Procedure codes

Procedure codes are numbers or alphanumeric codes used to identify specific health interventions taken by medical professionals.

International

 * International Classification of Procedures in Medicine (ICPM) and International Classification of Health Interventions (ICHI)
 * ICPC-2 (International Classification of Primary Care, which doe not diagnosis codes, reasons for encounter (RFE), and process of care as well as procedure codes)

North American

 * Health Care Procedure Coding System (including Current Procedural Terminology) (used in United States)
 * ICD-10 Procedure Coding System (ICD-10-PCS) (used in United States)
 * ICD-9-CM Volume 3 (subset of ICD-9-CM) (used in United States)
 * Canadian Classification of Health Interventions (CCI) (used in Canada. Replaced CCP.)
 * Nursing Interventions Classification (NIC) (used in United States)
 * SNOMED (P axis)(english only, translations available but not useful)

European

 * OPS-301 (adaptation of ICPM used in Germany)
 * OPCS-4.2 (used in England)
 * OPCS-4.3 (used in England)
 * Classification des Actes Médicaux (CCAM) (used in France)

Other

 * Australian Classification of Health Interventions (ACHI)