31502

🏥 31502 — Tracheotomy Tube Change Prior to Establishment of Fistula Tract

Code Overview

CPT 31502 describes the tracheotomy tube change prior to establishment of fistula tract — the act of removing and replacing an existing tracheostomy tube at a time when the tracheal opening (stoma) has not yet matured into a stable fistula tract. It is one of the most situationally specific procedural codes in airway management, applicable only within a narrow clinical time window following a new tracheostomy.

CPT 31502 exists as a distinct, separately billable procedure precisely because changing a tracheostomy tube before the stoma matures into a stable tract is a clinically challenging, potentially dangerous procedural intervention requiring physician skill — unlike routine tube changes in a well-established, healed stoma, which carry no separately billable CPT code. The code carries a zero (000) global day period, meaning it has no pre-operative or post-operative component built in and can be billed for the single encounter at which it is performed.

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Full Code Description

Element	Detail
CPT Code	31502
Full Descriptor	Tracheotomy tube change prior to establishment of fistula tract
Section	Larynx (31500-31599)
System	Respiratory System
Global Period	000 — Zero days (no pre-op or post-op period)
wRVU	~1.30
Facility Total RVU	~1.89
Non-Facility Total RVU	~3.12
Assistant Surgeon	Not allowed
Bilateral	Not applicable
Add-On Code	No
Separate Procedure	No
Modifier 51 Exempt	No
Telehealth	No
Anesthesia Code	00320 — Anesthesia for procedures on the larynx and trachea

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Clinical Description

The Tracheostomy Fistula Tract — Core Concept

Understanding CPT 31502 requires understanding the anatomy and physiology of the tracheal stoma and fistula tract formation:

Immediately after tracheostomy:
When a new tracheostomy is created (CPT 31600, 31601, 31603, 31605, 31610), the surgeon incises the skin, subcutaneous tissue, and anterior tracheal wall to create a direct opening into the trachea. A tracheostomy tube is inserted through this fresh incision and secured externally with tracheostomy ties or a securing device.

At this stage, the stoma is an acute surgical wound — there is no established epithelialized tunnel or tract connecting the skin surface to the tracheal lumen. The pathway through which the tube travels consists of:

• A fresh skin incision

• Subcutaneous tissue planes that have simply been separated

• Pretracheal fascia and strap muscle fibers

• An incision in the anterior tracheal wall

The fistula tract — maturation process:
Over the days and weeks following tracheostomy, the body’s wound healing process creates a mature tracheomalacic fistula tract (also called a tracheomalacic sinus tract or tracheostomy stoma). This involves:

• Epithelialization of the wound edges — skin and tracheal mucosa gradually grow toward each other along the tract

• Contraction of the tract walls around the tube

• Formation of granulation tissue

• Progressive stabilization of the tract walls, which become firm and resistant to collapse

Why pre-fistula tube changes are dangerous:
Before the tract matures, the passage through which the tracheostomy tube passes is an unstable, soft tissue tunnel that can collapse, shift, or close rapidly when the tube is removed. The risk of losing the airway during an early tube change is substantial:

• False passage creation — when reinserting the tube into an immature tract, the tube can be advanced into a false lumen (subcutaneous tissue, mediastinum) rather than back into the tracheal lumen; this creates a non-functioning airway with potentially fatal consequences if not recognized immediately

• Stoma closure — the immature tract walls can retract and collapse within seconds of tube removal, making reinsertion impossible without urgent surgical intervention

• Bleeding — the fresh surgical wound is still vascularized and friable; manipulation can cause significant hemorrhage that obscures visualization

• Subcutaneous emphysema — if the tube is misplaced and ventilation is attempted through a false passage

These risks collectively justify the additional physician work of an early tube change as a separately reimbursable procedural service, not merely a routine nursing or bedside task. Once the tract is mature and the stoma is well-epithelialized (typically 7-14 days post-operatively in adults, longer in pediatric and high-risk patients), tube changes are straightforward and are NOT separately billable under CPT — they are included in the E/M service for the visit.

What Constitutes an “Established” Fistula Tract?

CPT does not provide a precise number of days to define when the fistula tract is “established.” The determination is clinical, provider-documented, and patient-specific. Key principles:

• Typical timeframe for tract establishment: 7-14 days in average adult patients following elective tracheostomy; however, this is variable based on:

  • Patient age (older patients and neonates may take longer)

  • Body habitus (obese patients with thicker necks have longer, less stable tracts)

  • Prior neck surgery or radiation (disrupted normal tissue planes; impaired wound healing)

  • Systemic factors (malnutrition, immunosuppression, diabetes, corticosteroids impair tract maturation)

  • Type of tracheostomy performed (surgical vs. percutaneous dilational tracheostomy — PDT; PDT tracts may take longer to mature)

  • Presence of infection or wound breakdown

• Documentation requirement: The provider must document the status of the fistula tract in the procedure note. Simply stating “trach tube change” is insufficient. The documentation must explicitly address why the tube change was performed and include a notation that the tract was not yet established (or was immature/early). Without this documentation, the claim for 31502 cannot be substantiated.

• Clinical indicators of an immature tract: Provider documentation should reference one or more of:

  • Postoperative day (e.g., “POD 3,” “POD 7”)

  • Direct assessment of the tract (“tract walls appear mobile and not epithelialized”)

  • Reason for early change (see indications below)

  • Documentation that the change required physician skill and management due to tract immaturity

Clinical Indications for Pre-Fistula Tube Change (31502)

The following clinical scenarios justify an early tracheostomy tube change and support billing CPT 31502:

Tube obstruction/occlusion:

• Inspissated mucus (thick, tenacious secretions) causing partial or complete tube blockage unresponsive to suctioning

• Blood clot within the tube lumen from post-operative bleeding

• Peritubular granulation tissue growing into the tube

• Kinked or compressed tube inner cannula (non-removable inner cannula designs)

Tube displacement or accidental decannulation:

• Partial or complete accidental dislodgement of the tube — an acute emergency when the tract is immature

• Tube found in suboptimal position (e.g., advanced too far distally — cuff positioned in the right mainstem bronchus; or not advanced far enough — tip proximal to the stoma)

• Tube dislodgment during patient turning, transport, agitation, or coughing episodes

Wrong tube size or type:

• Initial tube placed in emergency conditions is an inappropriate size for ongoing management (too large causing mucosal pressure, too small causing air leak)

• Clinical change requiring a different tube type — e.g., transition to a fenestrated tube to initiate weaning, addition of a speaking valve adapter, or transition to a cuffless tube for swallowing therapy

• Downsizing of the tube as part of a decannulation protocol begun early in the post-operative course

• Tube cuff failure (cuff not maintaining seal — air leak on mechanical ventilation, aspiration risk)

Infection or wound complication:

• Tube itself is colonized or infected; tube change as part of infection management

• Peri-stomal skin breakdown requiring a different tube design (skin-plate style, extended length)

• Subcutaneous emphysema requiring tube repositioning evaluation

Mucus plugging with respiratory compromise:

• Tube obstruction causing hypoxia, increased work of breathing, or ventilator alarm triggering

• Tube change required to restore adequate ventilation in a ventilator-dependent patient

Equipment failure:

• Tube cuff defect — cuff will not inflate or deflates spontaneously

• Tube body crack or deformity

• Inner cannula (if applicable) is stuck, damaged, or permanently occluded

Patient Populations Commonly Requiring CPT 31502

ICU/critical care patients:

• The most common setting for 31502; mechanically ventilated patients with tracheostomies placed for prolonged ventilation (respiratory failure, ARDS, neuromuscular disease, spinal cord injury)

• High secretion burden requiring frequent tube management

• Obtunded or agitated patients who are at high risk for accidental decannulation

Trauma surgery:

• Patients who underwent emergency tracheostomy (31603 transtracheal; 31605 cricothyroidotomy converted to trach) for acute airway compromise from trauma

• Neck, face, or oral cavity trauma limiting normal tube management

Head and neck oncology:

• Post-laryngectomy or post-pharyngectomy patients with early post-operative tracheostomy management

• Patients with airway tumors whose tracheostomies were placed for obstruction management

Pediatric patients:

• Neonatal and pediatric tracheostomy requires special expertise in early tube changes due to smaller airway caliber, shorter tracheal length, and less compliant tissue

• Tract maturation takes longer in neonates — the pre-fistula tube change window may extend well beyond 14 days

Percutaneous dilational tracheostomy (PDT) patients:

• PDT creates a stoma by dilating the tracheal opening without formal skin flaps; the resulting tract may be less stable than a surgically created tract

• PDT-specific tube changes in the pre-fistula period require the same physician expertise as surgical tracheostomy changes

Procedure Description

Equipment required:

• Tracheostomy tube of appropriate size, type, and configuration (pre-selected before removal of current tube)

• Tracheostomy obturator for the replacement tube (critical — inserted into the tube during placement to provide a smooth rounded tip; removed immediately after tube is placed)

• Suction equipment and catheter

• Supplemental oxygen source

• Bag-valve-mask for emergency ventilation if tube placement fails

• Light source and visualization equipment (headlight, direct laryngoscope, flexible scope depending on difficulty)

• Sterile gloves, drapes

• Water-soluble lubricant

• Securing ties or commercial tracheostomy holder

• Capnography (ETCO2) for confirmation of placement in ventilated patients

Technique:

1. Patient preparation: Position with neck extended (roll under shoulders in adults) to bring the anterior trachea into an accessible position. Pre-oxygenate via existing tracheostomy or bag-mask as appropriate.

2. Pre-procedure suctioning: Suction through the existing tube to clear secretions and assess the degree of obstruction. Suction the oropharynx to reduce aspiration risk during the exchange.

3. Deflate cuff (if cuffed tube): Deflate the cuff of the existing tube to reduce tracheal mucosal trauma during removal.

4. Rapid tube removal and immediate reinsertion: Remove the existing tube with a smooth, controlled motion. Immediately insert the new tube (loaded with its obturator) in a smooth arc following the curvature of the stoma tract. This must be done rapidly — the immature tract begins to close within seconds.

5. Remove obturator: As soon as the tube tip enters the trachea, remove the obturator immediately to open the tube lumen for ventilation.

6. Confirm placement:

   • Ventilated patient: Confirm ETCO2 waveform, bilateral breath sounds, chest rise

   • Non-ventilated patient: Auscultation, air movement through tube, patient’s respiratory effort

   • Rigid or flexible bronchoscopy if placement is in doubt

7. Inflate cuff (if cuffed): Inflate to minimum occlusive volume or target cuff pressure (20-25 cmH2O).

8. Secure the tube: Apply tracheostomy holder or ties; ensure appropriate depth marking noted.

9. Documentation: Document in the procedure note: indication for tube change, assessment of tract maturity (that the tract was not yet established), tube size and type placed, confirmation method used, post-procedure status.

Visualization aids:

For high-risk early tube changes (obese neck, prior neck surgery, radiation, difficult tracts), providers may perform the exchange over a flexible bronchoscope placed through the existing tube before it is removed — the scope serves as a guide rail for the exchange and allows immediate confirmation of new tube placement. This technique significantly reduces false passage risk.

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Code Hierarchy / Related CPT Code Tree

Respiratory System — Larynx (31500-31599)
  │
  ├── 31500    Intubation, endotracheal, emergency procedure
  │            (Laryngoscopy-guided ET tube — emergency; not a tracheostomy code)
  ├── 31502    Tracheotomy tube change prior to establishment of fistula tract    ◄ THIS CODE
  │            (Early trach tube change — immature, pre-fistula stoma)
  │
  ├── [[31600]]    Tracheostomy, planned (separate procedure); age 2 or older
  ├── [[31601]]    Tracheostomy, planned; younger than 2 years
  ├── [[31603]]    Tracheostomy, emergency procedure; transtracheal
  ├── [[31605]]    Tracheostomy, emergency procedure; cricothyroid membrane
  ├── [[31610]]    Tracheostomy, fenestration procedure with skin flaps
  │            (90-day global period — 31502 during global period not separately billable)
  │
  ├── [[31611]]    Construction of tracheoesophageal fistula and subsequent insertion
  │            of an alaryngeal speech prosthesis
  ├── [[31612]]    Tracheal puncture, percutaneous with transtracheal aspiration/injection
  ├── [[31613]]    Tracheostoma revision; simple, without flap rotation
  ├── [[31614]]    Tracheostoma revision; complex, with flap rotation
  ├── [[31615]]    Tracheobronchoscopy through established tracheostomy incision
  │
  ├── [[31820]]    Surgical closure, tracheostomy or fistula; without plastic repair
  ├── [[31825]]    Surgical closure, tracheostomy or fistula; with plastic repair
  └── [[31830]]    Revision of tracheostomy scar

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Global Period Rules — Critical Billing Considerations

CPT 31502 has a 0-day (000) global period — no pre-operative or post-operative work is included in this code’s reimbursement. Each encounter at which 31502 is performed is separately billable.

However, the global period of the original tracheostomy procedure creates significant billing restrictions:

Global Periods of Tracheostomy Creation Procedures

CPT	Description	Global Period
31600	Tracheostomy, planned, age ≥ 2	000 (zero days)
31601	Tracheostomy, planned, age < 2	000 (zero days)
31603	Tracheostomy, emergency, transtracheal	000 (zero days)
31605	Tracheostomy, emergency, cricothyroid	000 (zero days)
31610	Tracheostomy, fenestration with skin flaps	090 (90 days)

Key billing rule for 31502 during a global period: When the tracheostomy was created using CPT 31610 (the only tracheostomy creation code with a 90-day global period), a tube change (31502) performed within the 90-day global period of that procedure by the same physician or group is not separately billable as a routine post-operative service. If the tube change required a return to the operating room for a related procedure, Modifier -78 (unplanned return to OR) permits separate billing of 31502 during the global period.

Note

For tracheostomies created with 31600, 31601, 31603, or 31605 (all 000 global day procedures), there is no global period restriction — 31502 can be billed independently at subsequent encounters when the pre-fistula criteria are met.

After the Fistula Tract Is Established

Once the fistula tract is mature and well-established:

• CPT 31502 is no longer applicable. There is no separately billable CPT code for routine tube changes in a mature, well-established tracheal stoma.

• Routine tube changes in an established tracheostomy are included in the E/M service for the visit — report the appropriate office visit (99202-99215), hospital care (99221-99233), or other E/M code to capture the provider work.

• The absence of a CPT code for mature trach tube changes is intentional — the tube change itself is not considered a separately reimbursable procedure when the tract is stable.

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HCC (Hierarchical Condition Category) Mapping

CPT 31502 itself does not generate HCC mapping — CPT codes are procedural and do not directly map to HCC risk adjustment. HCC mapping applies to ICD-10-CM diagnosis codes.

However, the diagnosis codes most commonly paired with CPT 31502 provide important risk adjustment context:

Paired ICD-10-CM	Description	HCC Mapping
J95.01	Hemorrhage from tracheostomy stoma	Not HCC mapped
J95.02	Infection of tracheostomy stoma	Not HCC mapped
J95.04	Tracheomalacia, following tracheostomy	Not HCC mapped
J95.09	Other tracheostomy complication	Not HCC mapped
J96.1-	Chronic respiratory failure	HCC 84 — significant RAF weight
J96.0-	Acute respiratory failure	HCC 84
G12.21	Amyotrophic lateral sclerosis	HCC 75
G35	Multiple sclerosis	HCC 77
C32.-	Malignant neoplasm of larynx	HCC 11
C34.-	Malignant neoplasm of bronchus/lung	HCC 9
S14.1-	Cervical spinal cord injury	HCC 70/71

Note

Risk adjustment documentation opportunity: When 31502 is performed on a patient with chronic respiratory failure, spinal cord injury, ALS, or malignancy — the diagnosis codes supporting the need for the tracheostomy and the tube change carry significant HCC weight. Accurate, complete diagnosis coding alongside the procedural code ensures appropriate risk adjustment for these medically complex patients.

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MS-DRG Mapping (Inpatient)

CPT 31502 is primarily performed in the inpatient hospital or ICU setting (or occasionally in the surgical suite for patients too unstable for bedside change). As a physician professional service code, 31502 itself does not directly drive DRG assignment — DRG assignment on the UB-04 is driven by ICD-10-PCS procedure codes and ICD-10-CM diagnosis codes on the facility claim.

ICD-10-PCS Equivalents (Facility/Inpatient Claim)

For inpatient facility billing, the tracheostomy tube change is coded in ICD-10-PCS. The PCS procedure code table for change of tracheostomy device:

ICD-10-PCS	Description
0B21XFZ	Change tracheostomy device in trachea, external approach

Relevant MS-DRGs When 31502 Supports Inpatient Care

The inpatient DRG is driven by the principal diagnosis and any ICD-10-PCS procedures performed, not by the CPT 31502 code itself (which is the professional fee code). The following DRGs are common when CPT 31502 is performed in an inpatient context:

MS-DRG	Description	Context
003	ECMO or Tracheostomy with MV >96 hours or PDX except face, mouth, and neck diagnoses with major OR procedure	Complex ICU patients
004	Tracheostomy with MV >96 hours or PDX except face, mouth, neck without major OR procedure	Long-term vent patients with trach
011	Tracheostomy for Face, Mouth, and Neck Diagnoses or Laryngectomy with MCC	ENT/head and neck patients
012	Tracheostomy for Face, Mouth, and Neck Diagnoses or Laryngectomy with CC	Same, with CC
013	Tracheostomy for Face, Mouth, and Neck Diagnoses or Laryngectomy without CC/MCC	Same, no CC/MCC
207	Respiratory System Diagnosis with Ventilator Support >96 Hours	Prolonged vent patients
208	Respiratory System Diagnosis with Ventilator Support ≤96 Hours	Shorter vent duration

Note

MDC: MDC 03 (Ear, Nose, Mouth, and Throat) when primary diagnosis is a head/neck condition; MDC 04 (Respiratory System) when primary diagnosis is respiratory; MDC Pre-MDC 003/004 for complex tracheostomy/MV patients that group before MDC assignment.

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ICD-10-CM Diagnosis Codes Commonly Paired With CPT 31502

Accurate diagnosis coding is essential for medical necessity documentation with CPT 31502. The primary diagnosis should reflect the reason the tube change was needed, with additional codes for the tracheostomy status and underlying condition.

Primary Diagnoses (Reason for Tube Change)

ICD-10-CM	Description	Clinical Context
J95.00	Unspecified tracheostomy complication	General complication when not further specified
J95.01	Hemorrhage from tracheostomy stoma	Blood in/around stoma requiring tube change
J95.02	Infection of tracheostomy stoma	Peri-stomal infection driving tube change
J95.03	Malfunction of tracheostomy stoma	General tracheostomy malfunction
J95.04	Tracheomalacia following tracheostomy	Tracheomalacic complication
J95.09	Other tracheostomy complication	Tube obstruction, displacement, other
J98.09	Diseases of trachea and bronchus; obstruction NEC	Airway obstruction driving tube change
T17.800A	Foreign body in trachea causing asphyxiation, initial	Mucus plug/foreign material obstruction
T17.808A	Foreign body in trachea causing other injury, initial	Obstruction of tube from foreign material
J96.00	Acute respiratory failure, unspecified	Respiratory failure driving urgent tube change
J96.10	Chronic respiratory failure, unspecified	Underlying condition requiring tracheostomy

Tracheostomy Status (Always Code as Additional)

ICD-10-CM	Description	Notes
Z93.0	Tracheostomy status	Status code — documents the patient has a tracheostomy; always add as secondary code
Z43.0	Encounter for attention to tracheostomy	When the encounter purpose is management of the tracheostomy

Z93.0 vs Z43.0 distinction: Z93.0 is a status code — it documents that the tracheostomy exists and is relevant to the patient’s clinical context. Z43.0 is an encounter code — it designates that the purpose of the encounter is attention to (management of) the tracheostomy. Use Z43.0 as the first-listed code when the encounter is specifically for tracheostomy care; use Z93.0 as an additional code when the tracheostomy is relevant context. Per the Z93.0 Excludes1 note: when a complication is present (J95.-), use the complication code, not Z93.0 — artificial openings requiring attention are coded with Z43.0.

Underlying Conditions (Additional Codes)

ICD-10-CM	Description	HCC
J96.11	Chronic respiratory failure with hypoxia	HCC 84
J96.12	Chronic respiratory failure with hypercapnia	HCC 84
G12.21	ALS	HCC 75
C32.0	Malignant neoplasm of glottis	HCC 11
C34.11	Malignant neoplasm of upper lobe, right lung	HCC 9
G35	Multiple sclerosis	HCC 77
S14.105A	Unspecified injury of cervical spinal cord at C1 level	HCC 70
J68.0	Aspiration pneumonitis	Not HCC mapped
J69.0	Aspiration pneumonia	Not HCC mapped

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CPT Procedure Code Relationships

Procedures That Precede 31502 (Original Tracheostomy Creation)

CPT	Description	wRVU	Global Period	Notes
31600	Tracheostomy, planned; age ≥ 2	~7.69	000	Most common planned trach; no global restriction on 31502
31601	Tracheostomy, planned; age < 2	~11.56	000	Pediatric planned trach; 31502 can follow without global restriction
31603	Tracheostomy, emergency; transtracheal	~9.97	000	Emergency surgical trach; 31502 can follow without global restriction
31605	Tracheostomy, emergency; cricothyroid membrane	~8.24	000	Emergency cricothyrotomy; 31502 can follow without global restriction
31610	Tracheostomy, fenestration with skin flaps	~9.62	090	31502 within global requires Modifier -78 if return to OR

Procedures Associated with 31502 Encounters

CPT	Description	wRVU	Assistant Allowed?	Notes
31502	Tracheotomy tube change, pre-fistula	~1.30	No	The primary procedure — this note
31615	Tracheobronchoscopy through established tracheostomy	~4.03	No	If scope passed through stoma to evaluate airway at time of tube change
31622	Bronchoscopy, diagnostic, flexible, with/without bronchial washing	~3.50	No	If flexible scope used to confirm placement or evaluate lower airway
31500	Intubation, endotracheal, emergency	~3.62	No	If trach tube change fails and emergency orotracheal intubation is required
31603	Tracheostomy, emergency, transtracheal	~9.97	No	If airway is lost during tube change and surgical re-establishment is required

Procedures That Follow 31502 (Subsequent Tracheostomy Management)

CPT	Description	wRVU	Notes
31613	Tracheostoma revision, simple, without flap rotation	~10.28	For stoma complications requiring surgical revision
31614	Tracheostoma revision, complex, with flap rotation	~14.33	Complex stoma revision
31820	Surgical closure, tracheostomy/fistula; without plastic repair	~6.17	Tracheostomy closure when no longer needed
31825	Surgical closure, tracheostomy/fistula; with plastic repair	~10.67	Closure with plastic surgical reconstruction
31830	Revision of tracheostomy scar	~6.83	Scar revision post-closure

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Billing and Modifier Guidance

Modifier -78 — Unplanned Return to OR Within Global Period

As discussed, if the original tracheostomy was created with CPT 31610 (90-day global), any tube change requiring a return to the operating room within the 90-day global period must use Modifier -78.

• Modifier -78 reduces payment to the intraoperative component of 31502 only (~70% of total allowed amount)

• Document the reason the tube change required OR-level care rather than bedside management

Modifier -25 — Significant, Separately Identifiable E/M Service

When 31502 is performed at the same encounter as an E/M service:

• If the E/M service is significant and separately identifiable (e.g., a comprehensive critical care assessment performed in addition to the tube change, addressing medical decision-making beyond the tube change itself), the E/M service can be separately reported with Modifier -25

• The E/M service and 31502 must represent distinct clinical work documented in separate sections of the note

• If the E/M service is exclusively for assessment and management of the tracheostomy issue that necessitated the tube change, it is typically included in 31502 and not separately billable

Modifier -59 / X{EPSU} — Distinct Procedural Service

If 31502 is reported alongside another procedure that payers or NCCI edits might bundle:

• Modifier -59 (or the more specific X-modifiers) establishes that 31502 is a distinct service from the other procedure

• Most commonly applicable when 31502 is reported alongside bronchoscopy (31615) at the same session — document clinical necessity for each procedure separately

Site of Service Considerations

Site	Billing Implications
Inpatient Hospital (POS 21)	Report 31502 on the CMS-1500 (professional claim); hospital bills the facility fee separately on the UB-04 with ICD-10-PCS codes
ASC	31502 is payable in the ASC setting when performed at that level of care
Office / Clinic (POS 11)	Rarely — only if the tube change occurs in an outpatient clinic and the provider is qualified; supply costs may be billable separately
Emergency Department	Billable; coordinate with facility billing team
Skilled Nursing Facility (SNF)	Per Part B professional billing rules; Part A consolidated billing restrictions may apply
Home / HBPC	The HBPC (Home-Based Primary Care) program has addressed 31502 as potentially billable when a provider performs a pre-fistula tube change in the home setting — document extensively

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Coding Examples

Example 1 — Tube Obstruction, ICU Patient, POD 4

Clinical Scenario:
A 58-year-old male in the surgical ICU underwent elective tracheostomy (CPT 31600) 4 days ago for prolonged ventilator weaning following ARDS. On post-operative day 4, the respiratory therapist notes increasing peak airway pressures and difficulty passing a suction catheter. The intensivist evaluates the patient and finds the tracheostomy tube is partially obstructed with inspissated secretions that cannot be cleared by suctioning. The physician documents “tracheostomy tube obstruction, fistula tract not yet established, post-operative day 4; physician-performed tracheostomy tube change required.” The tube is exchanged at the bedside by the intensivist.

ICD-10-CM:

• J95.09 — Other tracheostomy complication (tube obstruction — primary reason for tube change)

• Z93.0 — Tracheostomy status (additional — documents tracheostomy status)

• J96.11 — Chronic respiratory failure with hypoxia (underlying condition — additional; HCC 84)

CPT:

• 31502 — Tracheotomy tube change prior to establishment of fistula tract

Global period note: Original tracheostomy was CPT 31600 (000 global days). There is no global period restriction — 31502 is fully billable.

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Example 2 — Accidental Decannulation, Emergency Tube Replacement, POD 6

Clinical Scenario:
A 72-year-old female with laryngeal cancer underwent tracheostomy (CPT 31600) 6 days ago. During repositioning by nursing staff, the tracheostomy tube is accidentally dislodged (decannulated). The ENT surgeon is called urgently. The patient is in mild respiratory distress. The surgeon documents “accidental decannulation on post-operative day 6; tracheal stoma is immature, fistula tract not established; requires urgent physician-managed tracheostomy tube replacement due to risk of stoma closure.” The surgeon replaces the tube under direct visualization using a headlight and tracheal dilators. ETCO2 confirms correct placement.

ICD-10-CM:

• J95.03 — Malfunction of tracheostomy stoma (accidental displacement/decannulation)

• Z93.0 — Tracheostomy status (additional)

• C32.0 — Malignant neoplasm of glottis (underlying laryngeal cancer — additional; HCC 11)

CPT:

• 31502 — Tracheotomy tube change prior to establishment of fistula tract

Tip

Documentation tip: Note the urgency and physician skill required — “risk of stoma closure,” “required direct visualization,” and “physician-managed” language strengthens medical necessity for the separate procedure code.

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Example 3 — Tube Downsizing for Decannulation Trial, POD 10

Clinical Scenario:
A 44-year-old male sustained a traumatic brain injury and underwent emergent tracheostomy (CPT 31603) 10 days ago. He is beginning a decannulation trial per the speech-language pathology team. The attending pulmonologist changes the current #8 cuffed Shiley to a #6 cuffless, fenestrated tube to facilitate speaking valve trials and weaning. The provider documents “tracheostomy tube downsizing, post-operative day 10, to initiate decannulation protocol; fistula tract assessed as not yet fully established given patient’s catabolic nutritional state and ongoing steroid therapy.” The change is performed at the bedside.

ICD-10-CM:

• J95.09 — Other tracheostomy complication (tracheostomy management requiring tube change as part of clinical progression plan)

• Z43.0 — Encounter for attention to tracheostomy (encounter for tracheostomy management — may use as first-listed for this type of planned management visit)

• Z93.0 — Tracheostomy status (additional)

• S09.90XD — Unspecified injury of head, subsequent encounter (traumatic brain injury status — additional)

CPT:

• 31502 — Tracheotomy tube change prior to establishment of fistula tract

Nuance: Some payers may scrutinize 31502 for a “planned” downsizing — documentation of the fistula tract being not yet established, with specific clinical rationale (malnutrition, steroids, assessment of tract walls), is essential to support medical necessity. The provider must specifically document the immature fistula status.

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Example 4 — Tube Change With 31610 Global Period — Modifier -78

Clinical Scenario:
A 65-year-old male underwent tracheostomy with skin flaps (CPT 31610) 12 days ago for a planned permanent tracheostomy following laryngopharyngectomy. On post-operative day 12, his tube is found to be cracked at the connector. He is taken to the operating room for tube exchange due to the clinical instability of the stoma in this post-laryngectomy patient (altered neck anatomy, post-radiation tissue). The surgeon documents “tracheostomy tube change on POD 12; tract not fully epithelialized given radiation-compromised tissue and recent laryngopharyngectomy; physician procedure required.”

ICD-10-CM:

• J95.09 — Other tracheostomy complication (tube equipment failure)

• Z93.0 — Tracheostomy status

• C13.9 — Malignant neoplasm of hypopharynx (underlying — additional)

CPT:

• 31502-78 — Tracheotomy tube change prior to establishment of fistula tract, with Modifier -78 (unplanned return to OR within 90-day global period of CPT 31610)

Modifier -78 is mandatory here. CPT 31610 has a 90-day global period. The tube change on POD 12 falls within this global period. Since the change required a return to the OR (not just a bedside change), Modifier -78 permits separate billing — but reimbursement is reduced to the intraoperative component only.

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Example 5 — Tube Change After Established Fistula — 31502 NOT Appropriate

Clinical Scenario:
A 60-year-old male with a permanent tracheostomy (placed 6 months ago) presents to the ENT clinic for a scheduled quarterly tube change. His #8 Shiley is exchanged for a new #8 Shiley without difficulty. The stoma is well-healed, skin-lined, and the tube exchanges easily. The provider does NOT document any complication or tract immaturity.

ICD-10-CM:

• Z43.0 — Encounter for attention to tracheostomy (first-listed — the purpose of the visit)

• Z93.0 — Tracheostomy status (additional)

CPT:

• 31502 is NOT appropriate — the fistula tract is well-established (6 months post-procedure). The tube change is not separately billable.

• 99213 or 99214 — Office visit, established patient (appropriate E/M code for the visit; the tube change is included in this service)

Critical pitfall avoided: Billing 31502 for an established tracheostomy tube change is a common overpayment error and a known CMS audit target. If 31502 is submitted for a mature-stoma tube change, it represents improper billing that can generate audit findings, overpayment demands, and compliance issues.

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Example 6 — Bronchoscopy Performed at Time of Tube Change

Clinical Scenario:
A 50-year-old female on prolonged ventilation in the ICU has a tracheostomy tube change on POD 8. At the time of the change, the pulmonologist also performs flexible bronchoscopy through the new tracheostomy to evaluate the distal trachea and mainstem bronchi for mucus plugging and to assess tube position and distal airway anatomy. Two separate clinical services are performed and documented.

ICD-10-CM:

• J95.09 — Other tracheostomy complication (tube change indication)

• J98.09 — Other diseases of trachea and bronchus (lower airway assessment indication for bronchoscopy)

• Z93.0 — Tracheostomy status

CPT:

• 31502 — Tracheotomy tube change prior to establishment of fistula tract

• 31615 — Tracheobronchoscopy through established tracheostomy incision (bronchoscopy through the new tube; this is separately reportable if clinically indicated and documented; verify NCCI edit pairing and Modifier -59 if bundled)

Separate documentation required: Each procedure must be individually documented with its own indication, findings, and clinical rationale. Bundling 31615 with 31502 without documented separate indications is an NCCI compliance issue.

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Key Coding Pitfalls & Tips

• Never report 31502 for an established-stoma tube change. This is the single most common error with this code. If the tracheostomy is greater than ~14 days old in an average healing patient, and the provider has not documented that the tract remains immature, 31502 is not appropriate. Routine maintenance tube changes in a mature stoma are included in the E/M service.

• Provider documentation of fistula tract status is mandatory. The procedure note must specifically address: (a) that the tube change was performed before the fistula tract was established; (b) the clinical reason for the early change; and (c) the post-operative day or timeframe. “Trach tube change” without fistula tract documentation is insufficient to support 31502.

• 31502 has a zero-day global period — but watch the original procedure’s global. 31502 itself has no global period restriction. However, if the original tracheostomy (particularly 31610) is within its global period, Modifier -78 is required when returning to the OR for the tube change.

• After an established fistula, tube changes are included in E/M. Code the visit with the appropriate E/M code (office visit, hospital care, SNF visit). The tube change is included — there is no CPT code to additionally report for mature-stoma tube changes.

• ICD-10-CM must reflect the specific reason for the tube change. J95.09 (other tracheostomy complication) is a catch-all; when possible, use J95.01 (hemorrhage), J95.02 (infection), J95.03 (malfunction), or the most specific code matching the documented clinical indication.

• Z93.0 is typically appropriate as an additional code. Always add Z93.0 (tracheostomy status) as a secondary code to confirm the patient has an established tracheostomy and contextualize the tube change.

• Z93.0 Excludes1 note: Z93.0 has an Excludes1 note that complications of external stoma (J95.0-) should not be coded with Z93.0. When J95.0- codes are used as the primary diagnosis (tracheostomy complication), Z43.0 is the more appropriate additional code rather than Z93.0.

• Pediatric tracheostomy tube changes require special documentation. Pediatric patients (especially neonates) have a much longer fistula tract maturation time. Document the specific clinical factors supporting continued classification as “pre-fistula” in pediatric patients being managed beyond the typical 14-day adult window.

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Related Codes (Cross-Reference)

Code	Type	Description
31500	CPT	Endotracheal intubation, emergency procedure
31600	CPT	Tracheostomy, planned; age ≥ 2 (000 global)
31601	CPT	Tracheostomy, planned; age < 2 (000 global)
31603	CPT	Tracheostomy, emergency, transtracheal (000 global)
31605	CPT	Tracheostomy, emergency, cricothyroid membrane (000 global)
31610	CPT	Tracheostomy, fenestration with skin flaps (090 global)
31613	CPT	Tracheostoma revision, simple
31614	CPT	Tracheostoma revision, complex
31615	CPT	Tracheobronchoscopy through tracheostomy
31820	CPT	Surgical closure of tracheostomy, without plastic repair
31825	CPT	Surgical closure of tracheostomy, with plastic repair
31830	CPT	Revision of tracheostomy scar
J95.00	ICD-10-CM	Unspecified tracheostomy complication
J95.01	ICD-10-CM	Hemorrhage from tracheostomy stoma
J95.02	ICD-10-CM	Infection of tracheostomy stoma
J95.03	ICD-10-CM	Malfunction of tracheostomy stoma
J95.04	ICD-10-CM	Tracheomalacia following tracheostomy
J95.09	ICD-10-CM	Other tracheostomy complication
Z43.0	ICD-10-CM	Encounter for attention to tracheostomy
Z93.0	ICD-10-CM	Tracheostomy status
J96.00	ICD-10-CM	Acute respiratory failure, unspecified (HCC 84)
J96.11	ICD-10-CM	Chronic respiratory failure with hypoxia (HCC 84)
0B21XFZ	ICD-10-PCS	Change tracheostomy device in trachea, external approach (facility claim)

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Last Reviewed: 2026-02-18 | Source: AMA CPT Professional Edition 2025, CMS MPFS 2025, CMS MS-DRG v42.0, AAPC Otolaryngology Coding Alert, CMS MLN Global Surgery Booklet (MLN907166), CMS NCCI Policy Manual, AAPC General Surgery Coding Alert, ICD-10-CM FY2025