ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesC44.599

C44.599

Billable

Other specified malignant neoplasm of skin of other part of trunk

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 C44.599 is a billable code used to indicate a diagnosis of other specified malignant neoplasm of skin of other part of trunk.

Key Diagnostic Point:

C44.599 refers to a malignant neoplasm of the skin located in an unspecified area of the trunk, which does not fall under more specific categories of skin cancer. Skin cancers, including basal cell carcinoma, squamous cell carcinoma, and melanoma, can arise from various factors, with sun exposure being a significant risk factor. The trunk encompasses the torso, excluding the head, neck, and extremities, making this code applicable to lesions found on the back, abdomen, or chest. Surgical management often involves excision of the tumor with clear margins to ensure complete removal and minimize recurrence. Reconstruction may be necessary depending on the size and location of the excised lesion, requiring careful planning to restore both function and aesthetics. Accurate coding is crucial for appropriate treatment reimbursement and tracking of cancer incidence.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in documentation of tumor location and type
  • Need for precise surgical margin descriptions
  • Potential for multiple skin lesions requiring differentiation
  • Variability in treatment approaches and reconstruction needs

Audit Risk Factors

  • Inadequate documentation of tumor characteristics
  • Failure to specify the exact location of the neoplasm
  • Lack of clear surgical margin notes
  • Inconsistent coding of multiple lesions

Specialty Focus

Medical Specialties

Dermatology

Documentation Requirements

Detailed descriptions of the lesion, including size, location, and histological type.

Common Clinical Scenarios

Diagnosis and treatment of skin cancers, including Mohs micrographic surgery.

Billing Considerations

Ensure clear documentation of margins and any reconstructive procedures performed.

Oncology

Documentation Requirements

Comprehensive treatment plans, including chemotherapy or radiation therapy if applicable.

Common Clinical Scenarios

Management of advanced skin cancers requiring multidisciplinary approaches.

Billing Considerations

Document any systemic treatments or follow-up care plans.

Coding Guidelines

Inclusion Criteria

Use C44.599 When
  • Follow official ICD
  • CM coding guidelines, ensuring accurate documentation of the malignancy's location, type, and treatment

Exclusion Criteria

Do NOT use C44.599 When
  • Exclude codes for benign neoplasms and ensure specificity in coding for surgical margins

Related ICD-10 Codes

Related CPT Codes

17311CPT Code

Excision, malignant skin lesion

Clinical Scenario

Used when excising a malignant neoplasm from the trunk.

Documentation Requirements

Document size, location, and margins of the excised lesion.

Specialty Considerations

Dermatologists should ensure detailed operative notes are available.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding skin cancers, improving data collection and reimbursement processes. C44.599 provides a means to capture less common malignant neoplasms that may not fit into more specific categories.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding skin cancers, improving data collection and reimbursement processes. C44.599 provides a means to capture less common malignant neoplasms that may not fit into more specific categories.

Reimbursement & Billing Impact

reimbursement processes. C44.599 provides a means to capture less common malignant neoplasms that may not fit into more specific categories.

Resources

Clinical References

  • •
    American Academy of Dermatology

Coding & Billing References

  • •
    American Academy of Dermatology

Frequently Asked Questions

What types of skin cancers does C44.599 cover?

C44.599 covers other specified malignant neoplasms of the skin that do not fall under more specific categories, including various types of skin cancers that may arise in unspecified areas of the trunk.