L02.821 Furuncle of head [any part, except face]

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 L02.82 Furuncle of other sites

Applicable to

• Boil of other sites
• Folliculitis of other sites

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 680.8 Carbuncle and furuncle of other specified sites (approximate)

Code annotations containing back-references to L02.821

Back-references to L02.8

• Type 2 Excludes: L02.0 Cutaneous abscess, furuncle and carbuncle of face ("abscess of head [any part, except face] (L02.8)")

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.-)")

Diagnosis Index entries for L02.821

• Furuncle › head
• Furuncle › scalp

Nearby codes

• L02.8 Cutaneous abscess, furuncle and carbuncle of other sites
• L02.81 Cutaneous abscess of other sites
• L02.811 Cutaneous abscess of head [any part, except face]
• L02.818 Cutaneous abscess of other sites
• L02.82 Furuncle of other sites
• L02.821 Furuncle of head [any part, except face] (this code)
• L02.828 Furuncle of other sites
• L02.83 Carbuncle of other sites
• L02.831 Carbuncle of head [any part, except face]
• L02.838 Carbuncle of other sites
• L02.9 Cutaneous abscess, furuncle and carbuncle, unspecified