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

Code	Display	Definition
Aspiration	Aspiration	A medical procedure that removes something from an area of the body. These substances can be air, body fluids, or bone fragments. [medlineplus.gov]
Biopsy	Biopsy	The Mammogram and Biopsy correspond with each other.
Concern	Concern	The test corresponds with the concern.
Ductogram	Ductogram	A ductogram, also called a galactogram, is a special type of mammogram used for imaging the breast ducts. It can aid in diagnosing the cause of abnormal nipple discharges. Ductography (also called galactography or ductogalactography) is a special type of contrast enhanced mammography used for imaging the breast ducts. Ductography can aid in diagnosing the cause of an abnormal nipple discharge and is valuable in diagnosing intraductal papillomas and other conditions. [www.imaginis.com]
IncidentalFinding	Incidental finding	A medical finding that wasn't the abnormality of the original mammogram, MRI, nuclear medicine, or ultrasound was intended to find.
Mammo	Mammo	The original MRI, Nuclear Medicine, or Ultrasound corresponds with the findings on the Mammogram.
MRI	MRI	The original Mammogram, Nuclear Medicine, or Ultrasound corresponds with the findings on the MRI.
NippleDischarge	Nipple discharge	The findings on the Mammogram and/or Ultrasound, correspond with the nipple discharge.
OutsideExam	Outside exam	Previous exam at another clinic that took place separate from current exam.
Pain	Pain	Mammogram, MRI, Nuclear Medicine, or ultrasound corresponds with the pain the patient is experiencing.
Palpated	Palpated	The Mammogram, Ultrasound, Nuclear Medicine, MRI correspond with the palpated (physical exam to touch) lump.
PostOperative	Post operative	The Mammogram corresponds with the post operative results of the breast incision.
PreviousBiopsy	Previous biopsy	The previous biopsy results correspond with the MRI and/or Ultrasound.
PriorExam	Prior exam	The prior exam of the breast, corresponds with the results of the Mammogram.
Redness	Redness	The redness in the breast, corresponds with the results of the Mammogram and/or Ultrasound.
Scinti	Scinti	The initial Mammogram corresponds with the Scinti results. Scintigraphy definition is a diagnostic technique in which a two-dimensional picture of internal body tissue is produced through the detection of radiation emitted by a radioactive substance administered into the body.
Size<Mammo	Size < mammo	size < mammo
Size<MRI	Size < MRI	size < MRI
Size<Palp	Size < palp	size < palp
Size<US	Size < US	size < US
Size>Mammo	Size > mammo	size > mammo
Size>MRI	Size > MRI	size > MRI
Size>Palp	Size > palp	size > palp
SkinMarker	Skin marker	The mammogram findings correspond with where the skin marker was placed on the breast.
Surgery	Surgery	Surgery
SurgicalSite	Surgical site	The MRI information corresponds with the surgical site.
Tenderness	Tenderness	The mammogram results correspond with where the patient feels tenderness.
TriggerPoint	Trigger point	The results of the Ultrasound correspond with where the trigger point is around the tumor/lesion. The trigger point is the point where the site of the pain is.
US	US	The results of the MRI, Mammogram and/or Nuclear Medicine exam, correspond with this Ultrasound.