J38.5

🧬 ICD-10 CM J38.5 — Laryngospasm

Billable Code Confirmed

ICD-10 CM J38.5 is a valid, billable 5-character ICD-10-CM code for FY2025. The code fully specifies the condition (J38 category + .5 laryngospasm). No laterality or additional specificity characters are required.

Non-Billable Parent Codes — Never Submit These

❌ J38 — 3-character header — missing specific laryngeal condition ❌ J38.0 through J38.4 — Other laryngeal/vocal cord pathologies (e.g., paralysis, polyps, nodules, edema) Always submit J38.5 when laryngospasm is explicitly documented in the medical record.

Clinical Context: Etiology & Acute Management

ICD-10 CM J38.5 classifies sudden, involuntary adduction of the true and false vocal cords, resulting in partial or complete glottic closure. It is a reflexive response mediated by the superior laryngeal nerve and is frequently triggered by airway instrumentation, secretions, blood, gastric reflux, or light planes of anesthesia during induction/emergence. Management ranges from conservative maneuvers (jaw thrust, positive pressure ventilation, Larson’s maneuver) to pharmacologic intervention (succinylcholine, propofol) or emergency surgical airway establishment in refractory cases.

🔍 Code Description

ICD-10 CM J38.5 classifies acute laryngospasm, a sudden, reflexive closure of the vocal folds that obstructs airflow and often presents with stridor, suprasternal retractions, hypoxemia, and inability to ventilate. Because the glottis is a midline structure, laterality does not apply. The condition is typically acute and self-limiting once the trigger is removed or treated, but can rapidly progress to life-threatening airway compromise.

Common risk factors & triggers:

• Recent extubation or endotracheal intubation
• Upper respiratory infections or reactive airway disease
• Gastroesophageal reflux (GERD) or microaspiration
• Pediatric patients (higher vagal tone, narrower subglottic diameter)
• Direct laryngeal stimulation during bronchoscopy or surgery

Note

Laryngospasm is considered an acute airway emergency. Prompt recognition, removal of irritants, positive pressure ventilation, and timely pharmacologic or surgical intervention are critical to prevent negative pressure pulmonary edema, severe hypoxemia, or cardiac arrest.

🌳 Code Tree / Hierarchy

J38 Diseases of larynx and vocal cords 
│  
├── J38.0 Paralysis of vocal cords and larynx 
├── J38.1 Polyp of vocal cord and larynx 
├── J38.2 Nodules of vocal cords 
├── J38.3 Other diseases of vocal cords 
├── J38.4 Edema of larynx 
├── J38.5 LARYNGOSPASM ◀ THIS CODE ✅ 
├── J38.6 Stenosis of larynx 
├── J38.7 Other diseases of larynx 
└── J38.9 Disease of larynx, unspecified

✅ Includes

The following clinical scenarios and terms map to J38.5 when documented:

• Glottic spasm
• Vocal cord spasm
• Laryngeal spasm
• Post-extubation laryngospasm
• Reflex laryngospasm
• Anesthesia-related laryngospasm

❌ Excludes

Excludes1 — Cannot be coded together

The Excludes1 note dictates that the following conditions represent distinct pathophysiologic entities and should not be coded alongside J38.5 unless explicitly documented as separate, unrelated conditions:

• Spasmodic croup / Laryngotracheobronchitis (J05.0, J05.1) — Inflammatory/infectious etiology - Foreign body in larynx causing mechanical obstruction (T17 series — requires 7th character)

Excludes2 — Can be coded together if both are present

• Gastroesophageal reflux disease with laryngospasm (K21.0)
• Asthma exacerbation triggering reflex bronchospasm/laryngospasm (J45.901, J45.902)
• Complications of anesthesia (T88.59) with external cause codes (Y84 series)

🛠️ CPT Procedural Crosswalk — wRVU & Assistant Payable Status

Management of acute laryngospasm ranges from emergency airway interventions to critical care and diagnostic endoscopy. Below are the most common procedural CPT codes paired with J38.5.

CPT Code	Description	wRVU (Facility)	Asst. Surgeon Payable?	Co-Surgeon Payable?
31500	Intubation, endotracheal, emergency procedure	2.52	Yes (Indicator 2) — Justification required	No (Indicator 0)
31605	Cricothyrotomy, including subsequent care	12.45	Yes (Indicator 2)	No (Indicator 0)
31525	Laryngoscopy, direct; diagnostic (separate procedure)	2.11	No (Indicator 0)	No (Indicator 0)
94640	Pressurized and/or nonpressurized inhalation treatment for acute airway obstruction	0.43	No (Indicator 0)	No (Indicator 0)
99291	Critical care, evaluation and management of the critically ill or injured patient; first 30-74 minutes	4.45	No (Indicator 0)	No (Indicator 0)

Note: wRVU values are estimates based on the standard CMS Physician Fee Schedule. Verify current year exact values prior to billing.

💊 Coding Scenarios

Scenario 1 — Post-Extubation Laryngospasm in PACU

Clinical Vignette: A 42-year-old female emerges from general anesthesia following laparoscopic cholecystectomy. Within minutes of extubation, she develops severe inspiratory stridor, suprasternal retractions, and SpO2 drops to 74%. Anesthesia provider performs Larson’s maneuver, applies continuous positive airway pressure (CPAP), and administers IV propofol. Spasm resolves, patient is transferred to PACU for close monitoring.

CPT / HCPCS: 99291 — Critical care management (airway compromise requiring constant physician attention, >30 mins cumulative) 94640-59 — Nebulized bronchodilator/epinephrine administration (if distinct from E/M bundle per payer policy)

ICD-10-CM: J38.5 — Laryngospasm (Primary acute event) T88.59x — Other complications of anesthesia (If documented as procedure-related) R09.02 — Hypoxemia (Captures physiological severity)

Scenario 2 — Pediatric URI-Triggered Laryngospasm in ED

Clinical Vignette: A 5-year-old presents to the ED with acute stridor, barking cough, and respiratory distress. Exam reveals episodic glottic closure triggered by secretions. Treated with racemic epinephrine nebulizer, IV dexamethasone, and humidified oxygen. Spasms resolve, patient admitted for 23-hour observation.

CPT / HCPCS: 99284 — Emergency department visit, moderate to high complexity 94640-59 — Nebulizer treatment (racemic epinephrine)

ICD-10-CM: J38.5 — Laryngospasm J06.9 — Acute upper respiratory infection, unspecified (Underlying trigger) R06.1 — Stridor

Scenario 3 — Refractory Laryngospasm Requiring Surgical Airway

Clinical Vignette: Patient develops severe, refractory laryngospasm during induction for emergency laparotomy. Positive pressure ventilation and succinylcholine fail. Otolaryngology is emergently consulted and performs a bedside cricothyrotomy to secure the airway.

CPT / HCPCS: 31605 — Cricothyrotomy, including subsequent care 99291 + 99292 — Critical care (if time/complexity exceeds standard global period)

ICD-10-CM: J38.5 — Laryngospasm J96.00 — Acute respiratory failure, unspecified whether with hypoxia or hypercapnia (Result of prolonged spasm)

⚠️ Coding Pitfalls and Tips

	Pitfall or Tip
❌	Do not code J38.5 for spasmodic croup or infectious laryngitis: Conditions like spasmodic croup (J05.0) or acute laryngotracheobronchitis (J05.1) have distinct infectious/inflammatory etiologies. Code the specific infectious diagnosis instead of laryngospasm.
❌	Do not default to J38.9: If the provider explicitly documents “spasm,” “glottic closure,” or “laryngospasm,” do not default to the unspecified code J38.9.
✅	Link to acute respiratory failure when appropriate: If prolonged laryngospasm results in documented hypoxemia, hypercapnia, or need for mechanical ventilation, capture J96.00, J96.01, or J96.02 to accurately reflect severity and DRG weighting.
✅	Use modifier 59 or X{EPSU} for distinct procedural services: When nebulizer treatments (94640) or emergency intubation (31500) are performed alongside critical care or E/M visits, append appropriate distinct procedural modifiers per payer guidelines to avoid bundling denials.
✅	Capture external causes for anesthesia-related events: If laryngospasm occurs during a surgical/anesthesia encounter, consider adding external cause codes (Y84 series) and complication codes (T88.59-) if the payer requires tracking of procedural adverse events.

📚 Sources

- CMS/NCHS. ICD-10-CM Official Guidelines for Coding and Reporting, FY2025. Tabular List — J38.5 Laryngospasm. - American Medical Association (AMA). CPT 2024/2025 Professional Edition. Emergency airway management, laryngoscopy, and critical care codes. - American Society of Anesthesiologists (ASA). Difficult Airway Algorithm & Management of Laryngospasm. - American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS). Clinical practice guidelines on acute airway obstruction and stridor.