Melanocytic nevi of left upper limb, including shoulder

This code signifies the presence of a benign pigmented lesion, specifically a melanocytic nevus (mole), located on the left upper extremity, encompassing the shoulder region. These lesions are typically congenital or acquired proliferations of melanocytes and are generally harmless.

Apply this code when documentation clearly identifies a melanocytic nevus on the patient's left arm or shoulder. This is appropriate for routine skin examinations, follow-up of existing nevi, or prior to excision of a benign lesion in this specific anatomical location.

• Ensure laterality (left) and anatomical site (upper limb, including shoulder) are explicitly documented.
• Distinguish from malignant melanoma (C43.-) or atypical nevi (D48.5), which require different codes.
• If multiple nevi are present on the left upper limb, this single code is generally sufficient unless specific characteristics of individual nevi warrant additional detail.