2014 ICD-9-CM Diagnosis Code 491
Chronic bronchitis
- There are 5 ICD-9-CM codes below 491 that define this diagnosis in greater detail. Do not use this code on a reimbursement claim.
- You are viewing the 2014 version of ICD-9-CM 491.
- More recent version(s) of ICD-9-CM 491: 2015.
491 Excludes
- chronic obstructive asthma (493.2)