable header ICD-10-CM code for acute lymphadenitis. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

chronic or subacute lymphadenitis, except mesenteric (I88.1)
enlarged lymph nodes (R59.-)
human immunodeficiency virus [HIV] disease resulting in generalized lymphadenopathy (B20)
lymphadenitis NOS (I88.9)
nonspecific mesenteric lymphadenitis (I88.0)

Includes

Conditions this code covers.

abscess (acute) of lymph nodes, except mesenteric
acute lymphadenitis, except mesenteric

Other codes that can never be billed with L04

Their own Excludes1 notes name this code, so the conflict is not listed above.

I88Nonspecific lymphadenitis
R59Enlarged lymph nodes

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead L04

6 child codes. Green means billable.