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ICD-10-CM · L02.419GeneralSystemic

Axillary Abscess

Learn about axillary abscess (armpit abscess, underarm abscess) diagnosis, including clinical documentation, medical coding, healthcare best practices, and treatment options. Find information on identifying, managing, and coding an axillary abscess for accurate medical records and optimal patient care. This resource provides relevant details for healthcare professionals, coders, and patients seeking information on this condition.

Also known as
Armpit AbscessUnderarm Abscess
Definition

A localized collection of pus within the armpit tissues.

Clinical signs

Painful, swollen, red lump under the arm, sometimes with fever or chills.

Common settings

Bacterial infection of sweat glands or hair follicles, often after shaving or deodorant use.

Related Codes

ICD-10 Code Families

Complete code families applicable to L02.419

L02.0-L02.9
Cutaneous abscess, furuncle and carbuncle
L08.89
Other local infections of skin and subcutaneous tissue
L08.9
Local infection of skin and subcutaneous tissue, unspecified
Code Comparison

When to use each related code

DescriptionWhen to use
Bacterial infection in armpit, forming pus.Use for localized collection of pus in axilla. Consider causative organisms.
Inflammation of sweat glands, often painful.Use for painful, inflamed lumps, often with redness, in axilla or groin. Rule out abscess.
Enlarged lymph nodes in the armpit.Use for palpable nodes in axilla. Investigate underlying cause (infection, malignancy).
Documentation

Best-practice checklist

  • Document abscess location (e.g., axillary, right/left)
  • Record size, appearance (e.g., fluctuant, erythematous)
  • Note any associated symptoms (e.g., pain, fever)
  • Document drainage procedure if performed (e.g., I&D)
  • Include ICD-10 code L02.01 (Axillary abscess)
Coding & Audit Risks

Common pitfalls to avoid

Laterality Documentation

Missing documentation specifying right, left, or bilateral axillary abscess impacts coding accuracy and reimbursement.

Causative Organism

Lack of documentation identifying the infection source (e.g., staph) can affect ICD-10 coding and treatment selection.

Complication Coding

Associated complications like lymphadenitis or sepsis may be undercoded if not explicitly documented and linked to the abscess.

Mitigation

Best-practice tips

  • 01Proper hand hygiene prevents axillary abscess spread. ICD-10: L02.01
  • 02Thorough drainage crucial for abscess resolution. CPT: 10060, 10061
  • 03Wound care, antibiotics key for infection control. SNOMED CT: 241083008
  • 04Timely diagnosis, treatment reduce recurrence risk. CDI query: abscess location
  • 05Patient education on hygiene, wound care essential. HCC coding: none
Clinical Decision Support

Step-by-step checklist

  1. 1

    Confirm localized swelling, erythema, tenderness in axilla.

  2. 2

    Palpate for fluctuance. Document size, location, and any drainage.

  3. 3

    Consider diabetes, hidradenitis suppurativa, peripheral vascular disease.

  4. 4

    Rule out lymphadenitis, furuncle, cellulitis via exam/labs/imaging.

Documentation Template

Ready-to-paste narrative

Patient presents with complaints consistent with an axillary abscess, also known as an armpit abscess or underarm abscess.  Symptoms include localized pain, swelling, tenderness, erythema, and warmth in the axillary region.  The patient may also report restricted range of motion in the affected arm, fever, chills, and malaise.  Physical examination reveals a palpable, fluctuant mass in the axilla.  Differential diagnoses considered include hidradenitis suppurativa, lymphadenitis, and furuncle.  Diagnosis of axillary abscess is confirmed based on clinical presentation and physical exam findings.  Treatment plan includes incision and drainage of the abscess, wound packing, and antibiotic therapy to address the underlying infection.  Patient education provided on wound care, pain management, and signs and symptoms of complications such as cellulitis or sepsis.  Follow-up appointment scheduled to monitor healing progress and ensure complete resolution of the infection.  ICD-10 code L02.01 (Cutaneous abscess, furuncle and carbuncle of axilla) is appropriate for this diagnosis.  Procedure codes for incision and drainage will be based on the complexity of the procedure performed.
FAQs

Common questions and answers

How can I differentiate between a simple axillary abscess and a more serious deep tissue infection like necrotizing fasciitis in a patient presenting with an armpit abscess?+

Differentiating a simple axillary abscess from necrotizing fasciitis requires careful clinical assessment. While both present with localized pain, swelling, and erythema, necrotizing fasciitis often exhibits rapid progression, severe pain disproportionate to the exam findings, systemic symptoms (fever, tachycardia, hypotension), and crepitus or skin discoloration. Simple abscesses typically respond to incision and drainage, whereas necrotizing fasciitis necessitates immediate surgical debridement and broad-spectrum antibiotics. Consider implementing a high index of suspicion for necrotizing fasciitis in patients with rapid deterioration or atypical presentation. Explore how imaging modalities like ultrasound or CT can aid in distinguishing between these conditions and guiding appropriate management. Learn more about the LRINEC score and its utility in risk stratification for necrotizing fasciitis.

What are the best antibiotic treatment options for an uncomplicated axillary abscess after incision and drainage, considering MRSA prevalence and antibiotic stewardship principles?+

Antibiotic therapy following incision and drainage of an uncomplicated axillary abscess is often unnecessary in immunocompetent patients. However, in cases of significant cellulitis, systemic symptoms, or immunocompromise, antibiotic coverage should be considered. Due to the prevalence of methicillin-resistant Staphylococcus aureus (MRSA), empiric therapy should cover this pathogen. Options include clindamycin, trimethoprim-sulfamethoxazole (TMP-SMX), or doxycycline. For severe infections or those failing to respond to initial therapy, consider consulting infectious disease specialists and obtaining cultures for targeted antibiotic selection. Explore how local resistance patterns can inform antibiotic choices and consider implementing antibiotic stewardship principles by limiting duration of therapy and reassessing the need for continued antibiotics after 48-72 hours.

What are the key steps in performing incision and drainage of an axillary abscess, including pain management techniques and post-procedure care instructions for optimal patient outcomes?+

Incision and drainage (I&D) of an axillary abscess requires adequate local anesthesia, typically using lidocaine with or without epinephrine. A generous incision should be made over the fluctuant area to ensure complete drainage. Break up any loculations within the cavity and irrigate thoroughly with sterile saline. Packing the cavity with iodoform gauze can help prevent premature closure and promote continued drainage. Post-procedure care includes frequent dressing changes, pain management with oral analgesics, and patient education on wound care. Consider implementing warm compresses to facilitate healing. Learn more about different packing techniques and the appropriate timing for pack removal to minimize scarring and recurrence risk. Explore how patient education can improve adherence to post-procedure instructions and promote optimal healing.

Clinical accuracy: This information is provided for documentation and coding guidance and should not replace professional medical judgment.

Coding standard: ICD-10-CM, current FY guidelines.