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ICD-10 Coding for Keratoacanthoma(C44._, D48.5)

Complete ICD-10-CM coding and documentation guide for Keratoacanthoma. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

KASCC-KA type

Related ICD-10 Code Ranges

Complete code families applicable to Keratoacanthoma

C44._Primary Range

Malignant neoplasms of skin

Used when keratoacanthoma is confirmed as squamous cell carcinoma (SCC-KA type).

Neoplasm of uncertain behavior of skin

Used when keratoacanthoma is not confirmed as malignant.

Actinic keratosis

Used when actinic keratosis coexists with keratoacanthoma.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
C44._Malignant neoplasm of skinUse when keratoacanthoma is confirmed as SCC-KA type.
  • Biopsy confirming SCC-KA type
  • Histology showing well-differentiated SCC
D48.5Neoplasm of uncertain behavior of skinUse when keratoacanthoma is not confirmed as malignant.
  • Histology inconclusive for SCC
  • Observation of spontaneous regression

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: keratoacanthoma icd 10 code

Essential facts and insights about Keratoacanthoma

Keratoacanthoma is coded as C44._ if confirmed as SCC-KA type, or D48.5 if not confirmed as malignant.

Primary ICD-10-CM Codes for keratoacanthoma

Malignant neoplasm of skin
Non-billable Code

Decision Criteria

clinical Criteria

  • Biopsy confirms SCC-KA type.

Applicable To

  • SCC-KA type

Excludes

  • Benign keratosis

Clinical Validation Requirements

  • Biopsy confirming SCC-KA type
  • Histology showing well-differentiated SCC

Code-Specific Risks

  • Misclassification as benign can lead to under-treatment.

Coding Notes

  • Ensure biopsy confirms SCC-KA type before using this code.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Tanning bed exposure

W89.1XXA
Use with actinic keratosis-related keratoacanthoma.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Squamous cell carcinoma without KA features

C44.9
Lack of keratoacanthoma-specific histological features.

Inflamed seborrheic keratosis

L82.1
Presence of inflammation without keratoacanthoma features.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Keratoacanthoma to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code C44._.

Impact

Clinical: Inaccurate risk assessment for skin cancer., Regulatory: Non-compliance with documentation standards., Financial: Potential claim denials for lack of medical necessity.

Mitigation Strategy

Always ask about UV exposure during patient history., Include UV exposure in the medical record.

Impact

Reimbursement: Incorrect coding can lead to denial of claims., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data reporting.

Mitigation Strategy

Confirm with pathology before coding as malignant.

Impact

Coding without biopsy confirmation of SCC-KA.

Mitigation Strategy

Require biopsy reports before finalizing codes.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Keratoacanthoma, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Keratoacanthoma

Use these documentation templates to ensure complete and accurate documentation for Keratoacanthoma. These templates include all required elements for proper coding and billing.

Keratoacanthoma with suspected malignancy

Specialty: Dermatology

Required Elements

  • Lesion size and location
  • Growth rate
  • Biopsy results

Example Documentation

3 cm crateriform nodule on nasal dorsum, rapid growth over 4 weeks. Biopsy pending.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Lesion on nose, likely benign.
Good Documentation Example
3 cm crateriform nodule with central keratin plug on nasal dorsum, rapid growth over 4 weeks. Differential: KA vs SCC. Biopsy pending.
Explanation
The good example provides detailed lesion characteristics and differential diagnosis.

Need help with ICD-10 coding for Keratoacanthoma? Ask your questions below.

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