Table 1 includes a list of International Classification of Diseases, 10th Revision, Table 1. ICD-10-CM Principal Diagnosis Codes for Eligible Patients With an ICH Diagnosis I61.0 Nontraumatic ICH in hemisphere, subcortical I61.1 Nontraumatic ICH in hemisphere, cortical I61.2 Nontraumatic ICH in hemisphere, unspecified I61.3 Nontraumatic ICH in brainstem I61.4 Nontraumatic ICH in cerebellum I61.5 Nontraumatic ICH, intraventricular I61.6 Nontraumatic ICH, multiple localized I61.8 Other nontraumatic ICH I61.9 Nontraumatic ICH, unspecified I62.9 Nontraumatic intracranial hemorrhage, unspecified ICD-10-CM indicates International Classification of Diseases, 10th Revision, Clinical Modification; and ICH, intracerebral hemorrhage. Adapted from the Centers for Medicare and Medicaid Services ICD-10 Assessment and Maintenance Toolkit.13 Hemphill et al Performance Measures for ICH e245 Clinical Modification principal diagnosis codes for eligible patients with an ICH diagnosis in whom these performance measures are considered applicable. Dimensions of Care The acute hospital inpatient setting for the primary treatment of a patient with ICH was chosen as the setting for assessment of these performance measures. As with acute ischemic stroke, it is recognized that there are multiple dimensions of care for ICH, including the prehospital setting, the emergency depart- ment, rehabilitation, and outpatient care directed at primary and secondary prevention. 