When deemed appropriate, these changes were made before the development of this final manuscript describing the ICH performance measures. Peer review of this manuscript was then conducted by reviewers selected by the AHA. After peer review and appropriate revi- sions, these ICH performance measures were approved by the AHA Science Advisory and Coordinating Committee and the AHA Executive Committee. They should be considered valid until either updated or rescinded by the AHA/ASA Stroke Performance Oversight Committee. Performance Measures for Adults Hospitalized With ICH Patient Population and Care Period The patient population is patients with spontaneous ICH, as defined in Definition of ICH in the Methods section, and the care period is the acute hospitalization for diagnosis and management of new ICH, from emergency department arrival at an acute care hospital to discharge from acute care. For patients who are initially seen at 1 hospital (in the emer- gency department or hospital intensive care unit or ward) and transferred to another hospital, care at both hospitals is eli- gible for assessment with these performance measures based on the measures that would be relevant for the extent of care delivered at each respective hospital. The performance mea- sures were not designed for use for elective admissions (eg, evaluation or management of vascular anomalies such as arteriovenous malformations or cavernous malformations) or for inpatient ICH in which stroke occurred after hospital admission for another reason. Accordingly, these admission types are excluded from the measure denominators, as they are for current NQF-endorsed ICH measures. The writing group agreed that it is appropriate to exclude admissions with length of stay >120 days, as is done in the NQF-endorsed ICH measures, to avoid double counting patients when generating quarterly reports. 