The QDM categories Procedure and Intervention modeling is identical.
Intervention is defined as "Intervention represents a course of action intended to achieve a result in the care of persons with health problems that does not involve direct physical contact with a patient. Examples include patient education and therapeutic communication."

Procedure is defined as "Procedure is derived directly from HL7 and Canada Health Infoway: “An Act whose immediate and primary outcome (post-condition) is the alteration of the physical condition of the subject. … Procedure is but one among several types of clinical activities such as observation, substance-administrations, and communicative interactions … Procedure does not comprise all acts of [sic] whose intent is intervention or treatment.” A procedure may be a surgery or other type of physical manipulation of a person’s body in whole or in part for purposes of making observations and diagnoses or providing treatment."
References:
1. HL7, available at: http://www.hl7.org/documentcenter/public_temp_9D8B62D1-1C23-BA17-0C978A875D9E7083/wg/java/apidocs/org/hl7/rim/Procedure.html. Last accessed August 2017.
2. Modified from Canada Health Infoway, available at: https://www.infoway-inforoute.ca/. Last accessed August 2017.

The HL7 Clinical Quality Information Work Group reviewed all QDM datatypes and attributes to assure that the information needed to express eCQMs and clinical decision support artifacts are available in existing clinical records. The Work Group mapped all QDM to HL7 FHIR and QI Core resources to assure alignment. The mapping for Procedure and Intervention is identical. While there is a conceptual difference between the two, each is represented the same in HL7 messaging. QDM uses the Order, Performed and Recommended contexts for both Procedure and Intervention and all attributes are identical.

For the QDM User Group - For more consistent and less complex eCQM expression, should all QDM Intervention be subsumed under Procedure (i.e., retire the Intervention category in QDM)?