491.21 - Obstructive Chronic Bronchitis With (acute) Exacerbation
The ICD 9 Code for Obstructive chronic bronchitis with (acute) exacerbation is listed as 491.21.
Additional information concerning this code and description can be found below including ICD 10 crosswalks / GEMS, and chapter information where available.
| ICD 9 CM Field | Value |
|---|---|
| Diagnosis Code: | 491.21 |
| Long Description: | Obstructive chronic bronchitis with (acute) exacerbation |
| Short Description: | Obs chr bronc w(ac) exac |
| Chapter: | Diseases Of The Respiratory System |
| Block: | Chronic Obstructive Pulmonary Disease And Allied Conditions (490-496) |
| ICD-10-CM Diagnosis Codes General Equivalence Mappings (GEMS): | |
| ICD-10-CM Code: | J44.1 - Chronic obstructive pulmonary disease with (acute) exacerbation (approximate) |
| ICD-9-CM Siblings (same level / similar specificity) of 491.21: | |
| 491.20 - Obstructive chronic bronchitis without exacerbation | |
| 491.22 - Obstructive chronic bronchitis with acute bronchitis | |