Clinical Context
A 58-year-old male with chronic, treatment-refractory central hypoventilation and symptomatic diaphragmatic dysfunction is scheduled for implantation of a phrenic nerve stimulator system with pulse generator placement. During the same operative session, the implanting physician inserts a transvenous sensing lead into a central vein (commonly the subclavian or axillary vein) to allow the neurostimulation system to detect intrinsic diaphragmatic or respiratory signals. The procedure is performed in an operating room or cardiac catheterization laboratory under general anesthesia or monitored anesthesia care. The workflow includes pre-procedure device and lead selection, venous access and lead placement under fluoroscopic guidance, testing of sensing and stimulation parameters, pocket creation for the pulse generator, generator connection and placement, and wound closure. Intraoperative documentation includes indication for device, laterality, veins accessed, lead model and lengths, sensing thresholds and impedance measurements, fluoroscopy time, and any intraoperative complications. Post-procedure documentation includes device programming settings, immediate post-op chest radiograph if obtained to confirm lead position, discharge instructions and plans for device follow-up programming and pulmonary or neuromuscular evaluation.
Coding Specifications
| Modifier | Description | When to Use |
|---|
00 | No modifier | Not used for external reporting; typically omitted |
22 | Increased procedural services | When work required is substantially greater than typical for lead insertion during the same session
23 | Unusual anesthesia | When general anesthesia is medically necessary for an otherwise non-anesthetized procedure
50 | Bilateral procedure | When identical procedures are performed on both sides during the session (rare for phrenic system insertion)
52 | Reduced services | When a reduced service is performed compared to the full procedure
53 | Discontinued procedure | When the procedure is started but terminated due to extenuating circumstances
54 | Surgical care only | When billing only the surgical portion and another provider bills the postoperative care
55 | Postoperative management only | When billing only postoperative management
62 | Two surgeons | When two surgeons work together as primary surgeons
63 | Procedure performed on infants less than 4 kg | When applicable per payer guidelines for pediatric patients
66 | Surgical team | When multiple surgeons perform distinct portions as a team
78 | Return to OR for related procedure following initial operation | When a return to OR is required for a complication or revision
80 | Assistant surgeon | When an assistant surgeon is required and documented
81 | Minimum assistant surgeon | When a reduced assistant role is documented
| Taxonomy Code | Specialty | Notes |
|---|
207RH0000X | Physical Medicine & Rehabilitation | Physicians who manage neuromuscular dysfunction and may coordinate phrenic neurostimulation care |
2084P0800X | Neurology | Neurologists involved in evaluation of central hypoventilation and neuromuscular respiratory failure
2086S0120X | Pulmonary Disease | Pulmonologists who assess respiratory mechanics and long-term ventilatory needs
2084N0400X | Cardiovascular Disease (Cardiology) | Cardiac electrophysiologists or device implanters experienced with transvenous lead placement
252S00000X | Clinical Cardiac Electrophysiology | Specialists who perform device and lead implantation under fluoroscopy
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|
G47.31 | Obstructive sleep apnea (adult) | Sleep-disordered breathing may coexist with hypoventilation disorders and prompt evaluation for diaphragmatic stimulation when central control is impaired |
G47.39 | Other sleep disorders | Includes central sleep-related breathing disorders that may necessitate phrenic stimulation
G31.9 | Degenerative disease of nervous system, unspecified | Neuromuscular degeneration can result in diaphragmatic weakness addressed by phrenic nerve stimulation
G71.3 | Myasthenia gravis | Neuromuscular junction disorders producing diaphragmatic weakness or respiratory failure
J96.00 | Acute respiratory failure, unspecified whether with hypoxia or hypercapnia | Severe respiratory insufficiency that may lead to consideration of implantable respiratory assist devices
G70.3 | Lambert-Eaton myasthenic syndrome | Paraneoplastic or autoimmune causes of respiratory muscle weakness that can be indications for neurostimulation
G25.0 | Essential tremor | Included as a neurologic condition seen by device specialists though not a direct indication; listed for completeness
R06.81 | Apnea | Clinical symptom prompting evaluation for respiratory stimulation therapies
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|
33208 | Insertion of new or replacement pulse generator, pacemaker, dual lead (atrial and ventricular) | Analogous generator insertion procedures; informs billing when a separate pulse generator insertion is performed during the same session |
33224 | Lead revision; transvenous pacing lead, open or percutaneous | Performed when an existing lead requires revision during the same operative encounter
33206 | Insertion of pacing cardioverter-defibrillator, with transvenous lead(s) | Related transvenous lead insertion techniques and device workflow
33285 | Revision or removal of phrenic nerve stimulator lead | Performed for lead complications or revisions after initial implantation
95970 | Electronic analysis of implanted neurostimulator pulse generator system (programming) | Device interrogation and programming that typically occurs intraoperatively or during follow-up visits
36556 | Insertion of non-tunneled centrally inserted central venous catheter (e.g., PICC) | Describes venous access techniques and CPT logic for percutaneous central venous access commonly used for transvenous lead entry