ICD-10 code for eosinophilic pneumonitis

The ICD-10-CM code for eosinophilic pneumonitis is J82.81 (Chronic eosinophilic pneumonia). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J82.81.

Within J82.8 (pulmonary eosinophilia, not elsewhere classified), J82.81 is specifically for chronic eosinophilic pneumonia. Related codes cover acute eosinophilic pneumonia (J82.82), eosinophilic asthma (J82.83) and other pulmonary eosinophilia, not elsewhere classified (J82.89).

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.