Exhaustive Enumeration of Medical Procedural Branches

Got it — you want a comprehensive enumeration of all procedural branches that could follow from the intake, beyond the high-level categories we’ve discussed. Below is a detailed, systematic taxonomy of medical procedural pathways, organized by major branch, sub-branch, and code set (CPT/HCPCS/ICD-10-PCS). This essentially “exhausts” the decision tree into a checklist.





Exhaustive Enumeration of Medical Procedural Branches




Root: Patient Encounter (E/M Node)



CPT 99202–99215 (outpatient), 99281–99285 (ED), 99221–99223 (inpatient admit)


  • Always documented first, anchors the visit
  • Drives medical necessity for downstream procedures






Branch 1: No Procedure / Conservative Care



  • E/M only (documented counseling, medication management)
  • Possible adjunct codes:
    • Prescription drug management (ICD-10 Z79.* status codes)
    • Patient education / counseling (included in E/M or 99401–99404 if separately reportable)
    • Care coordination / chronic care management (CPT 99490+)






Branch 2: Minor Office-Based Procedures



  • Wound care
    • CPT 97597–97598 (debridement)
    • CPT 12001–13160 (repair, simple–complex)
    • CPT 10040–10180 (incision/drainage, foreign body removal)
  • Skin procedures
    • CPT 11400–11646 (excision benign/malignant lesions)
    • CPT 17110–17111 (destruction of benign lesions)
    • Cryotherapy, chemical cautery (CPT 17000–17004)
  • Drainage & aspiration
    • CPT 10160 (puncture aspiration abscess/cyst)
    • CPT 20600–20611 (arthrocentesis, joint injections)






Branch 3: Diagnostic Testing



  • Imaging
    • X-ray CPT 70010–76499 (by region)
    • CT CPT 70450–76499
    • MRI CPT 70551–76499
    • Ultrasound CPT 76506–76999
  • Electrodiagnostics
    • CPT 93000–93010 (ECG)
    • CPT 95860–95872 (EMG)
  • Lab
    • Blood/chemistry CPT 80047–89398
    • Microbiology CPT 87040–87999
    • Molecular pathology CPT 81200–81479
  • Pathology
    • CPT 88300–88399 (surgical pathology)
    • CPT 88342–88344 (immunohistochemistry)






Branch 4: Therapeutic Interventions



  • Infusions, injections
    • CPT 96360–96379 (hydration, infusion therapy)
    • CPT 96372–96377 (therapeutic injections)
  • Medication administration
    • Vaccinations CPT 90460–90474
    • Chemotherapy CPT 96401–96549
  • Physical therapy / rehab
    • CPT 97110–97799 (therapeutic exercise, modalities)






Branch 5: Specialty Procedures



  • Ob/Gyn
    • CPT 57400–57570 (colposcopy, biopsy, D&C)
    • CPT 58300 (IUD insertion), 58301 (removal)
  • ENT
    • CPT 31500–31579 (laryngoscopy, airway procedures)
    • CPT 69209–69210 (ear wax removal)
  • Ophthalmology
    • CPT 92002–92014 (eye exams)
    • CPT 65205–65222 (foreign body removal)
  • Urology
    • CPT 51701–51798 (bladder cath, urodynamics)
    • CPT 52000 (cystoscopy)






Branch 6: Escalation to ED / OR / Inpatient



  • ED evaluation & management
    • CPT 99281–99285
  • Surgical procedures (ICD-10-PCS & CPT 10021–69990)
    • General surgery: appendectomy, cholecystectomy, hernia repair
    • Orthopedic: fracture fixation CPT 23500–29828
    • Neurosurgery: craniotomy, laminectomy
  • Anesthesia
    • CPT 00100–01999 (based on surgical site & time)
  • Critical care
    • CPT 99291–99292 (critical care, first + additional hour)






Branch 7: Post-Encounter & Follow-Up



  • Post-procedure E/M
    • CPT 99211–99215 (if not bundled)
  • Global surgical follow-up
    • No additional charge during global period unless unrelated condition
  • Rehab and monitoring
    • PT/OT/ST CPT 97010–97799
    • Remote monitoring CPT 99453–99458






Branch 8: Care Coordination & Administrative Codes



  • Telehealth follow-up
    • CPT 99421–99423 (online E/M)
    • CPT 99441–99443 (phone E/M)
  • Care management
    • CPT 99490+ (chronic care management)
    • CPT 99495–99496 (transitional care management)
  • Preventive services
    • CPT 99381–99397 (annual preventive visits)
    • Screening codes for cancer, depression, STI, etc.






Why Exhaustive Enumeration Helps



Having this full branch list allows:


  • Coders to cross-check documentation against every possible code set
  • Revenue cycle teams to ensure no missed charges
  • Clinical leaders to streamline workflows (pre-book imaging, procedures)
  • Quality programs to map encounters to outcomes and performance metrics





Would you like me to convert this enumeration into a massive wall-chart style flow diagram (multi-level branching) so you can visually see how all CPT/ICD branches interconnect? This would essentially be a “master coding decision tree” graphic.


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