Explore the distribution of codes within ICD-9-CM for the year 2026. Hover over the chart segments to see specific counts and hierarchies.
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The last ICD-9-CM guidelines NCHS published, effective October 1, 2011 and left in place through the ICD-10 transition. Kept here for historical research, audits of legacy claims, and crosswalk work.
U.S. federal government work — public domain
International Classification of Diseases, 9th Revision (Legacy / Historical)
Slot: CS-BROWSE-BOTTOM