491.20
Obstructive chronic bronchitis without exacerbation
The ICD-9 code for obstructive chronic bronchitis without exacerbation is 491.20.
Legacy code — retired October 1, 2015ICD-10-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents.
View ICD-9 → ICD-10 crosswalk for 491.20 →