This page contains a link to detail explanations and codes for the emergency department principal diagnosis categories.
Clinical Classification Software (CCS) for ICD-10-CM/PCSThe county of residence.
Metropolitan and Micropolitan Statistical Areas (Map of Metropolitan and Micropolitan Statistical Areas)
The Centers for Medicare and Medicaid Services use these geographic designations for their programs. They are county based using Census Bureau metropolitan and micropolitan definitions.
Metropolitan and Microplitan definitions may be found at Metro/Micro Definitions.
| Area | Counties |
| Metropolitan | Canadian, Cleveland, Comanche, Cotton, Creek, Garfield, Grady, Lincoln, Logan, McClain, Oklahoma, Okmulgee, Osage, Pawnee, Rogers, Sequoyah, Tulsa, Wagoner |
| Micropolitan | Beckham, Bryan, Carter, Cherokee, Custer, Jackson, Kay, Muskogee, Ottawa, Payne, Pittsburg, Pontotoc, Pottawatomie, Stephens, Texas, Washington, Washita, Woodward |
| Rural | Adair, Alfalfa, Atoka, Beaver, Blaine, Caddo, Choctaw, Cimarron, Coal, Craig, Delaware, Dewey, Ellis, Garvin, Grant, Greer, Harmon, Harper, Haskell, Hughes, Jefferson, Johnston, Kingfisher, Kiowa, Latimer, Leflore, Love, McCurtain, McIntosh, Major, Marshall, Mayes, Murray, Noble, Nowata, Okfuskee, Pushmataha, Roger Mills, Seminole, Tillman, Woods |