L02.434 Carbuncle of left upper limb

Billable ICD-10-CM code, FY2026.

Applies from L02 Cutaneous abscess, furuncle and carbuncle

Excludes2 (not included here)

• abscess of anus and rectal regions (K61.-)
• abscess of female genital organs (external) (N76.4)
• abscess of male genital organs (external) (N48.2, N49.-)

Use additional code

• code to identify organism (B95-B96)

Applies from L02.4 Cutaneous abscess, furuncle and carbuncle of limb

Excludes2 (not included here)

• 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-)

MS-DRG index

Defines the logic of DRG(s) 602-603 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 680.3 Carbuncle and furuncle of upper arm and forearm (approximate)

Code annotations containing back-references to L02.434

Back-references to L02.4

• Type 2 Excludes: L02.2 Cutaneous abscess, furuncle and carbuncle of trunk ("abscess of hip (L02.4)")

Back-references to L02

• Type 2 Excludes: L89 Pressure ulcer ("skin infections (L00-L08)")
• Type 2 Excludes: L97 Non-pressure chronic ulcer of lower limb, not elsewhere classified ("skin infections (L00-L08)")
• Type 2 Excludes: L98.4 Non-pressure chronic ulcer of skin, not elsewhere classified ("skin infections (L00-L08)")
• Type 2 Excludes: L98.A Non-pressure chronic ulcer of upper limb, not elsewhere classified ("skin infections (L00-L08)")
• Use Additional: T65.84 Toxic effect of xylazine ("cutaneous abscess, furuncle and carbuncle (L02.-)")

Nearby codes

• L02.429 Furuncle of limb, unspecified
• L02.43 Carbuncle of limb
• L02.431 Carbuncle of right axilla
• L02.432 Carbuncle of left axilla
• L02.433 Carbuncle of right upper limb
• L02.434 Carbuncle of left upper limb (this code)
• L02.435 Carbuncle of right lower limb
• L02.436 Carbuncle of left lower limb
• L02.439 Carbuncle of limb, unspecified
• L02.5 Cutaneous abscess, furuncle and carbuncle of hand
• L02.51 Cutaneous abscess of hand