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L85.8
ICD-10-CM
Keratoacanthoma

Find comprehensive information on keratoacanthoma, including clinical documentation, ICD-10 codes (L87.0), SNOMED CT codes, histopathology, differential diagnosis (squamous cell carcinoma), treatment options, and prognosis. Learn about keratoacanthoma pathology, stages, and best practices for accurate medical coding and healthcare documentation for this rapidly growing skin tumor. This resource provides essential information for physicians, dermatologists, pathologists, and other healthcare professionals involved in the diagnosis and management of keratoacanthoma.

Also known as

KA
SCC-KA type

Diagnosis Snapshot

Key Facts
  • Definition : Rapid-growing, dome-shaped skin lesion resembling squamous cell carcinoma.
  • Clinical Signs : Central crater filled with keratin plug, often found on sun-exposed skin.
  • Common Settings : Head, neck, hands, forearms. Biopsy is crucial for confirmation.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC L85.8 Coding
L82

Keratoacanthoma and other neoplasms

Includes keratoacanthoma and other specified epidermal neoplasms.

D00-D09

In situ neoplasms

Covers carcinoma in situ of various sites, sometimes a precursor to keratoacanthoma.

C44

Skin cancer

Includes malignant neoplasms of the skin, which keratoacanthoma can mimic clinically.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the diagnosis keratoacanthoma?

  • Yes

    Is it specified as giant keratoacanthoma?

  • No

    Do not code keratoacanthoma. Review diagnosis.

Code Comparison

Related Codes Comparison

When to use each related code

Description
Rapidly growing, dome-shaped skin lesion.
Invasive, destructive skin cancer.
Slow-growing, pearly skin nodule.

Documentation Best Practices

Documentation Checklist
  • Keratoacanthoma ICD-10 L85.0 clinical diagnosis documentation
  • Document lesion site, size, morphology (dome-shaped, keratin plug)
  • Rapid growth, evolution, and potential regression noted
  • Histopathology report confirming KA diagnosis crucial for coding
  • Differential diagnosis considered and ruled out (SCC, BCC)

Coding and Audit Risks

Common Risks
  • Code Specificity

    Using unspecified keratoacanthoma codes (e.g., L85.9) when a more specific location or type is documented, impacting reimbursement and data accuracy.

  • Malignancy Confusion

    Misdiagnosis or coding confusion between keratoacanthoma and well-differentiated squamous cell carcinoma (e.g., C44.x), due to histologic similarities, leading to incorrect treatment and reporting.

  • Missing Laterality

    Failing to document and code laterality (right/left) for keratoacanthoma of eyelid/eyelid skin, affecting data quality and potentially reimbursement for bilateral procedures.

Mitigation Tips

Best Practices
  • Thorough skin exam, document lesion morphology ICD-10 L82.0
  • Biopsy for histopathology, rule out SCC ICD-10 C44.9 M8070/3
  • Complete excision, margin assessment for accurate staging, coding
  • Monitor for recurrence, document follow-up ICD-10 Z08, Z85.828
  • Clinician-pathologist discussion clarifies diagnosis, CDI compliant

Clinical Decision Support

Checklist
  • Confirm rapid growth dome-shaped nodule
  • Verify keratin-filled crater on exam
  • Check lesion location sun-exposed skin
  • Biopsy for histopathological diagnosis
  • Rule out squamous cell carcinoma SCC

Reimbursement and Quality Metrics

Impact Summary
  • Keratoacanthoma reimbursement hinges on accurate ICD-10-CM (L82.0-L82.9) and CPT coding for biopsy, excision, or Mohs surgery.
  • Coding errors impact keratoacanthoma claims processing, delaying reimbursements and increasing denial rates.
  • Quality metrics for keratoacanthoma include complete excision rates, recurrence rates, and patient satisfaction impacting hospital value-based payments.
  • Timely and accurate pathology reporting with clear margins documentation is crucial for optimal keratoacanthoma reimbursement.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes. Our AI-powered assistant ensures compliance and reduces coding errors.

Quick Tips

Practical Coding Tips
  • Code L85.0 for keratoacanthoma
  • Document lesion size, site, duration
  • Rule out SCC with biopsy pathology
  • Consider ICD-10-CM guidelines
  • Check payer-specific coding rules

Documentation Templates

Patient presents with a rapidly growing keratoacanthoma, clinically diagnosed as a cutaneous lesion.  The lesion is dome-shaped, with a central keratin plug or crater and a characteristic appearance consistent with keratoacanthoma.  Differential diagnosis includes squamous cell carcinoma, molluscum contagiosum, and verruca vulgaris.  Location of the keratoacanthoma is documented as [insert location, e.g., right forearm, left cheek].  Size is measured as [insert size, e.g., 1.5 cm in diameter] with [insert description, e.g., well-defined borders].  Lesion color is [insert color, e.g., erythematous with a central yellowish core].  Patient denies any associated symptoms such as pain, pruritus, or bleeding.  Patient history is reviewed, including sun exposure, prior skin cancer history, and relevant medical conditions.  Biopsy is planned for histopathological confirmation of keratoacanthoma diagnosis and to rule out squamous cell carcinoma.  Treatment options including surgical excision, curettage and electrodesiccation, cryotherapy, or intralesional chemotherapy will be discussed with the patient following biopsy results.  ICD-10 code L82.0 will be utilized for medical billing and coding purposes.  Patient education provided on keratoacanthoma prognosis, follow-up care, and sun protection.
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