L04.2

Acute lymphadenitis of upper limb

Billable code

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · L04.2
Synonyms

Acute lymphadenitis of axilla Acute lymphadenitis of shoulder

Inherited from L04Acute lymphadenitis
Includes

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

Excludes 1

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)

Inherited from L00-L08Infections of the skin and subcutaneous tissue
Excludes 2

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 (B95-B97) to identify infectious agent.

Inherited from chapter 12Diseases of the skin and subcutaneous tissue
Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) lipomelanotic reticulosis (I89.8) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) systemic connective tissue disorders (M30-M36) viral warts (B07.-)

Official Guidelines for L04.2

FY 2026 ›