ICD-10 Code C44.6 – Other and unspecified malignant neoplasm of skin of upper limb, including shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.6 – Other and unspecified malignant neoplasm of skin of upper limb, including shoulder
What it is
This code identifies a malignant skin tumor on the upper limb, including the shoulder, when the record does not specify a more exact skin cancer type. Use it for documented skin malignancy in that anatomic site.
Clinical signs
Clinical features vary; refer to documentation. Common charted findings may include a suspicious or biopsy-proven malignant skin lesion, nonhealing ulcer, crusted or bleeding growth, or a lesion described as cancer of the skin on the upper limb.
When to use this code
Use C44.6 when the provider documents a malignant neoplasm of skin on the arm, forearm, hand, or shoulder, and the type is other or unspecified. It is appropriate when the site is clear but the histology or exact skin cancer subtype is not stated. Check documentation if the note is incomplete or if a more specific skin cancer code is available.
Do not use for
Do not use this code for benign skin lesions, premalignant conditions, or malignant neoplasms of deeper tissues. Do not use it when the documentation identifies a more specific skin cancer code or a different body site.
Coding tip
Verify both the anatomic site and the wording “other” or “unspecified” before assigning C44.6.