J68.4
BillableChronic respiratory conditions due to chemicals, gases, fumes and vapors
HCC Category Mapping
V28HCC 280 — Chronic Obstructive Pulmonary Disease
0.334V24HCC 112 — Fibrosis of Lung and Other Chronic Lung Disorders
0.268ESRDHCC 112 — Fibrosis of Lung and Other Chronic Lung Disorders
0.000What This Code Means
Long-term lung disease caused by repeated or prolonged exposure to chemicals, gases, fumes, or vapors, typically from occupational settings.
Coding Tips
- •This code indicates chronic/long-standing condition, so document duration of exposure and symptoms
- •Consider occupational history and whether this is work-related for proper coding and potential workers' compensation claims
Clinical Significance
Chronic respiratory conditions from chemical exposure represent the long-term sequelae of toxic inhalation, including obliterative bronchiolitis, chronic chemical bronchitis, and chemical-induced pulmonary fibrosis. This code is highly relevant for risk adjustment because it captures ongoing, irreversible lung disease requiring continuous medical management.
Documentation Requirements
- ✓Documentation of chronic respiratory disease with established chemical causation
- ✓Identification of the specific chemical, gas, fume, or vapor responsible
- ✓Duration of exposure and symptom timeline establishing chronicity
- ✓Pulmonary function test results showing chronic impairment
- ✓Chest imaging documenting chronic changes
- ✓Occupational history linking the condition to workplace exposure
- ✓Current treatment plan and functional limitations
Excludes 1 — Do NOT code together
- chronic pulmonary edema due to chemicals, gases, fumes and vapors (J68.1)
Code Also
Commonly Confused Codes
J68.0-J68.3 (Acute chemical respiratory conditions) — these are acute, while J68.4 is chronicJ44.1 (Chronic obstructive pulmonary disease with acute exacerbation) — idiopathic COPD vs. chemical-induced chronic diseaseJ84.10 (Pulmonary fibrosis, unspecified) — when chemical exposure causes fibrosis, use J68.4 to capture the etiologyJ68.8 (Other respiratory conditions due to chemicals) — J68.4 specifically captures the chronic nature
Code Hierarchy
└J68Respiratory conditions due to inhalation of chemicals, gases, fumes and vapors└J68.4Chronic respiratory conditions due to chemicals, gases, fumes and vapors
└J68.4Chronic respiratory conditions due to chemicals, gases, fumes and vapors