🫁 CPT 31781 — Excision Tracheal Stenosis And Anastomosis; Cervicothoracic
Quick Reference
wRVU: 24.23 | Global Period: 090 | Assistant Payable: Yes | Bilateral Indicator: 0
Rule: CPT 31781 represents a major cervicothoracic tracheal resection and anastomosis. It carries a 90-day global period and does not permit bilateral modifiers since the trachea is a single midline structure.
📋 Clinical Description
CPT 31781 describes the surgical excision of a stenotic (narrowed) segment of the trachea via a cervicothoracic approach, followed by primary end-to-end anastomosis. The surgeon makes an incision that typically extends from the lower neck into the upper chest (such as a partial median sternotomy) to access the cervicothoracic junction of the trachea. The diseased or scarred portion of the airway is carefully dissected and removed to restore a patent airway.
After the stenotic segment is excised, the healthy ends of the trachea are mobilized and sutured together (anastomosis) to re-establish airway continuity. This code is distinguished from CPT 31780, which is limited to a cervical approach without thoracic extension. It is a highly complex procedure often requiring specialized release maneuvers (e.g., suprahyoid or pericardial release) to ensure the anastomosis is tension-free, which is critical for preventing postoperative stricture or dehiscence.
This procedure may be performed in the following clinical contexts:
- Post-intubation injury — Treating severe tracheal stenosis resulting from ischemic necrosis caused by prolonged endotracheal intubation or prior tracheostomy cuff pressure.
- Idiopathic stenosis — Addressing unexplained progressive fibrotic narrowing of the cervicothoracic trachea causing severe dyspnea and stridor in otherwise healthy patients.
- Congenital malformations — Correcting congenital tracheal rings or stenosis in pediatric or adult patients presenting with chronic airway compromise.
- Traumatic injury — Repairing the airway following blunt or penetrating trauma to the lower neck and upper chest that resulted in a crush injury or subsequent stricture.
🔬 Anatomical & Procedural Considerations
| Variant | Mechanism | Key Notes |
|---|---|---|
| Post-Intubation Stenosis | Ischemic necrosis from endotracheal tube cuff pressure leads to fibrotic stricture at the cervicothoracic level. | Requires careful dissection of dense scar tissue. The surgeon must identify and protect the recurrent laryngeal nerves bilaterally during the mobilization of the trachea. |
| Congenital Tracheal Stenosis | Complete cartilaginous rings instead of normal C-shaped rings cause a rigid, narrowed airway. | Often involves a longer segment of the trachea. May require extensive mobilization to achieve a tension-free anastomosis after excision. |
| Neoplastic Obstruction | Primary tracheal tumors (e.g., adenoid cystic carcinoma) causing localized stenosis and airway obstruction. | While 31781 focuses on stenosis, if a tumor is the cause, excision with clear margins is paramount. Frozen sections may be utilized intraoperatively to confirm negative margins before anastomosis. |
Clinical Pearl
Achieving a tension-free anastomosis is the most critical step in cervicothoracic tracheal resection. Surgeons often employ neck flexion (the “guardian stitch” from chin to chest) postoperatively to minimize tension on the suture line during the initial healing phase.
✅ Procedure Includes
- Initial incision (cervical and upper thoracic/sternal split) to expose the cervicothoracic trachea.
- Dissection and isolation of the trachea, including protection of the recurrent laryngeal nerves and thyroid vasculature.
- Excision of the stenotic or diseased tracheal segment.
- Mobilization of the proximal and distal tracheal stumps to allow for approximation.
- Primary end-to-end anastomosis of the trachea using interrupted or continuous sutures.
- Placement of surgical drains and layered closure of the thoracic and cervical incisions.
❌ Excludes / Do Not Report Together
| Code | Description | Relationship |
|---|---|---|
| 31780 | Excision tracheal stenosis and anastomosis; cervical | Represents a less extensive approach (cervical only) and is mutually exclusive to the cervicothoracic approach of 31781. |
| 31899 | Unlisted procedure, trachea, bronchi | Unlisted codes should never be reported when a specific code like 31781 accurately describes the service performed. |
| 31622 | Bronchoscopy, diagnostic | Routine diagnostic bronchoscopy performed at the same session to evaluate the stenosis or check the anastomosis is typically bundled into the major surgical procedure. |
| 32100 | Thoracotomy; major | The surgical approach (including partial sternotomy or thoracotomy necessary for exposure) is bundled into the primary cervicothoracic excision code. |
Bundling Alert
CPT 31781 is a major surgical procedure with a 90-day global period. Routine preoperative and postoperative care, as well as the surgical approach and closure, are bundled. Diagnostic bronchoscopy (31622) is generally bundled if performed for routine intraoperative assessment, but may be separately reportable with modifier -59 or -XU if performed for a distinct diagnostic purpose prior to the decision for surgery.
🌳 Code Tree — Surgery: Respiratory System
CPT 31300-32999 Surgery: Respiratory System
│
├── 31750-31830 Excision, Repair (Trachea and Bronchi)
│ ├── 31770 Bronchoplasty; graft repair (Global: 090)
│ ├── 31775 Bronchoplasty; excision stenosis and anastomosis (Global: 090)
│ ├── 31780 Excision tracheal stenosis and anastomosis; cervical (Global: 090)
│ ├── ▶▶ 31781 ◀◀ Excision tracheal stenosis and anastomosis; cervicothoracic ← YOU ARE HERE (Global: 090)
│ ├── 31785 Excision of tracheal tumor or carcinoma; cervical (Global: 090)
│ └── 31786 Excision of tracheal tumor or carcinoma; thoracic (Global: 090)
│
├── 31899 Unlisted procedure, trachea, bronchi
│
└── 32035-32320 Incision (Lungs and Pleura)
├── 32035 Thoracostomy; with rib resection for empyema
└── 32036 Thoracostomy; with open flap drainage for empyema💰 RVU & Reimbursement Profile
| Component | Value |
|---|---|
| Work RVU | ⚠️ Verify |
| Global Period | 090 |
| Bilateral Indicator | 0 — Bilateral surgery rules do not apply. |
| Assistant Surgeon | 2 — Assistant surgeon is permitted and often necessary. |
| Co‑Surgeon | ⚠️ Verify — Co-surgeon may be permitted depending on payer rules and specialty mix. |
| Team Surgery | 0 — Team surgery not typically permitted. |
| PC/TC Split | 0 — Not applicable to surgical procedures. |
| Modifier -51 Exempt | No — Subject to multiple procedure discounting. |
| Anesthesia | ⚠️ Verify — Base units for intrathoracic/tracheal procedures apply. |
Bilateral Billing Rules
🏷️ Modifier Reference
| Modifier | Name | When to Apply |
|---|---|---|
| -22 | Increased Procedural Services | Apply when the resection is exceptionally difficult, such as extreme scarring from previous surgeries requiring significantly more time and effort. |
| -51 | Multiple Procedures | Apply when performed alongside another distinct, non-bundled surgical procedure during the same operative session. |
| -52 | Reduced Services | Apply if the procedure is partially reduced or eliminated at the physician’s discretion. |
| -53 | Discontinued | Apply if the surgery is terminated after induction of anesthesia due to extenuating circumstances or threats to patient well-being. |
| -58 | Staged | Apply if this procedure was prospectively planned at the time of a previous surgery within the global period. |
| -59 | Distinct Service | Apply to indicate a procedure is distinct or independent from other services performed on the same day. |
| -62 | Two Surgeons | Apply when a thoracic surgeon and an otolaryngologist work together as primary surgeons performing distinct parts of the procedure. |
| -78 | Return to OR | Apply if the patient requires a return to the operating room for a related complication (e.g., anastomotic leak) during the 90-day global period. |
| -79 | Unrelated Procedure | Apply if this surgery is performed during the postoperative period of an entirely unrelated procedure. |
🩺 Common ICD‑10‑CM Pairings
Primary Diagnosis Group
| ICD‑10 | Description | HCC? | Notes |
|---|---|---|---|
| J39.8 | Other specified diseases of upper respiratory tract | ❌ No | Commonly used to capture non-congenital tracheal stenosis. |
| J95.5 | Postprocedural subglottic stenosis | ❌ No | Used when the stenosis is specifically documented as a complication of a prior procedure. |
| Q32.1 | Other congenital malformations of trachea | ❌ No | Used for congenital tracheal stenosis or complete tracheal rings. |
| J98.09 | Other diseases of bronchus, not elsewhere classified | ❌ No | Sometimes utilized for lower airway strictures extending near the carina. |
Secondary Group
| ICD‑10 | Description | HCC? | Notes |
|---|---|---|---|
| R06.1 | Stridor | ❌ No | Captures the primary symptom of severe airway narrowing. |
| R06.02 | Shortness of breath | ❌ No | Captures the dyspnea associated with the tracheal stenosis. |
Etiology / Complication
| ICD‑10 | Description | HCC? | Notes |
|---|---|---|---|
| T85.898A | Other specified complication of other internal prosthetic devices, implants and grafts, initial encounter | ⚠️ Verify | Used if the stenosis is related to a reaction from a previously placed tracheal stent. |
| J95.89 | Other postprocedural complications and disorders of respiratory system, not elsewhere classified | ❌ No | Used to capture iatrogenic causes of the stenosis, such as post-intubation injury. |
Coding Specificity Reminder
Ensure documentation specifies the exact etiology of the stenosis (e.g., congenital, post-intubation, post-tracheostomy, or idiopathic). If the stenosis is a complication of a previous medical device or procedure, sequence the appropriate complication code (e.g., J95.5) first, followed by codes detailing the specific manifestation.
🏥 MS‑DRG Considerations
Inpatient admissions for cervicothoracic tracheal resection typically map to Major Chest Procedures (MS-DRGs 163, 164, 165) depending on the presence of a Major Complication or Comorbidity (MCC) or Complication or Comorbidity (CC). If the patient has a concurrent tracheostomy, the case may group to MS-DRGs 011, 012, or 013. ⚠️ Verify exact relative weights and geometric mean length of stay (GMLOS) in the current fiscal year’s IPPS final rule, as these are subject to annual updates. Ensure all secondary diagnoses are captured to accurately reflect the patient’s severity of illness (SOI) and risk of mortality (ROM).
🔧 ICD‑10‑PCS Equivalents
| PCS Code | Full Description | Modality |
|---|---|---|
| 0BB10ZZ | Excision of Trachea, Open Approach | Open Surgery |
| 0BQ10ZZ | Repair Trachea, Open Approach | Open Surgery |
| 0B110Z4 | Bypass Trachea to Tracheobronchial Tree, Open Approach | Open Surgery |
| 0BW10JZ | Revision of Synthetic Substitute in Trachea, Open Approach | Open Surgery |
PCS Character Analysis
| Position | Character | Value | Definition |
|---|---|---|---|
| 1 | Section | 0 | Medical and Surgical |
| 2 | Body System | B | Respiratory System |
| 3 | Root Operation | B | Excision (cutting out or off, without replacement, a portion of a body part) |
| 4 | Body Part | 1 | Trachea |
| 5 | Approach | 0 | Open (cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure) |
| 6 | Device | Z | No Device |
| 7 | Qualifier | Z | No Qualifier |
Root Operation Comparison
- Excision (0BB) involves cutting out a portion of the trachea (the stenotic segment), which aligns directly with the “excision” portion of CPT 31781.
- Repair (0BQ) involves restoring the body part to its normal anatomic structure and function, which captures the “anastomosis” portion if coded separately, though PCS guidelines often dictate coding the definitive root operation (Excision).
📝 Coding Examples
Example 1
Clinical Scenario:
A 45-year-old male presents with severe dyspnea and stridor. Bronchoscopy reveals a dense, 3 cm fibrotic stricture at the cervicothoracic junction of the trachea, secondary to prolonged intubation three months prior. The patient undergoes an open cervicothoracic tracheal resection. The surgeon performs a partial sternotomy, mobilizes the trachea, excises the 3 cm stenotic segment, and performs a primary end-to-end anastomosis.
| Field | Code | Rationale |
|---|---|---|
| CPT | 31781 | The procedure performed was an excision of tracheal stenosis with anastomosis using a cervicothoracic approach. |
| PDx | J39.8 | Captures the tracheal stenosis. An external cause code for the prior intubation may also be appended. |
Note
The partial sternotomy approach is integral to the cervicothoracic exposure and should not be reported separately with a thoracotomy or sternotomy code.
Example 2
Clinical Scenario:
A 30-year-old female with idiopathic cervicothoracic tracheal stenosis undergoes resection and anastomosis. During the same operative session, the surgeon also performs a completely distinct excision of a benign cervical lymph node for pathological evaluation due to suspicious intraoperative appearance.
| Field | Code | Rationale |
|---|---|---|
| CPT 1 | 31781 | Primary procedure for the cervicothoracic tracheal resection and anastomosis. |
| CPT 2 | 38500--51 | Open excision of a cervical lymph node. Modifier -51 indicates a multiple procedure. |
| PDx | J39.8 | Primary diagnosis for the idiopathic tracheal stenosis. |
Warning
When reporting an additional distinct procedure like a lymph node excision, modifier -51 is required to indicate multiple procedures. Ensure the documentation clearly supports that the lymph node excision was medically necessary and not merely incidental to the tracheal exposure.
Example 3
Clinical Scenario:
A 50-year-old patient is in the 90-day global period of a previous major abdominal surgery. They develop acute, life-threatening tracheal stenosis from a prior traumatic injury and require urgent cervicothoracic tracheal excision and anastomosis.
| Field | Code | Rationale |
|---|---|---|
| CPT | 31781--79 | The tracheal resection is completely unrelated to the prior abdominal surgery. |
| PDx | J39.8 | Captures the tracheal stenosis requiring surgical intervention. |
Global period reminder
Modifier -79 is appended to indicate that the tracheal surgery is completely unrelated to the prior abdominal surgery, ensuring appropriate reimbursement during the active global period.
⚠️ Common Coding Pitfalls
- Pitfall 1: Confusing the cervical approach (31780) with the cervicothoracic approach (31781). Carefully review the operative note for mentions of sternal split, partial sternotomy, or thoracic extension to justify the higher-valued cervicothoracic code.
- Pitfall 2: Unbundling the surgical approach. Billing separately for a thoracotomy (e.g., 32100) or sternotomy when performed solely for exposure of the trachea is inappropriate and constitutes unbundling.
- Pitfall 3: Appending bilateral modifiers. The trachea is a midline structure; appending -50, -RT, or -LT to 31781 will result in immediate claim rejections.
- Pitfall 4: Billing diagnostic bronchoscopy (31622) routinely with the resection. Intraoperative bronchoscopy used to check the anastomosis or confirm the extent of stenosis immediately prior to excision is bundled into the primary procedure.
- Pitfall 5: Failing to append modifier -62 when two surgeons (e.g., Thoracic and ENT) act as co-surgeons. Both surgeons must dictate their own operative notes detailing their specific portion of the procedure to support co-surgery billing.
- Pitfall 6: Incorrectly sequencing etiology codes for post-intubation stenosis. Ensure that complication codes (e.g., from category J95) are sequenced appropriately according to ICD-10-CM guidelines when the stenosis is iatrogenic.
📎 Sources
1. American Medical Association. *CPT 2024 Professional Edition.* AMA; 2023. 2. Centers for Medicare & Medicaid Services. *National Correct Coding Initiative (NCCI) Policy Manual for Medicare Services.* CMS; 2024. 3. Optum360. *ICD-10-CM Expert for Physicians.* Optum360; 2024.Sources listed above correspond to superscript citations throughout this note. Verify all Medicare payment figures against your current CMS PFS Lookup tool and applicable MAC LCD prior to claim submission. Please use the latest AAPC/AHIMA Coding Books to verify each code within this note.