ICD-10-CM > C00-D49 > C43-C44 > C44 > C44.5 > C44.52 C44.52 Squamous cell carcinoma of skin of trunk Non-Billable/Non-Specific Codes C44.520Squamous cell carcinoma of anal skinC44.521Squamous cell carcinoma of skin of breastC44.529Squamous cell carcinoma of skin of other part of trunk