We need to store additional information (e.g., parameters) in a structured way regarding the execution of a procedure. For example, it was provided to the patient oxygen at 2 liters/minute per nasal canula.

Other examples:

• An 4 inch midline incision was performed in the lower abdomen.
• The surgical dressing was packed (i.e. like a method) into the wound with iodine strip gauze.
• The endotracheal tube was inserted 22 cm into the patient.   (It is not the tube is 22 cm, but was inserted 22 cm into the patient)
• For the colonoscopy exam, the patient was placed in a left side lying position.   (positioning is a detail, and is not body site)

A suggestion would be to include an element (suggestion of name: details) in the resource Procedure (solution similar to https://jira.hl7.org/browse/FHIR-31584):