Alphabetic Index FY2027

L02.42

Furuncle of limb

FY2027Chapter 12: Diseases of the skin and subcutaneous tissue/L00–L08 Infections of the skin and subcutaneous tissue

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

L02.42 is a non-billable ICD-10-CM code header for furuncle of limb. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are L02.421 Furuncle of right axilla, L02.422 Furuncle of left axilla, L02.423 Furuncle of right upper limb, L02.424 Furuncle of left upper limb and 3 more. Its coding notes include a Use additional code instruction and 29 Excludes2 entries.

Use additional code

Add the listed code as a secondary code, if known.

Inherited from L02 Cutaneous abscess, furuncle and carbuncle
  • code to identify organism (B95-B96)
Also from chapter/block level (1 note)
Inherited from L00–L08 Infections of the skin and subcutaneous tissue
  • code (B95-B97) to identify infectious agent.

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from L02.4 Cutaneous abscess, furuncle and carbuncle of limb
  • Cutaneous abscess, furuncle and carbuncle of groin (L02.214, L02.224, L02.234)
  • Cutaneous abscess, furuncle and carbuncle of hand (L02.5-)
  • Cutaneous abscess, furuncle and carbuncle of foot (L02.6-)
Inherited from L02 Cutaneous abscess, furuncle and carbuncle
  • abscess of anus and rectal regions (K61.-)
  • abscess of female genital organs (external) (N76.4)
  • abscess of male genital organs (external) (N48.2, N49.-)
Also from chapter/block level (23 notes)
Inherited from L00–L08 Infections of the skin and subcutaneous tissue
  • 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.-)
Inherited from Chapter 12 Diseases of the skin and subcutaneous tissue
  • 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.-)

Inclusion terms

Conditions classified to this code.

This code
  • Boil of limb
  • Folliculitis of limb

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 3 entries

More specific codes under L02.42 7