ICD-10-CM › L00-L99 › L00-L08 › L codes › L04

L04

Acute lymphadenitis

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 6 more specific codes instead:

  • L04.0 Acute lymphadenitis of face, head and neck
  • L04.1 Acute lymphadenitis of trunk
  • L04.2 Acute lymphadenitis of upper limb
  • L04.3 Acute lymphadenitis of lower limb
  • L04.8 Acute lymphadenitis of other sites
  • L04.9 Acute lymphadenitis, unspecified

What has happened to this code

Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2012 Added to the draft code set draft Acute lymphadenitis

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

This code

Excludes1 - never coded here

  • 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

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

Inherited from the L00-L08 section Infections of the skin and subcutaneous tissue (L00-L08)

Excludes2 - not included here

  • hordeolum (H00.0)
  • infective dermatitis (L30.3)
  • local infections of skin classified in Chapter 1
  • lupus panniculitis (L93.2)
  • panniculitis NOS (M79.3)
  • panniculitis of neck and back (M54.0-)
  • Perlèche NOS (K13.0)
  • Perlèche due to candidiasis (B37.0)
  • Perlèche due to riboflavin deficiency (E53.0)
  • pyogenic granuloma (L98.0)
  • relapsing panniculitis [Weber-Christian] (M35.6)
  • viral warts (B07.-)
  • zoster (B02.-)

Use additional code

  • code (B95-B97) to identify infectious agent.