L03.012 Cellulitis of left finger

Billable ICD-10-CM code, FY2026.

Applies from L03 Cellulitis and acute lymphangitis

Excludes2 (not included here)

• cellulitis of anal and rectal region (K61.-)
• cellulitis of external auditory canal (H60.1)
• cellulitis of eyelid (H00.0)
• cellulitis of female external genital organs (N76.4)
• cellulitis of lacrimal apparatus (H04.3)
• cellulitis of male external genital organs (N48.2, N49.-)
• cellulitis of mouth (K12.2)
• cellulitis of nose (J34.0)
• eosinophilic cellulitis [Wells] (L98.3)
• febrile neutrophilic dermatosis [Sweet] (L98.2)
• lymphangitis (chronic) (subacute) (I89.1)

Applies from L03.0 Cellulitis and acute lymphangitis of finger and toe

Applicable to

• Infection of nail
• Onychia
• Paronychia
• Perionychia

Applies from L03.01 Cellulitis of finger

Applicable to

• Felon
• Whitlow

Excludes1 (never code together)

• herpetic whitlow (B00.89)

MS-DRG index

Defines the logic of DRG(s) 573-575 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 681.00 Cellulitis and abscess of finger, unspecified (approximate)
• 681.01 Felon (approximate)
• 681.02 Onychia and paronychia of finger (approximate)

Code annotations containing back-references to L03.012

Back-references to L03.01

• Type 2 Excludes: L03.11 Cellulitis of other parts of limb ("cellulitis of fingers (L03.01-)")

Back-references to L03.0

• Type 2 Excludes: L60 Nail disorders ("onychia and paronychia (L03.0-)")

Back-references to L03

• Type 1 Excludes: I89.1 Lymphangitis ("acute lymphangitis (L03.-)")
• 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 ("cellulitis and acute lymphangitis (L03.-)")

Nearby codes

• L03 Cellulitis and acute lymphangitis
• L03.0 Cellulitis and acute lymphangitis of finger and toe
• L03.01 Cellulitis of finger
• L03.011 Cellulitis of right finger
• L03.012 Cellulitis of left finger (this code)
• L03.019 Cellulitis of unspecified finger
• L03.02 Acute lymphangitis of finger
• L03.021 Acute lymphangitis of right finger
• L03.022 Acute lymphangitis of left finger
• L03.029 Acute lymphangitis of unspecified finger