With the transition to ICD-10, all HIPAA-covered entities must report ICD-10 codes instead of ICD-9 codes in order to receive reimbursement for their services. Compared to ICD-9—which is more than 30 years old—ICD-10 allows for a much greater level of specificity in coding patient diagnoses. As a result, the new code set contains about five times as many codes as its predecessor—approximately 68,000 to ICD-9’s 13,000. In addition to a greater selection of codes, ICD-10 features an entirely new code structure. Whereas ICD-9 codes consist of three to five characters with a decimal point (e.g., 813.15), ICD-10 codes contain three to seven characters in an alpha-numeric combination.