ICD-10
International Classification of Diseases 10th Revision, a coding system used for billing, epidemiology, and mortality statistics.
ICD-10-CM (Clinical Modification) is used in the US for diagnosis coding on insurance claims. ICD-10-PCS (Procedure Coding System) codes inpatient procedures. The US transitioned from ICD-9 to ICD-10 in October 2015. ICD-10-CM has roughly 70,000 codes compared to ICD-9-CM's 14,000. ICD-10 codes appear in HL7v2 DG1 segments and FHIR Condition resources. ICD-11 is published but not yet mandated in the US.
FAQ
- When did the US switch to ICD-10?
- October 1, 2015. The transition from ICD-9 to ICD-10 expanded the code set from roughly 14,000 to 70,000 codes, adding significantly more clinical specificity.