J45.990
BillableExercise induced bronchospasm
HCC Category Mapping
RxHCCHCC 229 — COPD and Chronic Bronchitis
0.000What This Code Means
Asthma triggered specifically by exercise or physical exertion, causing airway narrowing during or after activity.
Coding Tips
- •Document the clear relationship between exercise and asthma symptoms to support this diagnosis
- •This code may be used with other asthma codes if the patient has both exercise-induced and persistent asthma
Clinical Significance
Exercise-induced bronchospasm is a distinct form of asthma where airway narrowing occurs specifically during or after physical exertion. It can occur as an isolated condition in otherwise healthy individuals or as a component of underlying asthma. Its clinical significance for risk adjustment is limited as it does not map to CMS-HCC models.
Documentation Requirements
- ✓Provider documentation specifically stating exercise-induced bronchospasm or exercise-induced asthma
- ✓Description of symptoms related to exercise: wheeze, cough, chest tightness, dyspnea during or after exertion
- ✓Exercise challenge testing or objective evidence if available
- ✓Pre-exercise bronchodilator treatment plan
- ✓Assessment of whether underlying persistent asthma is also present (which would require additional coding)
Commonly Confused Codes
J45.20 — Mild intermittent asthma: use when asthma symptoms occur at rest as well, not just with exerciseJ45.909 — Unspecified asthma: less specific; use J45.990 when exercise is the documented triggerJ45.998 — Other asthma: use for other specified asthma types that are not exercise-inducedR06.2 — Wheezing: a symptom code, not a diagnosis; use J45.990 when exercise-induced bronchospasm is diagnosed
Code Hierarchy
└J45Asthma└J45.9Other and unspecified asthma└J45.99Other asthma└J45.990Exercise induced bronchospasm
└J45.990Exercise induced bronchospasm