ICD-10 Code D03.62 – Melanoma in situ of left upper limb, including shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D03.62 – Melanoma in situ of left upper limb, including shoulder
What it is
This code identifies melanoma in situ on the left upper limb, including the shoulder. The lesion is confined to the epidermis and has not invaded deeper tissue.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include a suspicious pigmented lesion with asymmetry, irregular borders, color variation, or change in size or appearance.
When to use this code
Use this code when the provider documents melanoma in situ specifically on the left arm, forearm, hand, or shoulder area. The pathology or clinical note should support that the lesion remains in situ and the site is left-sided.
Choose this code for a confirmed primary lesion at that exact location. If the record only says “left upper extremity” or does not specify in situ, check documentation before coding.
Do not use for
Do not use this code for invasive melanoma, melanoma in situ at a different skin site, or unspecified laterality. Check documentation if the site is unclear or if the lesion has progressed beyond in situ.
Coding tip
Verify both the laterality and the anatomic site; “left upper limb, including shoulder” is more specific than a general arm code.