ICD10BillableValid for clinical use
ICD-10 Code J68.3: Other acute and subacute respiratory conditions due to chemicals, gases, fumes and vapors
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the respiratory system (J00-J99).
When is it used?
- May be used when a clinician documents other acute and subacute respiratory conditions due to chemicals, gases, fumes and vapors in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
10Diseases of the respiratory system (J00-J99)
block
J60-J70Lung diseases due to external agents
category
J68Respiratory conditions due to inhalation of chemicals, gases, fumes and vapors
currentJ68
Official coding notes
Inclusion terms
- Reactive airways dysfunction syndrome
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
PulmonologistGeneral Physician
Related codes
J68.0Bronchitis and pneumonitis due to chemicals, gases, fumes and vaporscodeJ68.1Pulmonary edema due to chemicals, gases, fumes and vaporscodeJ68.2Upper respiratory inflammation due to chemicals, gases, fumes and vapors, not elsewhere classifiedcodeJ68.4Chronic respiratory conditions due to chemicals, gases, fumes and vaporscodeJ68.8Other respiratory conditions due to chemicals, gases, fumes and vaporscodeJ68.9Unspecified respiratory condition due to chemicals, gases, fumes and vaporscode
Sibling codes
J68.0Bronchitis and pneumonitis due to chemicals, gases, fumes and vaporsbillableJ68.1Pulmonary edema due to chemicals, gases, fumes and vaporsbillableJ68.2Upper respiratory inflammation due to chemicals, gases, fumes and vapors, not elsewhere classifiedbillableJ68.4Chronic respiratory conditions due to chemicals, gases, fumes and vaporsbillableJ68.8Other respiratory conditions due to chemicals, gases, fumes and vaporsbillableJ68.9Unspecified respiratory condition due to chemicals, gases, fumes and vaporsbillable
Coverage-related procedures and services
CPT 94642high
AEROSOL INHALATION OF PENTAMIDINE FOR PNEUMOCYSTIS CARINII PNEUMONIA TREATMENT OR PROPHYLAXIS
Source: CMS coverage guidance
CPT 94728high
AIRWAY RESISTANCE BY OSCILLOMETRY
Source: CMS coverage guidance
CPT 94450high
BREATHING RESPONSE TO HYPOXIA (HYPOXIA RESPONSE CURVE)
Source: CMS coverage guidance
CPT 94060high
BRONCHODILATION RESPONSIVENESS, SPIROMETRY AS IN 94010, PRE- AND POST-BRONCHODILATOR ADMINISTRATION
Source: CMS coverage guidance
CPT 94070high
BRONCHOSPASM PROVOCATION EVALUATION, MULTIPLE SPIROMETRIC DETERMINATIONS AS IN 94010, WITH ADMINISTERED AGENTS (EG, ANTIGEN[S], COLD AIR, METHACHOLINE)
Source: CMS coverage guidance
CPT 94621high
CARDIOPULMONARY EXERCISE TESTING, INCLUDING MEASUREMENTS OF MINUTE VENTILATION, CO2 PRODUCTION, O2 UPTAKE, AND ELECTROCARDIOGRAPHIC RECORDINGS
Source: CMS coverage guidance
Mapped diagnoses and classifications
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
J68.3
Common synonyms
Other acute and subacute respiratory conditions due to chemicals, gases, fumes and vapors
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.