ICD-10-CM 2027
ICD-10 code for allergic pneumonia
Other pulmonary eosinophilia, not elsewhere classified
From the official ICD-10-CM alphabetic index entry “Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › allergic”. Page updated September 29, 2026.
About coding allergic pneumonia
The ICD-10-CM code for allergic pneumonia is J82.89 (Other pulmonary eosinophilia, not elsewhere classified).
Within J82.8, choose J82.89 (Other pulmonary eosinophilia, not elsewhere classified) only when documentation doesn't support a more specific option: chronic eosinophilic pneumonia (J82.81), acute eosinophilic pneumonia (J82.82) and eosinophilic asthma (J82.83).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 196 (Interstitial Lung Disease with MCC, relative weight 1.8336), DRG 197 (Interstitial Lung Disease with CC, relative weight 0.9492) and DRG 198 (Interstitial Lung Disease without CC/MCC, relative weight 0.7259), in MDC 04 (Diseases and Disorders of the Respiratory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about allergic pneumonia ICD-10 codes
What is the ICD-10 code for allergic pneumonia?
- J82.89 — Other pulmonary eosinophilia, not elsewhere classified.
Is J82.89 billable?
- Yes. J82.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J82.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J82.89 as a principal diagnosis.
Is J82.89 a CC or MCC?
- J82.89 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.