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v1.0.0
ICD-10 Guide
ICD-10 CodesC44.601

C44.601

Billable

Unspecified malignant neoplasm of skin of unspecified upper limb, including shoulder

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

Code Description

ICD-10 C44.601 is a billable code used to indicate a diagnosis of unspecified malignant neoplasm of skin of unspecified upper limb, including shoulder.

Key Diagnostic Point:

C44.601 refers to an unspecified malignant neoplasm of the skin located on the upper limb, including the shoulder. This code is used when a patient presents with a skin cancer diagnosis that does not specify the exact type of malignancy, such as melanoma or non-melanoma skin cancer. Skin cancers are often associated with sun exposure, which is a significant risk factor for the development of malignant neoplasms in this area. Surgical management may involve excision of the tumor with careful attention to surgical margins to ensure complete removal of cancerous cells. Reconstruction may be necessary depending on the size and location of the excised lesion, which can involve various techniques such as skin grafts or flap surgeries. Accurate coding is essential for appropriate treatment planning and reimbursement, as well as for tracking epidemiological data related to skin cancers.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in documentation of skin cancer types
  • Need for precise surgical margin descriptions
  • Potential for multiple skin lesions requiring differentiation
  • Variability in reconstruction techniques and their documentation

Audit Risk Factors

  • Insufficient documentation of the type of malignancy
  • Inadequate details on surgical margins
  • Lack of clarity on reconstruction procedures
  • Failure to document the patient's history of sun exposure

Specialty Focus

Medical Specialties

Dermatology

Documentation Requirements

Detailed descriptions of the lesion, biopsy results, and treatment plans.

Common Clinical Scenarios

Diagnosis and treatment of skin cancers, including Mohs surgery.

Billing Considerations

Ensure clear documentation of margins and type of skin cancer for accurate coding.

Oncology

Documentation Requirements

Comprehensive cancer staging and treatment plans.

Common Clinical Scenarios

Management of skin cancer patients undergoing chemotherapy or radiation.

Billing Considerations

Document all treatment modalities and patient responses to ensure accurate coding.

Coding Guidelines

Inclusion Criteria

Use C44.601 When
  • According to ICD
  • 10 guidelines, C44
  • 601 should be used when the specific type of malignant neoplasm is not documented
  • Coders should ensure that the diagnosis is confirmed through pathology reports and that any related procedures are accurately coded

Exclusion Criteria

Do NOT use C44.601 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

11600CPT Code

Excision, malignant skin lesion, face, ears, scalp, neck; excised diameter over 4.0 cm

Clinical Scenario

Used when excising a malignant skin lesion on the upper limb.

Documentation Requirements

Document the size of the lesion and the surgical margins.

Specialty Considerations

Ensure that the excision is linked to the diagnosis of C44.601.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding, but C44.601 remains a less specific code that requires careful documentation to avoid misclassification and ensure appropriate reimbursement.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding, but C44.601 remains a less specific code that requires careful documentation to avoid misclassification and ensure appropriate reimbursement.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    American Academy of Dermatology

Coding & Billing References

  • •
    American Academy of Dermatology

Frequently Asked Questions

What should I do if the pathology report does not specify the type of skin cancer?

In such cases, you should use C44.601, but ensure that all other documentation supports the diagnosis of a malignant neoplasm. If more specific information becomes available later, consider updating the code.