Top Banner
MS Procedural MS Procedural Coding Coding MHA MHA June 11, 2009 June 11, 2009 Irene Mueller, EdD, RHIA Irene Mueller, EdD, RHIA
48

MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Dec 23, 2015

Download

Documents

Brook Warren
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

MS Procedural CodingMS Procedural Coding

MHAMHA

June 11, 2009June 11, 2009

Irene Mueller, EdD, RHIAIrene Mueller, EdD, RHIA

Page 2: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Objectives Objectives

• 2nd hour – Coding Common MS Tx– ICD-9-CM – CPT coding

• Resources

Page 3: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

MS Procedure CodingMS Procedure Coding

• Procedures– ICD-9-CM– CPT

Page 4: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Bone BxBone Bx• ICD-9-CM

– 77.40-49 Bone Bx OR 41.31 Aspiration bone marrow• CPT

– Bone biopsy - 20220– Bone marrow aspiration performed alone

• 38220– Bone marrow biopsy is performed

• 38221 (bone marrow biopsy)• cannot report with CPT code 20220 (bone biopsy)

– 38220 and 38221 reported together• If two procedures performed at separate sites or at separate

encounters• Separate sites = different bones OR 2 skin incisions over same bone

– 38221 and 38220 performed at same site through same incision• Only CPT 38221 is reported

Page 5: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

MyelographyMyelography

• ICD-9-CM– 87.21

• CPT– Myelography 

• Brain 70010 • Spine

– Cervical 72240 – Lumbosacral 72265– Thoracic 72255 – Total 72270 

Page 6: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

ArthrocentesisArthrocentesis•  ICD

– 81.91 Arthrocentesis •  includes: Joint aspiration  • excludes: 

– for arthrography (88.32)– bx of joint structure (80.30-80.39) – for injection of drug (81.92)

• CPT– Arthrocentesis

• Intermediate Joint 20605  • Large Joint 20610  • Small Joint 20600 

Page 7: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Fracture ReductionFracture Reduction

• Type of fx doesn’t always correspond to type of tx• ICD-9-CM - determine

• Open/closed (Remember open = MUST connect w fx site)• Internal fixation used?• Bone involved, part of bone

• Open reduction– 79.6x Add’l code for debridement– Extremities only– Debridement included in open fx reductions of

• Skull, nasal, orbital, other facial, vertebral bones

Page 8: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

CPT Fracture MgtCPT Fracture Mgt

• Many more specific fx proc codes than ICD

• Pinning• Closed tx

– w/ manipulation (reduction)– w/o manipulation– w/ or w/o skeletal traction

• Open tx (fx site is surgically opened/exposed)

• Percutaneous Skeletal Fixation– External fixation (removal

included in global pkge)– Internal Fixation (ORIF)

• Application/Removal of initial cast/splint

• Normal, uncomplicated Follow up

Page 9: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Internal FixationInternal Fixation

• ICD-9-CM – 78.5.x w/out fx reduction

• Fx w/good alignment• IF device reinserted – displaced/broken

– IF with bone grafts, shortening/lengthening bone, Int. Fix. is INCLUDED in those codes

• CPT– Ex: ORIF of left mandibular fx 21470-LT

Page 10: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

External FixationExternal Fixation

• ICD-9-CM– Reduction w/ External

fixator device • add’l code 78.10-78.19• Type of device – add’l

code – Monoplanar – 84.71– Ring system – 84.72– Hybrid system (both of

above) – 84.73

– No reduction• 93.4x – traction

• 93.5x – Other immobilization, etc.

• 97.88 – Removal of these devices

– Mini-fixator• 78.1 Application –

add’l code to any fx reduction

• 78.6 Removal

Page 11: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

CPT External fixation CPT External fixation

• 20692 - Add’l code, unless ext. fix included • Ex: Closed tx of femoral shaft fx with

manipulation and external fixation system application – 27502, 20692-51

• Ex: Closed tx of tibial fx w/manipulation, application of cast, partial skin debridement of fx site– 27752, 11040

Page 12: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Open Fx DebridementOpen Fx Debridement

• ICD-9-CM– 79.6X Debridement of open fracture– Used instead of 86.22, Excisional

debridement of wound, infection, or burn

• CPT– 11010, 11011 and 11012

• Differ by extent of debridement• Must meet open fx definition

Page 13: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Amputation ProceduresAmputation Procedures

• Disarticulation OR• Cutting thru bone• ICD-9-CM

– 84.xx• 3rd digit = upper/lower limb• 4th digit = portion of limb

AND type of amputation

– 84.3 Revision of stump– 84.1x – Revision of

current traumatic amputation

• BKA = 84.15, AKA = 84.17– If BKA converted to

AKA, code just the AKA

• Metatarsal = toe amputation

• Transmetatarsal = foot amputation

Page 14: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

DislocationsDislocations

• ICD-9-CM– Associated

w/reduction of fx• Dislocation reduction

incl. in fx reduction code

– Not assoc. w/fx• 79.7x Closed reduction• 79.8x Open reduction

• CPT– Body part– Open

• Acute/chronic• Internal Fixation or not

– Closed– w/wout Manipulation– w/wout Anesthesia– Application and

removal of first cast or traction included in these codes

Page 15: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Casts and StrappingCasts and Strapping

• ICD-9-CM and CPT– Application included in reduction code– Reported when cast/splint is

• Replacement procedure• Initial service w/out restorative tx

• When performed in ED setting– for comfort and stabilization – patient is to follow-up with another physician for

definitive treatment– only splinting, strapping or casting service is reported– Do NOT assign a CPT code for fracture treatment

without manipulation.

Page 16: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Sprain/Strain SurgerySprain/Strain Surgery

• ICD-9-CM– Repair

• Ligament (see also Arthroplasty) 81.96

– collateral, knee NEC 81.46

– cruciate, knee NEC 81.45

– Reconstruction > Construction and repair

• Knee (joint) NEC 81.47  – Collateral ligaments 81.46– Cruciate ligaments 81.45 – Five-in-one 81.42  – Triad 81.43 

• CPT– Codes often include graft

harvesting • Ligament, Repair 

– Knee Joint 27405 - 27409  • Knee, Reconstruction

– Ligament 27427 - 27429 • Knee, Repair 

– Ligament 27405 - 27409  – Collateral 27405  – Collateral and Cruciate 27409  – Cruciate 27407 – 27409

– Arthroscopic 29888 - 29889  (not in Index here)

Page 17: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Bunion SurgeryBunion Surgery

• ICD-9-CM

• Bunionectomy (radical) 77.59  – with 

• Arthrodesis 77.52  • Osteotomy of first metatarsal 77.51• Resection of joint with prosthetic implant 77.59 • Soft tissue correction NEC 77.53 

Page 18: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

CPT Bunionectomy CodesCPT Bunionectomy Codes

• Hallux valgus repair codes– 28290-28299– Bunion Repair 

• Chevron Procedure 28296  • Concentric Procedure 28296• Joplin Procedure 28294  • Keller Procedure 28292 • Lapidus Procedure 28297• Mayo Procedure 28292• McBride Procedure 28292• Mitchell Procedure 28296• Silver Procedure 28290  • with Implant 28293 

Page 19: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Bunion Surgery ExamplesBunion Surgery Examples

• Austin Bunionectomy and Reverse Austin Bunionectomy– 28296 Hallux valgus (bunion) correction, w/ or w/out

sesamoidectomy; with metatarsalosteotomy (eg, Mitchell, Chevron, or concentric type procedures).

• Distal modified McBride bunionectomy, correction of angular deformity of the first metatarsal w/ proximal osteotomy – 28292, Correction, hallux valgus (bunion), w/ or w/out

sesamoidectomy; Keller, McBride, or Mayo type procedure, 28306 -59, Osteotomy, w/ or w/out lengthening, shortening or angular correction, metatarsal; first metatarsal,

– reported with modifier 59 because this code describes the proximal metatarsal osteotomy performed at another site on the metatarsal (usually requiring a separate incision)

Page 20: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Bursitis ProceduresBursitis Procedures

• ICD-9-CM– 83.03 Bursotomy  

• includes: Removal of calcareous deposit of bursa  • excludes: aspiration of bursa (percutaneous) (83.94)

– 83.5 Bursectomy (incl. debridement of bursa)– 83.96 Injection bursa (therapeutic agent) 

• CPT– Many more codes than CPT– Bursa, Bursocentesis, I&D, etc.

Page 21: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

ArthroscopyArthroscopy

• ICD– Converted to open, code only open w/ V64.43– 80.20-80.29

• CPT – Dx – visualization and synovial Bx ONLY

• 29870 (separate procedure)

– Surgical – anything else done• Includes dx • # of compartments important for some codes

Page 22: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Decompression of Medial Nerve Decompression of Medial Nerve (CTS)(CTS)

• ICD-9-CM–  04.43  Release of carpal tunnel– (Decompression = main term)

• CPT– Carpal Tunnel

• Injection  – Therapeutic 20526

– Carpal Tunnel Syndrome • Decompression 64721

– Arthroscopic 29848 

Page 23: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Arthroplasty (Joint Replacement)Arthroplasty (Joint Replacement)

• ICD-9-CM coding– Based on joint and total/partial replacement– 81.5x = lower extremity joints– 81.8x = upper extremity joints– Add’l Codes

• Hip replacement – type of bearing surface– 00.74 metal on polyethylene– 00.75 metal on metal– 00.76 ceramic on ceramic

• Bone-growth stimulator – add’l code– 78.9x

– Bilateral replacement – code assigned X 2

Page 24: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Arthroplasty (Joint Replacement)Arthroplasty (Joint Replacement)

• CPT coding– 27125 Hemiarthroplasty, hip, partial (eg, femoral stem

prosthesis, bipolar arthroplasty)  notices: For prosthetic replacement following fracture of the hip, use 27236

– 27130 Arthroplasty, acetabular and proximal femoral prosthetic replacement (total hip arthroplasty), with or without autograft or allograft

– 27132  Conversion of previous hip surgery to total hip arthroplasty, with or without autograft or allograft

– 27134 Revision of total hip arthroplasty; both components, with or without autograft or allograft

– 27137  acetabular component only, with or without autograft or allograft

– 27138  femoral component only, with or without allograft

Page 25: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Prosthesis replacementProsthesis replacement

• Due to infection

• ICD-9-CM coding (Dx)

– 1st admission• 996.66, 80.0x• Infection must be cleared (1-2 months)

– 2nd admission• 736.x (Acquired deformity)• Joint revision code

Page 26: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Joint Replacement RevisionJoint Replacement Revision• Adjust or remove and replace• ICD-9-CM coding

– Includes removal of component(s)

• 81.53 hip component NOS• 00.70-00.73 (hip components) add’l code• 81.54 knee component NOS• 00.80- 00.84 (knee components) add’l code• 84.57 removal of joint spacer (cement) add’l code• 81.59, 81.97 joint revision NEC (upper/lower extremities)• 00.74 – 00.76 add’l code (if known)• V43.6 Joint replacement status, if significant for pt care

Page 27: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Joint Replacement RevisionJoint Replacement Revision

• CPT Coding– 27134 Revision of total hip arthroplasty; both

components, with or without autograft or allograft

– 27137  acetabular component only, with or without autograft or allograft

– 27138  femoral component only, with or without allograft

• Many other joint arthroplasties in CPT

Page 28: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Bone Ca SurgeryBone Ca Surgery

• Usual tx – current surgical techniques allow 9 out of 10 pts w/bone cancer in arm/leg to keep limb

• ICD-9-CM– Excision, lesion, bone (no distinction for type)

• CPT– Inconsistent Index

• Tumor, Excision, Bone, Malignant• Go to specific bone

– Tumor (usu. Means ca), Radical, etc.

Page 29: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

CPT Spine ProceduresCPT Spine Procedures

• Distinguish bet. Spinal segments from interspaces– T1 = one vertebra/one segment– T1-T2 = one interspace OR two segments

• Bone grafts – sep. codes– Only one code per operation, even if more than one level

• Instrumentation procedures – sep. codes• Arthrodesis procedures – sep. codes• -62 modifier for 2 surgeons

Page 30: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

CPT Spine OsteotomyCPT Spine Osteotomy

• Anterior/Posterior approach

• Osteotomy code includes– Corpectomy, discectomy, laminectomy

Page 31: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Spinal FusionSpinal Fusion• 3 basic approaches

– Anterior, posterior, lateral transverse

• ICD-9-CM coding– Anterior (81.02-81.36)

• Incision of neck/abdomen• Front of vertebrae (anterior

annulus)

– Posterior (81.03 – 81.38)• Incision of back, directly

over vertebrae

– Lateral Transverse (81.07, 81.37)

• Incision of side• Lamina approach

• Add’l Codes

– Insertion of interbody fusion device – 81.51

• Bak cage, ray-threaded fusion cage, synthetic cage, spacer, bone dowels

– Number of fused discs• 81.62 – 2-3• 81.63 – 4-8• 81.64 – 9+

Page 32: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

360360° Spinal Fusion° Spinal Fusion• Both anterior & posterior portions• Single incision (usually lateral)• 1st – fusion or refusion procedure• 2nd – ALIF, PLIF, OR TLIF

– Anterior Lumbar Interbody Fusion• 81.06, 81.36

– Posterior Lumbar Interbody Fusion• 81.08, 81.38

– Transforaminal Lumbar Interbody Fusion• 81.08, 81.38

Page 33: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Refusion of SpineRefusion of Spine

• Pseudoarthrosis– False joint due to inadequate immobilization

of fx bone– Greater original fusion, more likely

pseudoarthosis will occur, need refusion

• 81.34, 81.35, 81.36, 81.39 = Refusion– Various sites, various approaches

Page 34: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Kyphoplasty for Kyphoplasty for Compression fxsCompression fxs

• Kyphoplasty – reestablish vertebral height– Uses inflatable balloon to gain height– Injection of Polymethylmethacrylate to stabilize– ICD-9-CM - 81.66– CPT

• 22523 Percutaneous vertebral augmentation, including cavity creation (fracture reduction and bone biopsy included when performed) using mechanical device, one vertebral body, unilateral or bilateral cannulation (eg, kyphoplasty); thoracic

• 22524 lumbar• 22525 each add’l thoracic or lumbar vertebral body

(List separately in addition to code for primary procedure) 

Page 35: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Vertebroplasty for Vertebroplasty for Compression fxsCompression fxs• Stabilize/strengthen bone

– Insertion of cement (glue) into body • Polymethylmethacrylate

– NO balloon– ICD-9-CM – 81.65– CPT

• 22520  Percutaneous vertebroplasty, one vertebral body, unilateral or bilateral injection; thoracic

• 22521 lumbar• 22522 each additional thoracic or lumbar

vertebral body • Add’l code for fluoroscopic/CT guidance  

Page 36: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Spinal Disc ProsthesesSpinal Disc Prostheses

• ICD-9-CM Coding– Type of prosthesis – total/partial– Spinal segment

• Cervical – 84.61, 84.62• Thoracic – 84.63 (total/partial – same code)• Lumbarsacral – 84.64, 84.65• No location – 84.60

– Revision/replacement – 84.66-84.69• Synchronous insertion of new prosthesis

Page 37: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

CPT Spine procedure ExamplesCPT Spine procedure Examples

• Arthodesis of T1-T3; autograft from ribs Dual rods inserted w/multiple hooks/wires– 22610, 22614, 22614 – 3 fusions– 22842 - rods– 20936 – autograft

• Surgical repair of L1-2 and L3-L4 by 2 surgeons (distinct parts of procedure)– 22612-62 (reported by each surgeon)– 22614-62 (reported by each surgeon)

Page 38: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Answers to Dx Coding ExercisesAnswers to Dx Coding Exercises

• Primary osteoarthritis of hip– 715.95 (Localized NOT documented)

• Admitted for removal of internal fixation nail that has protruded into surrounding tissue, causing pain– Main term? Complication, mechanical– Type of care? NOT routine follow-up– Code? 996.40

Page 39: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Answers to Dx Coding ExercisesAnswers to Dx Coding Exercises

• Compound fracture, shaft of radius and ulna, due to tackle in football game– 813.93, E886.0, E849.4

• Aftercare for fracture of L4 vertebra– V54.17

• Cervical strain due to MVA, 2ndary to loss of control and collision w/tree. Pt was restrained driver.– 847.0, E816.0 (tree off highway) OR E815.0 (fallen tree on hwy)

• Derangement of knee due to fall from ladder while working on house– 836.2, E881.0, E849.0

Page 40: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

HomeworkHomework

• View ORlive http://www.or-live.com/– Previous webcasts– Browse by specialty– Orthopaedics– April 7, 2009

Spotlight on Beth Israel Orthopedics, New York City Need Adobe Flash Player

– Code the 4 operations– Dx? Procedures – ICD and CPT

Page 42: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Resources (Books)Resources (Books)

• Brown, F. ICD-9-CM Coding Handbook with Answers, 2006. AHA Press.

• Frazier, M. S. & Drzymkowski, J. W. Essentials of Human Diseases and Conditions, 4th ed., Saunders, 2009

• Green, M. A. 3-2-1 Code It! 2nd ed. 2010. Delmar.• Moisio M. A. & E. W. Moisio, Understanding

Laboratory and Diagnostic Tests, Delmar, 1998 (2nd ed? later)

• Scott, A. S. & Fong, E. Body Structures and Functions, 11th ed., Delmar, 2009

Page 43: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Resources (Videos)Resources (Videos)

• ORlive http://www.or-live.com/

• Laminectomy Back Surgery Video. Spine-Health.

– http://www.spine-health.com/video/laminectomy-back-surgery-video

• Microdiscectomy: Lumbar Microdecompression Spine Surgery Video. Spine-Health. – http://www.spine-health.com/video/microdiscectomy-lumbar-micr

odecompression-spine-surgery-video

Page 44: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Resources (Videos)Resources (Videos)

• Minimally Invasive Discectomy. ORLive. – http://www.or-live.com/distributors/NLM/rnh.cfm?id=310

• Pediatric Spinal fusion to correct scoliosis. ORLive. (via NLM link)– www.or-live.com/distributors/NLM/rnh.cfm?id=321

• Spine Fusion Surgery Video. Spine-Health. – http://www.spine-health.com/video/spine-fusion-surgery-video

Page 45: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Resources (Websites)Resources (Websites)

• Acute vs. Chronic Pain. Cleveland Clinic. – http://my.clevelandclinic.org/services/Pain_Management/

hic_Acute_vs_Chronic_Pain.aspx

• A Guided Tour of the Visible Human – http://www.madsci.org/~lynn/VH/tour.html

• Bone scan. Mayo Clinic.– http://www.mayoclinic.com/health/bone-scan/MY00306

• Bunionectomy. Clinical Policy Bulletin: Aetna. – http://www.aetna.com/cpb/medical/data/600_699/0629.html

• Bursitis and Tendinitis; Questions and Answers. National Institute of Arthritis and MS and Skin Diseases. April 2007.– http://www.niams.nih.gov/Health_Info/Bursitis/default.asp

Page 46: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Resources (Websites)Resources (Websites)

• Drugs of Abuse, Chapter 1 The Controlled Substance Act. Drug Enforcement Administration, US DoJ. – http://www.usdoj.gov/dea/pubs/abuse/1-csa.htm

• Feinberg, S. D. MD. Medications and Chronic Pain, 2007 Supplement. American Chronic Pain Association.

– http://www.theacpa.org/documents/ACPA%20Meds%202007%20Final.pdf

• Hallux Valgus (Bunion Deformity). Institute for Foot and

Ankle Reconstruction. Mercy Hospital, Baltimore, MD. – http://footandankle.mdmercy.com/conditions/bigtoe/hallux_valgus.html

Page 47: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Resources (Websites)Resources (Websites)

• Myelography. American Society of Radiologic Technologists.– https://www.asrt.org/content/ThePublic/AboutRadiologicProcedures/Myelography.aspx

• Osteosarcoma Overview. American Cancer Society. – http://www.cancer.org/docroot/CRI/CRI_2_1x.asp?rnav=criov&dt=52

• Planes of Section. A Guided Tour of the Visible Human – http://www.madsci.org/~lynn/VH/planes.html

• Rheumatoid Arthritis: Treatment options. Arthritis Foundation. – http://www.arthritis.org/disease-center.php?disease_id=31&df=treatments

• Staging: Questions and Answers– http://www.cancer.gov/cancertopics/factsheet/Detection/staging

• WebMD. – http://www.webmd.com/default.htm

Page 48: MS Procedural Coding MHA June 11, 2009 Irene Mueller, EdD, RHIA.

Resources (X-plain modules)Resources (X-plain modules)

• Carpal Tunnel Release – Open. X-plain module. Patient Education Institute, Nat’l Library of Medicine– http://www.nlm.nih.gov/medlineplus/tutorials/

carpaltunnelsyndromeopensurgery/htm/index.htm• Myelogram. X-plain module. Patient Education Institute,

Nat’l Library of Medicine– http://www.nlm.nih.gov/medlineplus/tutorials/myelogram/htm/ind

ex.htm