Malignant melanoma of unsp upper limb, including shoulder

This code signifies the presence of a malignant melanoma originating in an unspecified location of the upper limb, which encompasses the shoulder. It indicates a cancerous tumor of the melanocytes, the pigment-producing cells, within the arm or shoulder region, without further specificity regarding the exact anatomical site.

Apply this code when documentation confirms a diagnosis of malignant melanoma of the upper limb, but the specific site (e.g., forearm, upper arm, hand) is not clearly identified. This is appropriate when the physician's notes state "malignant melanoma of the upper extremity" or "malignant melanoma of the shoulder area" without more granular detail.

• Avoid using this code if a more specific anatomical site within the upper limb is documented (e.g., C43.61 for right upper limb, C43.62 for left upper limb).
• Ensure the pathology report confirms malignancy and melanoma type.
• Always query the provider for a more precise anatomical location if possible to allow for more specific coding.