U.S. National Centers for Health Statistics
U.S. Na·tion·al Cen·ters for Health Sta·tis·tics(NCHS) (na'shŭn-ăl sen'tĕrz helth stă-tis'tiks)
A federal agency within the U.S. Centers for Disease Control and Prevention that collects, analyzes, and distributes health care statistics; its database is derived from and supports the U.S. healthcare infrastructure. NCHS also maintains the ICD-9-CM codes (ICD-10 is in preparation.).