What is the ICD-9 Code for full-thickness defect, skin of right alar. The patient has a history of malignant skin neoplasms?

To determine the ICD-9 code for a full-thickness defect in the skin of the right alar, along with a history of malignant skin neoplasms, you would need to follow these steps:

1. Start by identifying the appropriate chapter in the ICD-9-CM manual. In this case, we'd look for codes related to the integumentary system or skin conditions.

2. Within the proper chapter, search for codes pertaining to "defect" or "skin defect." This will help locate codes that describe the physical damage or loss of skin in the specified area.

3. Once you've found relevant codes, check for additional information regarding any history of malignant skin neoplasms. This information is necessary to accurately capture the patient's medical history.

4. Finally, select the specific code that best describes the condition and history. It's important to ensure that the code includes both the skin defect and the history of previous malignant skin neoplasms.

Please note, as an AI language model, I do not have access to the specific content of medical coding resources or the ability to search the latest ICD-9 codes. ICD-9 codes were used until October 1, 2015. Therefore, I recommend consulting the ICD-9-CM manual or any authorized coding resources to find the accurate code for this specific case.