L04.9

L04.9: Acute lymphadenitis, unspecified

Billable / specific codeICD-10-CM

L04.9 is a billable, specific ICD-10-CM code for acute lymphadenitis, unspecified. It is valid for submission on a claim.

Check L04.9 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above L04.9

A category’s note binds every code beneath it.

Written on L04: Acute lymphadenitis

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)

Other codes that can never be billed with L04.9

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.

Alphabetic index entries that lead here

Adenitis›acute, unspecified site
Adenitis›gangrenous
Lymphadenitis›acute

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under L04