This case-insensitive code system http://hl7.org/fhir/us/breast-radiology/CodeSystem/CompositionSectionSliceCodesCS defines the following codes:

Code	Display	Definition
report	Code to identify the 'Report' section slice	Slicing CompositionSection Code - Report.
impressions	Code to identify the 'Impressions' section slice	Slicing CompositionSection Code - Impressions.
relatedResources	Code to identify the 'RelatedResources' section slice	Slicing CompositionSection Code - Related Resources.
recommendations	Code to identify the 'Recommendations' section slice	Slicing CompositionSection Code - Recommendations.
findingsLeftBreast	Code to identify the 'Findings Left Breast' section slice	Slicing CompositionSection Code - Findings Left Breast.
findingsRightBreast	Code to identify the 'Findings Right Breast' section slice	Slicing CompositionSection Code - Findings Right Breast.
findingsBiLateralBreast	Code to identify the 'Findings BiLateral Breast' section slice	Slicing CompositionSection Code - Findings BiLateral Breast.