ICD-10 codes enable dermatology clinics, insurance companies, and government agencies to share information about a patient’s condition. They organize a tremendous number of dermatology diagnoses into a standardized format all three stakeholders can understand. ICD-10 stands for the 10th revision of the International Classification of Diseases, created and maintained by the World Health Organization. WHO further divides diagnoses into ICD-10-CM (primarily used in outpatient and clinical settings) and ICD-10-PCS (primarily used in inpatient and hospital settings). Just as ICD-10 codes classify diseases, CPT codes classify procedures. Coders in a dermatology practice need to be well trained in both coding languages. Note: This content has been updated since the original publish date.