This case-insensitive code system http://www.radlex.org defines the following codes:

Code	Display
RID88	adrenal gland
RID164	Anus
RID905	Abdominal aorta
RID879	Thoracic aorta
RID581	aortic arch
RID168	Appendix
RID45712	set of biliary ducts
RID49533	celiac nerve plexus
RID49538	set of cerebral cisterns
RID31011	Colon
RID28727	Set of coronary arteries
RID371	epididymis
RID95	Esophagus
RID187	gallbladder
RID1385	heart
RID38078	hepatic artery
RID7890	Intervertebral disk
RID6122	Joint
RID7589	larynx
RID58	liver
RID1301	Lung
RID35739	Lung parenchyma
RID1384	Mediastinum
RID170	Pancreas
RID38674	Pituitary gland
RID1362	Pleura
RID1363	Pleural space
RID28588	Set of pulmonary veins
RID163	Rectum
RID431	RETROPERITONEUM
RID49864	Set of runoff vessels
RID9286	Sella turcica
RID86	Spleen
RID237	Urinary bladder
RID39545	Set of blood vessels
RID28545	Ankle
RID38594	bone marrow
RID1854	clavicle
RID2524	Coccyx
RID2010	elbow
RID13284	face
RID28570	set of facial bones
RID2107	forearm
RID2945	Hindfoot
RID2639	hip
RID41021	synovial cavity of joint
RID2743	knee
RID2869	Leg
RID13296	Lymph node
RID35754	Mastoid region
RID9236	Maxilla
RID35812	maxillofacial region
RID2946	Midfoot
RID13196	muscle organ
RID9362	Petrous part of temporal bone
RID343	Prostate
RID39189	respiratory system
RID2577	Sacroiliac joint
RID2509	Sacrum
RID1860	Scapula
RID1852	Shoulder girdle
RID39518	Shoulder
RID4843	Fistula
RID28579	Paranasal sinuses
RID28731	Base of cranium
RID7741	Spine
RID34571	Cervical vertebral column
RID34573	Lumbar vertebral column
RID28677	thoracic spine region
RID1884	Sternoclavicular joint
RID399	Subphrenic space
RID13298	portion of tissue
RID1968	Arm
RID302	Uterus
RID49537	Vasculature of kidney
RID28600	Circle of Willis
RID49861	joint of lower extremity
RID49862	joint of upper extremity
RID1245	Airway
RID229	Ureter
RID2662	femur
RID9361	Temporal bone
RID49873	set of teeth
RID132	Small intestine
RID205	kidney
RID28586	Set of pulmonary arteries
RID28601	orbits
RID1178	Inferior vena cava
RID1010	Superior vena cava
RID7202	Brachial plexus
RID34890	Urethra
RID7578	thyroid gland
RID2660	Thigh
RID49939	Set of superior mesenteric vessels
RID773	Subclavian artery
RID2473	Sternum
RID13421	Salivary gland
RID1184	Renal vein
RID936	Renal artery
RID49865	Set of pulmonary vessels
RID35735	Posterior cranial fossa
RID1208	Portal vein
RID6434	brain
RID7587	Parathyroid gland
RID290	Ovary
RID43410	Set of nasal bones
RID9392	internal auditory canal
RID176	pancreatic duct
RID49921	Set of abdominal vessels
RID49931	Set of neck vessels
RID49926	Set of head vessels
RID49933	Set of pelvis vessels
RID49934	Set of shoulder vessels
RID49863	Set of upper extremity vessels
RID49928	Set of lower extremity vessels
RID49927	Set of knee vessels
RID49945	Set of wrist vessels
RID49940	Set of thigh vessels
RID49929	Set of lower leg vessels
RID1179	hepatic vein
RID49930	Set of neck veins
RID49922	Set of ankle vessels
RID49924	Set of foot vessels
RID49925	Set of forearm vessels
RID49959	Set of carotid vessels
RID2392	Thumb
RID2885	Tibia
RID2871	Fibula
RID49923	Set of extremity vessels
RID49932	Set of orbit vessels
RID49944	Set of upper extremity veins
RID49938	Set of thoracic spine vessels
RID49936	Set of cervical spine vessels
RID49937	Set of lumbar spine vessels
RID49935	Set of spine vessels
RID28744	Parotid gland
RID13190	Set of cranial nerves
RID6677	Brainstem
RID49943	set of tributaries
RID1155	Spinal vein
RID49942	Set of tibioperoneal vessels
RID9779	Temporomandibular joint
RID49941	Set of thoracic inlet vessels
RID49962	Set of chest vessels
RID6392	Temporal brain region
RID49958	Set of adrenal vessels
RID1895	acromioclavicular joint
RID49957	Set of abdominal veins
RID49969	Set of lower extremity veins
RID49960	Set of celiac vessels
RID28587	Set of veins
RID49964	Set of extremity veins
RID49965	Set of femoral vessels
RID10003	Oropharynx
RID13211	pharynx
RID9990	Nasopharynx
RID49968	Set of head veins
RID49971	Set of pelvis veins
RID49961	Set of chest veins
RID49967	Set of head arteries
RID7456	Lumbosacral plexus
RID38761	Femoral artery
RID962	Popliteal artery
RID49963	Set of extremity arteries
RID49970	Set of ovarian vessels
RID34550	Eye
RID49966	Set of hand vessels
RID2470	axilla
RID49541	Set of iliac vessels
RID1008	Vein
RID49981	Extremity vein
RID49983	Upper extremity vein
RID49982	Lower extremity vein
RID582	Brachiocephalic artery
RID1199	Femoral vein
RID1201	Popliteal vein
RID49976	Upper extremity artery
RID49975	Lower extremity artery
RID49974	Extremity artery
RID43579	Set of fallopian tubes
RID35730	Portion of soft tissue
RID13209	musculoskeletal system
RID2868	Popliteal fossa
RID49825	set of penis vessels
RID6067	tendon
RID49972	lactiferous duct
RID2314	Carpal tunnel
RID49979	Upper extremity vessel
RID49978	Lower extremity vessel
RID39553	Set of iliac arteries
RID945	Internal iliac artery
RID29994	right upper quadrant of abdomen
RID1524	diaphragm
RID30014	wall of abdomen
RID50046	Set of breast vessels
RID2468	Chest wall
RID476	inguinal part of abdomen
RID50047	set of mesenteric arteries
RID49534	Set of cerebral arteries
RID38751	Set of carotid arteries
RID397	Peritoneal cavity
RID50044	set of subclavian vessels
RID122	Pylorus
RID3331	pseudoaneurysm
RID50045	Set of testicular vessels
RID50048	Endomyocardium
RID1408	Pericardial cavity
RID7361	Spinal cord
RID34557	placenta
RID478	artery
RID94	gastrointestinal tract
RID43244	Genitourinary system
RID50038	visceral artery
RID50039	iliac artery graft
RID39570	skull base to mid-thigh
RID13197	bone organ
RID28569	set of bone organs
RID114	stomach
RID34436	Long bone
RID49727	cortex of kidney
RID49640	Set of lymph vessels
RID28575	Lacrimal ducts
RID49467	Axial skeleton
RID50049	Peripheral skeletal system
RID1392	Left ventricle
RID365	Scrotum
RID366	Testis
RID4	Blood vessel
RID28591	set of ribs
RID2746	Patella
RID2109	Radius
RID2119	Ulna
RID1971	Humerus
RID2177	Wrist
RID28829	foot
RID2992	Toe
RID28757	set of toes
RID2996	Second toe
RID2997	Third toe
RID2998	Fourth toe
RID2999	Fifth toe
RID2959	calcaneus
RID35798	Sesamoid bone of foot
RID2318	hand
RID9196	skull
RID9082	Mandible
RID50164	posterior ends of lower ribs
RID50165	posterior ends of upper ribs
RID28581	posterior ends of ribs
RID28597	anterior ends of upper ribs
RID50166	set of upper ribs
RID50168	anterior ends of ribs
RID50167	set of lower ribs
RID774	vertebral artery
RID2391	Finger
RID2394	Index finger
RID2396	Long finger
RID2398	Ring finger
RID2400	Small finger
RID2993	Great toe
RID2564	Acetabulum
RID50279	set of orbit veins
RID50267	Head artery
RID50382	Neck artery
RID43693	Optic foramen
RID28599	zygomatic arch
RID50380	Set of lower extremity arteries
RID50381	Set of upper extremity arteries
RID50379	Set of ankle arteries
RID49636	set of tibio-peroneal arteries
RID28726	Cervicothoracic spine region
RID28734	Lumbosacral junction
RID28739	Thoracolumbar junction
RID684	External carotid artery
RID584	Common carotid artery
RID865	brachial artery
RID34819	Adrenal vein
RID295	uterine tube
RID1980	Bicipital groove of humerus
RID935	Adrenal artery
RID50162	skull vertex to mid-thigh
RID50170	portion of oral tissue
RID28742	Superior mediastinum
RID2594	Symphysis pubis
RID39681	Olecranon
RID50281	Spinal vessel
RID50270	Adrenal vessel
RID7749	Dens
RID7747	Axis
RID1247	trachea
RID50173	set of bones from skull base to mid-thigh
RID5588	Shunt catheter
RID29665	upper gastrointestinal tract
RID362	penis
RID35951	Pancreatic artery
RID906	Celiac artery
RID1212	Superior mesenteric vein
RID1209	splenic vein
RID50276	set of pelvic arteries
RID955	uterine artery
RID908	Left gastric artery
RID50277	st of urinary bladder arteries
RID7901	Facet joint of spine
RID148	Jejunum
RID410	peritoneum
RID9968	Submandibular gland
RID5555	Tube
RID1430	Thymus
RID823	internal thoracic artery
RID358	Vas deferens
RID31305	Set of abdominal lymphatic vessels
RID50274	set of pelvic lymphatic vessels
RID1211	Inferior mesenteric vein
RID910	Gastroduodenal artery
RID34563	cervical vertebral arch joint
RID50266	Renal vessel
RID49729	Set of renal arteries
RID50393	Set of abdominal arteries
RID921	Splenic artery
RID50284	Mesenteric artery
RID5598	Stent
RID7111	epidural space
RID6135	Spinal canal
RID7119	Subarachnoid space
RID5576	Catheter
RID927	Superior mesenteric artery
RID939	Inferior mesenteric artery
RID50283	Cerebral artery
RID7195	Peripheral nerve
RID50285	Thoracic artery
RID50275	Set of Extremity lymphatic vessels
RID954	Internal pudendal artery
RID734	Maxillary artery
RID50272	Peripheral artery
RID50273	Spinal artery
RID38279	Intrahepatic branch of portal vein
RID20052	Lumbar segment of spinal epidural space
RID20051	Thoracic segment of spinal epidural space
RID586	Cervical portion of internal carotid artery
RID50377	Set of hepatic veins
RID50280	set of vertebral vessels
RID1013	Subclavian vein
RID35904	subdivision of cerebral part of internal carotid artery
RID585	Internal carotid artery
RID35846	subdivision of common carotid artery
RID605	Cerebral part of internal carotid artery
RID50269	Femoral vessel
RID50271	Extremity vessel
RID50268	Intracranial vessel
RID199	Common bile duct
RID34474	Dural venous sinus
RID50383	Neck vessel
RID34445	Cerebral vein
RID22795	Intercostal nerve
RID50378	Set of visceral vessels
RID50286	set of intraosseous veins
RID357	seminal vesicle
RID50384	Set of pedal lymphatic vessels
RID31553	Cervical part of esophagus
RID10021	Hypopharynx
RID13208	Skeletal system
RID325	Vagina
RID884	Intercostal artery
RID49542	Set of visceral arteries
RID49535	set of cerebral sinuses
RID1169	Azygos vein
RID49539	Set of cervical arteries
RID4851	arteriovenous fistula
RID880	Bronchial artery
RID1156	Epidural venous plexus
RID50287	Set of extracranial vessels
RID35944	Infrarenal aorta
RID50392	Cervical intervertebral disk
RID30383	Lymphatic vessel
RID39344	small joint
RID39345	medium-sized joint
RID39343	major joint
RID13189	nerve
RID50342	Lower leg vessel
RID18593	nerve root
RID29154	Vertebra
RID2527	Pelvic bone
RID1394	Aortic valve
RID13091	Inferior epigastric artery
RID50363	Set of mesenteric vessels
RID9279	Maxillary dental arcade
RID9106	Mandibular dental arcade
RID50362	Set of hepatic vessels
RID1024	internal jugular vein
RID150	Ileum
RID434	Perirenal space
RID2947	Forefoot
RID28680	Perirectal region
RID28830	Lumbar intervertebral disk
RID482	Supraaortic valve area
RID6071	Ligament organ
RID3003	Joint of ankle or foot
RID50528	Sacral segment of spinal epidural space
RID20050	Cervical segment of spinal epidural space
RID56	Abdomen
RID28749	breast
RID1243	Thorax
RID13202	limb of body
RID9080	head
RID2638	Lower extremity
RID7488	neck
RID2507	Pelvis
RID1850	Upper extremity
RID39569	whole body
RID35962	umbilical artery
RID34558	Umbilical Cord
RID50043	set of umbilical vessels
RID665	middle cerebral artery
RID6062	Body region
RID5771	Bilateral
RID5824	LEFT
RID5825	RIGHT
RID49843	Unspecified laterality
RID38593	Unilateral
RID50075	Extension maneuver
RID50069	Flexion maneuver
RID10475	Stress maneuver
RID12535	at rest
RID10477	exercise stress maneuver
RID50035	Single state of exercise
RID50036	Multiple states of exercise
RID10467	exhalation maneuver
RID10468	inspiration maneuver
RID50083	Standing maneuver
RID50132	standing with brace maneuver
RID50073	Bending maneuver
RID50082	Right bending maneuver
RID50081	Left bending maneuver
RID50074	clenched fist maneuver
RID50078	forced dorsiflexion maneuver
RID48090	voiding
RID10397	Ablation
RID10398	Aspiration of bodily substance
RID12933	Fine-needle aspiration
RID38611	Biopsy
RID49777	Core needle biopsy
RID10417	Drainage
RID49621	Device exchange
RID28842	Injection
RID28708	Localization
RID45700	Needle localization
RID35774	NERVE BLOCK
RID28707	device placement procedure
RID39262	radiotherapy
RID49850	Radiosurgery
RID49857	device replacement
RID45699	STEREOTACTIC BIOPSY
RID1839	Vertebroplasty
RID49866	Deep biopsy
RID49871	Superficial biopsy
RID35777	Stereotactic localization
RID10407	Repair
RID38602	Vacuum-assisted biopsy
RID49956	Vascular access
RID49838	Tissue sampling
RID49593	endovenous laser treatment
RID50031	Peripheral venous access
RID10415	Device removal
RID49634	Substance removal
RID10401	Atherectomy
RID50156	Bronchoscopy
RID1840	kyphoplasty
RID49772	Dilation procedure
RID45710	Endoscopy
RID50240	Denervation procedure
RID1634	Gastrostomy
RID50359	Object repositioning
RID10412	Thrombectomy
RID49757	percutaneous transluminal angioplasty
RID1559	Procedure
RID49896	Change
RID46071	feeding tube advancement
RID49596	manometry
RID50349	Object removal
RID35814	pericardiocentesis
RID35813	paracentesis
RID10406	infusion
RID1754	cryoablation
RID1849	radiofrequency ablation
RID46073	lumbar puncture
RID10380	myelography
RID35815	thoracentesis
RID43245	tube insertion
RID1671	cholecystostomy
RID49739	cholangioscopy
RID49747	ligation
RID49749	microwave ablation
RID49748	mechanical thrombectomy
RID49776	vertebral augmentation
RID49569	venous sampling
RID49760	Device revision
RID50330	Deep drainage
RID49657	hemodynamic evaluation
RID10379	Venography
RID49755	percutaneous sympathectomy
RID10404	embolization
RID11031	Angioplasty
RID10408	Object retrieval
RID1647	Chemoembolization
RID50522	Radioembolization
RID50523	Vascular sclerotherapy
RID11030	Balloon dilation procedure
RID49912	reduced
RID49771	stab phlebectomy
RID50524	Excisional biopsy
RID49632	check tube
RID10321	computed tomography
RID10312	Magnetic resonance imaging
RID10326	Ultrasound
RID10363	dual energy xray absorptiometry
RID10357	mammography
RID10341	Pet-ct
RID10330	nuclear medicine imaging
RID10337	Positron emission tomography
RID10345	projection radiography
RID10361	Fluoroscopy
RID49583	SPECT-CT
RID10311	imaging modality
RID50104	Endorectal view
RID50087	10 degree caudal angle view
RID50090	10 degree cephalic angle view
RID50091	20 degree cephalic angle view
RID50092	Posteroanterior 30 degree flexion view
RID50088	30 degree caudal angle view
RID50093	45 degree cephalic angle view
RID50094	90 degree abduction view
RID5818	anterior
RID43583	AP view
RID10439	Lateral decubitus position
RID10425	Left lateral decubitus position
RID10424	Right lateral decubitus position
RID45790	Axillary view
RID43665	Norgaard view
RID50095	Bora view
RID50096	Brewerton view
RID43671	Caldwell view
RID43616	Danelius miller view
RID43618	Ferguson view
RID43621	Friedman view
RID50097	Garth view
RID43625	Grashey view
RID43630	Holmblad view
RID45788	Inlet view
RID43637	Judet view
RID50106	Left anterior oblique view
RID43591	lateral view
RID45782	cross table lateral view
RID50107	Lateral frog leg view
RID50109	Lateral spot view
RID50111	Laurin view
RID45780	Left lateral view
RID43593	left oblique view
RID43584	apical lordotic view
RID50113	Left posterior oblique view
RID43654	Merchant view
RID50114	Mediolateral oblique view
RID50115	Mortise view
RID45661	oblique view
RID50116	Odontoid view
RID45789	Outlet view
RID50118	Posteroanterior prone view
RID49830	Panoramic
RID50119	radio head capitallar view
RID50120	Right anterior oblique view
RID45781	Right lateral view
RID43596	right oblique view
RID50099	Rosenberg view
RID50121	Right posterior oblique view
RID50122	Scaphoid view
RID50123	Serendipity view
RID43597	Spot view
RID43682	Stryker notch view
RID45786	Sunrise view
RID45663	swimmers view
RID50124	Tangential view
RID43686	Towne view
RID45785	Transthoracic view
RID50125	True anteroposterior view
RID50126	True lateral view
RID45787	Tunnel view
RID10455	Upright position
RID50127	Velpeau view
RID50100	Von Rosen view
RID43689	Occipitomental view
RID50102	Waters upright view
RID43690	West point view
RID50128	Laterally exaggerated craniocaudal view
RID50129	Y view
RID50103	Zanca view
RID50070	posteroanterior 45-degree flexion view
RID50079	Internal rotation view
RID50077	External rotation view
RID43586	cone view
RID45659	babygram
RID10451	Open mouth position
RID50172	closed mouth position
RID43653	Mayer view
RID45779	supine view
RID43594	PA view
RID50386	Oblique upright view
RID28651	Magnification
RID10509	Implant displaced
RID39543	transvaginal
RID6427	Transabdominal
RID50328	air gap breast view
RID10534	Radiography grid
RID10447	Ulnar deviation position
RID10446	Radial deviation position
RID43667	original Law view
RID43681	Stenvers view
RID45791	Submentovertical view
RID45795	Obliques view
RID39542	transrectal
RID50367	sunrise 20 degrees view
RID50368	sunrise 40 degrees view
RID50369	sunrise 60 degrees view
RID50372	Merchant 60 degrees view
RID50371	Merchant 45 degrees view
RID50370	Merchant 30 degrees view
RID50373	Trans-scapular view
RID43600	Arcein view
RID10579	axial plane
RID50534	Bitewing view
RID50098	Harris view
RID45783	carpal tunnel view
RID43605	Broden view
RID50535	Jones view
RID50329	rolled breast view
RID45802	Runoff
RID10521	Frontal projection
RID50635	Oblique crosstable
RID50628	Max abduction
RID50629	Oblique prone