PAG ICD-9-ICD-10 Crosswalk Table

From ACOG:
https://www.acog.org/About_ACOG/ACOG_Departments/Coding

Free online medical coding reference tool- www.ICD10Data.com

Centers for Medicare and Medicaid Services (CMS)- http://www.cms.gov/ICD10

National Centers for Health Statistics (CHS [CDC])- http://www.cdc.gov/nchs/icd/icd10.htm

American Health Management and Information Association (AHIMA)- http://www.ahima.org/icd10/

AAPC- http://www.aapc.com/icd-10/