J95.4Chemical pneumonitis due to anesthesia

J95.4 is the ICD-10-CM diagnosis code for chemical pneumonitis due to anesthesia. It belongs to category J95 (intraoperative and postprocedural complications and disorders of respiratory system, not elsewhere classified), block J95 (intraoperative and postprocedural complications and disorders of respiratory system, not elsewhere classified) and chapter 10 (diseases of the respiratory system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within J95 (intraoperative and postprocedural complications and disorders of respiratory system, not elsewhere classified), J95.4 is specifically for chemical pneumonitis due to anesthesia. Related codes cover tracheostomy complications (J95.0), acute pulmonary insufficiency following thoracic surgery (J95.1), acute pulmonary insufficiency following nonthoracic surgery (J95.2), chronic pulmonary insufficiency following surgery (J95.3), postprocedural subglottic stenosis (J95.5), intraoperative hemorrhage and hematoma of a respiratory system organ or structure complicating a procedure (J95.6), accidental puncture and laceration of a respiratory system organ or structure during a procedure (J95.7) and other intraoperative and postprocedural complications and disorders of respiratory system, not elsewhere classified (J95.8).

Don't report J95.4 together with the conditions in its Excludes1 note: aspiration pneumonitis due to anesthesia complicating labor and delivery (O74.0), aspiration pneumonitis due to anesthesia complicating pregnancy (O29) and aspiration pneumonitis due to anesthesia complicating the puerperium (O89.01).

Use an additional code for adverse effect, if applicable, to identify drug (T41.- with fifth or sixth character 5).

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 205 (Other Respiratory System Diagnoses with MCC, relative weight 1.8244), DRG 206 (Other Respiratory System Diagnoses without MCC, relative weight 0.9257), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 04 (Diseases and Disorders of the Respiratory System) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 997.39 (other respiratory complications).