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CPT Code Hierarchy

Current Procedural Terminology, or CPT, is a medical code set and is a common terminology for doctors, goverment, health insurance agencies, and other organizations. CPT codes are used during the medical billing process to classify procedures.

There are six Category 1 CPT codes. They are Anesthesia, Evaluation and Management, Medicine, Pathology and Laboratory, Radiology, and Surgery. Each of these Category 1 CPT codes are broken down into many subcategories which can be found in the chart below.

CPT Major CategoryCPT Minor CategoryStart CodeEnd Code
Anesthesiahead0010000222
Anesthesianeck0030000352
Anesthesiathorax0040000474
Anesthesiaintrathoracic0050000580
Anesthesiaspine and spinal cord0060000670
Anesthesiaupper abdomen [8]0070000797
Anesthesialower abdomen0080000882
Anesthesiaperineum0090200952
Anesthesiapelvis (except hip)0111201190
Anesthesiaupper leg (except knee)0120001274
Anesthesiaknee and popliteal area0132001444
Anesthesialower leg (below knee)0146201522
Anesthesiashoulder and axillary0161001682
Anesthesiaupper arm and elbow0171001782
Anesthesiaforearm, wrist and hand0181001860
Anesthesiaradiological procedures0191601936
Anesthesiaburn excisions or debridement0195101953
Anesthesiaobstetric0195801969
Anesthesiaother procedures0199001999
Surgerygeneral1000010022
Surgeryintegumentary system1004019499
Surgerymusculoskeletal system2000029999
Surgeryrespiratory system3000032999
Surgerycardiovascular system3301037799
Surgeryhemic and lymphatic systems3810038999
Surgerymediastinum and diaphragm3900039599
Surgerydigestive system4049049999
Surgeryurinary system5001053899
Surgerymale genital system5400055899
Surgeryreproductive system and intersex5592055980
Surgeryfemale genital system5640558999
Surgerymaternity care and delivery5900059899
Surgeryendocrine system6000060699
Surgerynervous system6100064999
Surgeryeye and ocular adnexa6509168899
Surgeryauditory system6900069979
Radiologydiagnostic radiology7000076499
Radiologydiagnostic ultrasound7650076999
Radiologyradiologic guidance7700177032
Radiologybreast mammography7705177059
Radiologybone/joint studies7707177084
Radiologyradiation oncology7726177999
Radiologynuclear medicine7800079999
Pathology and Laboratoryorgan 'Bold text'or disease-oriented panels8000080076
Pathology and Laboratorydrug testing8010080103
Pathology and Laboratorytherapeutic drug assays8015080299
Pathology and Laboratoryevocative/suppression testing8040080440
Pathology and Laboratoryconsultations (clinical pathology)8050080502
Pathology and Laboratoryurinalysis8100081099
Pathology and Laboratorychemistry8200084999
Pathology and Laboratoryhematology and coagulation8500285999
Pathology and Laboratoryimmunology8600086849
Pathology and Laboratorytransfusion medicine8685086999
Pathology and Laboratorymicrobiology8700187999
Pathology and Laboratoryanatomic pathology (postmortem)8800088099
Pathology and Laboratorycytopathology8810488199
Pathology and Laboratorycytogenetic studies8823088299
Pathology and Laboratorysurgical pathology8830088399
Pathology and Laboratoryin vivo (transcutaneous) lab procedures8872088741
Pathology and Laboratoryother procedures8904989240
Pathology and Laboratoryreproductive medicine procedures8925089398
Medicineimmune globulins, serum or recombinant prods9028190399
Medicineimmunization administration for vaccines/toxoids9046590474
Medicinevaccines, toxoids9047690749
Medicinepsychiatry9080190899
Medicinebiofeedback9090190911
Medicinedialysis9093590999
Medicinegastroenterology9100091299
Medicineophthalmology9200292499
Medicinespecial otorhinolaryngologic services9250292700
Medicinecardiovascular9295093799
Medicinenoninvasive vascular diagnostic studies9387593990
Medicinepulmonary9400294799
Medicineallergy and clinical immunology9500495199
Medicineendocrinology9525095251
Medicineneurology and neuromuscular procedures9580396020
Medicinecentral nervous system assessments/tests (neuro-cognitive, mental status, speech testing)9610196125
Medicinehealth and behavior assessment/intervention9615096155
Medicinehydration, therapeutic, prophylactic, diagnostic injections and infusions, and chemotherapy and other highly complex drug or highly complex biologic agent administration9636096549
Medicinephotodynamic therapy9656796571
Medicinespecial dermatological procedures9690096999
Medicinephysical medicine and rehabilitation9700197799
Medicinemedical nutrition therapy9780297804
Medicineacupuncture9781097814
Medicineosteopathic manipulative treatment9892598929
Medicinechiropractic manipulative treatment9894098943
Medicineeducation and training for patient self-management9896098962
Medicinenon-face-to-face nonphysician services9896698969
Medicinespecial services, procedures and reports9900099091
Anesthesiaqualifying circumstances for anesthesia9910099140
Anesthesiamoderate (conscious) sedation9914399150
Medicineother services and procedures9917099199
Evaluation and ManagementOffice/other outpatient services9920199215
Evaluation and ManagementHospital observation services9921799220
Evaluation and ManagementHospital inpatient services9922199239
Evaluation and ManagementConsultations9924199255
Evaluation and ManagementEmergency department services9928199288
Evaluation and ManagementCritical care services9929199292
Evaluation and ManagementNursing facility services9930499318
Evaluation and ManagementDomiciliary, rest home (boarding home) or custodial care services9932499337
Evaluation and ManagementDomiciliary, rest home (assisted living facility), or home care plan oversight services9933999340
Evaluation and ManagementHome health services9934199350
Evaluation and ManagementProlonged services9935499360
Evaluation and ManagementAnatomic pathology (postmortem)9936399368
Evaluation and ManagementCare plan oversight services9937499380
Evaluation and ManagementPreventive medicine services9938199429
Evaluation and ManagementNon-face-to-face physician services9944199444
Evaluation and ManagementSpecial evaluation and management services9945099456
Evaluation and ManagementNewborn care services9946099465
Evaluation and ManagementInpatient neonatal intensive, and pediatric/neonatal critical, care services9946699480
Evaluation and ManagementComplex chronic care coordination services9948799489
Evaluation and ManagementTransitional care management services9949599496
Evaluation and Managementevaluation and management services99499 Othe
Medicinehome health procedures/services9950099602
Medicinemedication therapy management services9960599607

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