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L02.4 ICD-10 – Cutaneous Abscess of Limb
L02.4 is the ICD-10 code for a cutaneous abscess of a limb. It refers to a localized collection of pus in the skin or subcutaneous tissue of the arm or leg.
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L02.4 is the ICD-10 code for a cutaneous abscess of a limb. It refers to a localized collection of pus in the skin or subcutaneous tissue of the arm or leg.
What does ICD-10 Code L02.4 mean?
The ICD-10 code L02.4 stands for a cutaneous abscess of a limb, affecting either an arm or a leg. An abscess is an encapsulated cavity within the tissue filled with pus, typically caused by a bacterial infection. It may involve superficial skin layers or extend into deeper subcutaneous tissue. L02.4 belongs to the diagnostic group L02 (Cutaneous abscess, furuncle and carbuncle) within Chapter XII of the ICD-10 classification system.
Causes
Cutaneous abscesses of the limbs are commonly caused by:
- Bacterial infections: The most frequent pathogen is Staphylococcus aureus, including methicillin-resistant strains (MRSA).
- Skin injuries: Cuts, insect bites, or puncture wounds can serve as entry points for bacteria.
- Folliculitis: Inflammation of hair follicles that may progress into an abscess.
- Ingrown hairs: Particularly common on the legs.
- Compromised immune system: Conditions such as diabetes mellitus, HIV infection, or the use of immunosuppressive medications increase the risk.
Symptoms
Typical signs of a cutaneous abscess of a limb include:
- Painful, swollen, and reddened skin area
- Fluctuation (a palpable sensation of fluid beneath the skin)
- Local warmth over the affected area
- Possible spontaneous rupture and drainage of pus
- Systemic symptoms such as fever or fatigue in larger or deeper abscesses
Diagnosis
The diagnosis of a cutaneous abscess (L02.4) is primarily clinical, based on inspection and palpation. Additional investigations may include:
- Ultrasound: To assess the depth and extent of the abscess and rule out involvement of deeper structures.
- Blood tests: When systemic infection is suspected (elevated inflammatory markers such as CRP and white blood cell count).
- Wound swab and culture: To identify the causative organism and determine antibiotic sensitivity.
Treatment
The standard treatment for a cutaneous abscess is incision and drainage:
- Incision and drainage: A physician opens the abscess under local anaesthesia, drains the pus, and irrigates the cavity. This is the most effective treatment.
- Antibiotic therapy: Not always required, but recommended for larger abscesses, immunocompromised patients, systemic signs of infection, or suspected MRSA. Common antibiotics include flucloxacillin, clindamycin, or trimethoprim-sulfamethoxazole.
- Warm compresses: May promote spontaneous maturation of small, early-stage abscesses.
- Wound care: Regular wound monitoring and care after drainage is important to prevent recurrence.
Complications
If left untreated or inadequately managed, abscesses can lead to the following complications:
- Cellulitis: Spread of infection into surrounding tissue
- Sepsis: Life-threatening systemic infection
- Osteomyelitis: Bone infection if deeper structures are involved
- Recurrence: Repeat abscess formation if treatment is incomplete
References
- World Health Organization (WHO): ICD-10 International Statistical Classification of Diseases and Related Health Problems, 10th Revision. Chapter XII, Block L00-L99.
- Stulberg DL, Penrod MA, Blatny RA. Common bacterial skin infections. Am Fam Physician. 2002;66(1):119-124.
- Stevens DL et al. Practice Guidelines for the Diagnosis and Management of Skin and Soft Tissue Infections: 2014 Update by the IDSA. Clinical Infectious Diseases. 2014;59(2):147-159.
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