ICD-10-PCS Alphabetic Index · FY 2026 Letter M

PCS Index Terms Starting With M ICD-10-PCS

The letter M section of the FY 2026 ICD-10-PCS Alphabetic Index carries 167 main terms, from Macronutrient Content to Myringotomy. Terms with a direct entry link straight to the code or table, see references point to the main term that holds the codes, use references map anatomy and brand names to their PCS values, and terms with a handful of sub-entries render in full right here. The largest terms open their own full index page.

✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026

167

Main Terms

740

Index Entries

Direct Entries

Cross-refs

A B C D E F G H I J K LMN O P Q R S T U V W X Y Z 3

167 of 167 shown

Macronutrient Content, Computer-aided Assessment for Nutrition Management, MeasurementCode XXEZXAB
MaculaSub-entries
use Retina, Right
use Retina, Left
MAGEC(R) Spinal Bracing and Distraction SystemUse use Magnetically Controlled Growth Rod(s) in New Technology
Magnet extraction, ocular foreign bodyCross-ref See: Extirpation, Eye 08C
Magnetic Resonance Imaging (MRI)Sub-entries
Abdomen BW30
Ankle
Left BQ3H
Right BQ3G
View all 197 entries for Magnetic Resonance Imaging →
Magnetic-guided radiofrequency endovascular fistulaSub-entries
Radial Artery, Left 031C3ZF
Radial Artery, Right 031B3ZF
Ulnar Artery, Left 031A3ZF
Ulnar Artery, Right 03193ZF
Magnetically Controlled Growth Rod(s)Sub-entries
Cervical XNS3
Lumbar XNS0
Thoracic XNS4
Magnus Neuromodulation System (MNS)Code X0Z0X18
MalleotomyCross-ref See: Drainage, Ear, Nose, Sinus 099
MalleusSub-entries
use Auditory Ossicle, Right
use Auditory Ossicle, Left
Mammaplasty, mammoplastySub-entries
See: Alteration, Skin and Breast 0H0
See: Repair, Skin and Breast 0HQ
See: Replacement, Skin and Breast 0HR
See: Supplement, Skin and Breast 0HU
Mammary ductSub-entries
use Breast, Right
use Breast, Left
use Breast, Bilateral
Mammary glandSub-entries
use Breast, Right
use Breast, Left
use Breast, Bilateral
MammectomySub-entries
See: Excision, Skin and Breast 0HB
See: Resection, Skin and Breast 0HT
Mammillary bodyUse use Hypothalamus
MammographyCross-ref See: Plain Radiography, Skin, Subcutaneous Tissue and Breast BH0
MammotomyCross-ref See: Drainage, Skin and Breast 0H9
Mandibular nerveUse use Trigeminal Nerve
Mandibular notchSub-entries
use Mandible, Right
use Mandible, Left
MandibulectomySub-entries
See: Excision, Head and Facial Bones 0NB
See: Resection, Head and Facial Bones 0NT
ManipulationSub-entries
Adhesions See: Release
Chiropractic See: Chiropractic Manipulation
Manual removal, retained placentaCross-ref See: Extraction, Products of Conception, Retained 10D1
ManubriumUse use Sternum
MapSub-entries
Basal Ganglia 00K8
Brain 00K0
Connectomic Analysis 00K0XZ1
Cerebellum 00KC
View all 11 entries for Map →
MappingSub-entries
Connectomic Analysis (Brain) 00K0XZ1
Doppler ultrasound See: Ultrasonography
Electrocardiogram only See: Measurement, Cardiac 4A02
Maribavir Anti-infectiveCode XW0
Mark IV Breathing Pacemaker SystemUse use Stimulator Generator in Subcutaneous Tissue and Fascia
Marnetegragene AutotemcelCode XW1
MarrowStim(tm) PAD Kit for CBMA (Concentrated Bone Marrow Aspirate)Use use Other Substance
MarrowStim(tm) PAD Kit, for injection of concentrated bone marrow aspirateCross-ref See: Introduction of substance in or on, Muscle 3E02
MarsupializationSub-entries
See: Drainage
See: Excision
Massage, cardiacSub-entries
External 5A12012
Open 02QA0ZZ
Masseter muscleUse use Head Muscle
Masseteric fasciaUse use Subcutaneous Tissue and Fascia, Face
MastectomySub-entries
See: Excision, Skin and Breast 0HB
See: Resection, Skin and Breast 0HT
Mastoid (postauricular) lymph nodeSub-entries
use Lymphatic, Right Neck
use Lymphatic, Left Neck
Mastoid air cellsSub-entries
use Mastoid Sinus, Right
use Mastoid Sinus, Left
Mastoid processSub-entries
use Temporal Bone, Right
use Temporal Bone, Left
MastoidectomySub-entries
See: Excision, Ear, Nose, Sinus 09B
See: Resection, Ear, Nose, Sinus 09T
MastoidotomyCross-ref See: Drainage, Ear, Nose, Sinus 099
MastopexySub-entries
See: Repair, Skin and Breast 0HQ
See: Reposition, Skin and Breast 0HS
MastorrhaphyCross-ref See: Repair, Skin and Breast 0HQ
MastotomyCross-ref See: Drainage, Skin and Breast 0H9
MAXFRAME AUTOSTRUT(tm) Multi-Axial Correction SystemUse use Ring External Fixation Device with Automated Strut Adjustment in New Technology
Maxillary arterySub-entries
use External Carotid Artery, Right
use External Carotid Artery, Left
Maxillary nerveUse use Trigeminal Nerve
Maximo II DR (VR)Use use Defibrillator Generator in 0JH
Maximo II DR CRT-DUse use Cardiac Resynchronization Defibrillator Pulse Generator in 0JH
MeasurementSub-entries
Arterial
Flow
Coronary 4A03
Intracranial 4A03X5D
View all 120 entries for Measurement →
Meatoplasty, urethraCross-ref See: Repair, Urethra 0TQD
MeatotomyCross-ref See: Drainage, Urinary System 0T9
Mechanical chest compression (mCPR)Code 5A1221J
Mechanical Initial Specimen Diversion Technique Using Active Negative Pressure (blood collection)Code XXE5XR7
Mechanical ventilationCross-ref See: Performance, Respiratory 5A19
Medela Invia NPWT SystemCross-ref See: Activities of Daily Living Treatment, Rehabilitation F08
Medial canthusSub-entries
use Lower Eyelid, Right
use Lower Eyelid, Left
Medial collateral ligament (MCL)Sub-entries
use Knee Bursa and Ligament, Right
use Knee Bursa and Ligament, Left
Medial condyle of femurSub-entries
use Lower Femur, Right
use Lower Femur, Left
Medial condyle of tibiaSub-entries
use Tibia, Right
use Tibia, Left
Medial cuneiform boneSub-entries
use Tarsal, Right
use Tarsal, Left
Medial epicondyle of femurSub-entries
use Lower Femur, Right
use Lower Femur, Left
Medial epicondyle of humerusSub-entries
use Humeral Shaft, Right
use Humeral Shaft, Left
Medial malleolusSub-entries
use Tibia, Right
use Tibia, Left
Medial meniscusSub-entries
use Knee Joint, Right
use Knee Joint, Left
Medial plantar arterySub-entries
use Foot Artery, Right
use Foot Artery, Left
Medial plantar nerveUse use Tibial Nerve
Medial popliteal nerveUse use Tibial Nerve
Medial rectus muscleSub-entries
use Extraocular Muscle, Right
use Extraocular Muscle, Left
Medial sural cutaneous nerveUse use Tibial Nerve
Median antebrachial veinSub-entries
use Basilic Vein, Right
use Basilic Vein, Left
Median cubital veinSub-entries
use Basilic Vein, Right
use Basilic Vein, Left
Median sacral arteryUse use Abdominal Aorta
Mediastinal cavityUse use Mediastinum
Mediastinal lymph nodeUse use Lymphatic, Thorax
Mediastinal spaceUse use Mediastinum
MediastinoscopyCode 0WJC4ZZ
Medication ManagementSub-entries GZ3ZZZZ
for substance abuse
Antabuse HZ83ZZZ
Bupropion HZ87ZZZ
Clonidine HZ86ZZZ
View all 12 entries for Medication Management →
MeditationCode 8E0ZXY5
Medtronic Endurant(R) II AAA stent graft systemUse use Intraluminal Device
Meissner's (submucous) plexusUse use Abdominal Sympathetic Nerve
Melody(R) transcatheter pulmonary valveUse use Zooplastic Tissue in Heart and Great Vessels
Melphalan Hydrochloride AntineoplasticCode XW053T9
Membranous urethraUse use Urethra
MeningeorrhaphySub-entries
See: Repair, Cerebral Meninges 00Q1
See: Repair, Spinal Meninges 00QT
Meniscectomy, kneeSub-entries
See: Excision, Joint, Knee, Right 0SBC
See: Excision, Joint, Knee, Left 0SBD
Mental foramenSub-entries
use Mandible, Right
use Mandible, Left
Mentalis muscleUse use Facial Muscle
MentoplastyCross-ref See: Alteration, Jaw, Lower 0W05
Merit WRAPSODY(R) CIE (Cell-Impermeable Endoprosthesis)Use use Intraluminal Device, Cell Impermeable in New Technology
Meropenem-vaborbactam Anti-infectiveUse use Other Anti-infective
MesenterectomyCross-ref See: Excision, Mesentery 0DBV
Mesenteriorrhaphy, mesenterorrhaphyCross-ref See: Repair, Mesentery 0DQV
MesenteriplicationCross-ref See: Repair, Mesentery 0DQV
MesoappendixUse use Mesentery
MesocolonUse use Mesentery
Metacarpal ligamentSub-entries
use Hand Bursa and Ligament, Right
use Hand Bursa and Ligament, Left
Metacarpophalangeal ligamentSub-entries
use Hand Bursa and Ligament, Right
use Hand Bursa and Ligament, Left
Metal on metal bearing surfaceUse use Synthetic Substitute, Metal in 0SR
Metatarsal ligamentSub-entries
use Foot Bursa and Ligament, Right
use Foot Bursa and Ligament, Left
MetatarsectomySub-entries
See: Excision, Lower Bones 0QB
See: Resection, Lower Bones 0QT
Metatarsophalangeal (MTP) jointSub-entries
use Metatarsal-Phalangeal Joint, Right
use Metatarsal-Phalangeal Joint, Left
Metatarsophalangeal ligamentSub-entries
use Foot Bursa and Ligament, Right
use Foot Bursa and Ligament, Left
MetathalamusUse use Thalamus
Micro-Driver stent (RX) (OTW)Use use Intraluminal Device
MicroMed HeartAssistUse use Implantable Heart Assist System in Heart and Great Vessels
Microsurgical Lymph BypassCross-ref See: Bypass, Lymphatic and Hemic Systems 071
Micrus CERECYTE microcoilUse use Intraluminal Device, Bioactive in Upper Arteries
Midcarpal jointSub-entries
use Carpal Joint, Right
use Carpal Joint, Left
Middle cardiac nerveUse use Thoracic Sympathetic Nerve
Middle cerebral arteryUse use Intracranial Artery
Middle cerebral veinUse use Intracranial Vein
Middle colic veinUse use Colic Vein
Middle genicular arterySub-entries
use Popliteal Artery, Right
use Popliteal Artery, Left
Middle hemorrhoidal veinSub-entries
use Hypogastric Vein, Right
use Hypogastric Vein, Left
Middle meningeal artery, intracranial portionUse use Intracranial Artery
Middle rectal arterySub-entries
use Internal Iliac Artery, Right
use Internal Iliac Artery, Left
Middle suprarenal arteryUse use Abdominal Aorta
Middle temporal arterySub-entries
use Temporal Artery, Right
use Temporal Artery, Left
Middle turbinateUse use Nasal Turbinate
Mineral-based Topical Hemostatic AgentCode XW0
Minima Stent SystemUse use Intraluminal Device, Expandable in New Technology
MIRODERM(tm) Biologic Wound MatrixUse use Nonautologous Tissue Substitute
MIRODERM(tm) skin graftCross-ref See: Replacement, Skin and Breast 0HR
MitraClip valve repair systemUse use Synthetic Substitute
Mitral annulusUse use Mitral Valve
Mitroflow(R) Aortic Pericardial Heart ValveUse use Zooplastic Tissue in Heart and Great Vessels
MNS (Magnus Neuromodulation System)Code X0Z0X18
Mobilization, adhesionsCross-ref See: Release
Molar glandUse use Buccal Mucosa
MolecuLight i:X(R) wound imagingCross-ref See: Other Imaging, Anatomical Regions BW5
Molybdenum Rhenium Alloy Spinal Stabilization DeviceSub-entries
Cervical Vertebral XRH1
2 or more XRH2
Cervicothoracic Vertebral XRH4
Thoracic Vertebral XRH6
MonitoringSub-entries
Adhesive Ultrasound Patch Technology, Blood Flow XX25X0A
Arterial
Flow
Coronary 4A13
View all 104 entries for Monitoring →
Monitoring Device, HemodynamicSub-entries
Abdomen 0JH8
Chest 0JH6
MoRe(R) Superalloy(tm) spinal stabilization deviceUse use Molybdenum Rhenium Alloy Spinal Stabilization Device in New Technology
Mosaic Bioprosthesis (aortic) (mitral) valveUse use Zooplastic Tissue in Heart and Great Vessels
Mosunetuzumab AntineoplasticCode XW0
Motor Function AssessmentCode F01
Motor TreatmentCode F07
Mozafancogene AutotemcelCode XW1
MR AngiographySub-entries
See: Magnetic Resonance Imaging (MRI), Heart B23
See: Magnetic Resonance Imaging (MRI), Upper Arteries B33
See: Magnetic Resonance Imaging (MRI), Lower Arteries B43
MULTI-LINK (VISION)(MINI-VISION)(ULTRA) Coronary Stent SystemUse use Intraluminal Device
Multi-plane Flex Technology Bioprosthetic ValveCode X2RJ3RA
Multiple sleep latency testCode 4A0ZXQZ
Muscle Compartment Pressure, Micro-Electro-Mechanical SystemCode XX2F3W9
Musculocutaneous nerveUse use Brachial Plexus
MusculopexySub-entries
See: Repair, Muscles 0KQ
See: Reposition, Muscles 0KS
Musculophrenic arterySub-entries
use Internal Mammary Artery, Right
use Internal Mammary Artery, Left
MusculoplastySub-entries
See: Repair, Muscles 0KQ
See: Supplement, Muscles 0KU
MusculorrhaphyCross-ref See: Repair, Muscles 0KQ
Musculospiral nerveUse use Radial Nerve
MY01 Continuous Compartmental Pressure MonitorCode XX2F3W9
MyectomySub-entries
See: Excision, Muscles 0KB
See: Resection, Muscles 0KT
MyelencephalonUse use Medulla Oblongata
MyelogramSub-entries
CT See: Computerized Tomography (CT Scan), Central Nervous System B02
MRI See: Magnetic Resonance Imaging (MRI), Central Nervous System B03
Myenteric (Auerbach's) plexusUse use Abdominal Sympathetic Nerve
Myocardial Bridge ReleaseCross-ref See: Release, Artery, Coronary
MyomectomyCross-ref See: Excision, Female Reproductive System 0UB
MyometriumUse use Uterus
MyopexySub-entries
See: Repair, Muscles 0KQ
See: Reposition, Muscles 0KS
MyoplastySub-entries
See: Repair, Muscles 0KQ
See: Supplement, Muscles 0KU
MyorrhaphyCross-ref See: Repair, Muscles 0KQ
MyoscopyCross-ref See: Inspection, Muscles 0KJ
MyotomySub-entries
See: Division, Muscles 0K8
See: Drainage, Muscles 0K9
MyringectomySub-entries
See: Excision, Ear, Nose, Sinus 09B
See: Resection, Ear, Nose, Sinus 09T
MyringoplastySub-entries
See: Repair, Ear, Nose, Sinus 09Q
See: Replacement, Ear, Nose, Sinus 09R
See: Supplement, Ear, Nose, Sinus 09U
MyringostomyCross-ref See: Drainage, Ear, Nose, Sinus 099
MyringotomyCross-ref See: Drainage, Ear, Nose, Sinus 099

Related References

ICD-10-PCS Alphabetic Index ICD-10-PCS Code Tables ICD-10-PCS Code Lookup

Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-PCS Alphabetic Index release files, effective October 1, 2025 through September 30, 2026.