ICD-10 Code C43.62 – Malignant Melanoma of Left Upper Limb, Including Shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C43.62 – Malignant melanoma of left upper limb, including shoulder
What it is
C43.62 identifies a malignant melanoma located on the left upper limb, including the shoulder. Use it when documentation states a primary melanoma arising in that anatomic site.
Clinical signs
Melanoma may present as a changing pigmented lesion, an irregularly shaped mole, or a new dark skin growth. Clinical features vary; refer to documentation and pathology when available.
When to use this code
Use this code when the provider documents malignant melanoma on the left arm, forearm, hand, or shoulder region. It is appropriate for confirmed primary skin melanoma at that site. If the record is unclear about laterality or exact location, check documentation.
Do not use for
Do not use C43.62 for benign nevi, melanoma in situ, or metastatic disease to the skin. Do not assign it when the lesion is on a different limb or when documentation only says “skin lesion.”
Coding tip
Match the code to the documented body site and laterality exactly; if the site is not specific, query for clarification before coding.