J95.4 Chemical pneumonitis due to anesthesia

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Mendelson's syndrome
• Postprocedural aspiration pneumonia

Excludes1 (never code together)

• aspiration pneumonitis due to anesthesia complicating labor and delivery (O74.0)
• aspiration pneumonitis due to anesthesia complicating pregnancy (O29)
• aspiration pneumonitis due to anesthesia complicating the puerperium (O89.01)

Use additional code

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

Applies from J95 Intraoperative and postprocedural complications and disorders of respiratory system, not elsewhere classified

Excludes2 (not included here)

• aspiration pneumonia (J69.-)
• emphysema (subcutaneous) resulting from a procedure (T81.82)
• hypostatic pneumonia (J18.2)
• pulmonary manifestations due to radiation (J70.0-J70.1)

MS-DRG index

Defines the logic of DRG(s) 205-206 in MDC 04.

Approximate ICD-9-CM (GEMs)

• 997.39 Other respiratory complications (approximate)

Code annotations containing back-references to J95.4

Back-references to J95.4

• Type 1 Excludes: J69 Pneumonitis due to solids and liquids ("postprocedural pneumonitis (J95.4)")
• Type 1 Excludes: J69.0 Pneumonitis due to inhalation of food and vomit ("chemical pneumonitis due to anesthesia (J95.4)")

Back-references to J95

• Type 2 Excludes: T81 Complications of procedures, not elsewhere classified ("intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-)")

Diagnosis Index entries for J95.4

• Complication (s) (from) (of) › respiratory system › postoperative › Mendelson's syndrome (chemical pneumonitis)
• Mendelson's syndrome (due to anesthesia)
• Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › aspiration › postprocedural
• Pneumonitis (acute) (primary) › aspiration › due to › anesthesia
• Pneumonitis (acute) (primary) › chemical (due to gases, fumes or vapors) (inhalation) › due to anesthesia
• Pneumonitis (acute) (primary) › postanesthetic
• Pneumonitis (acute) (primary) › postoperative

Nearby codes

• J95.04 Tracheo-esophageal fistula following tracheostomy
• J95.09 Other tracheostomy complication
• J95.1 Acute pulmonary insufficiency following thoracic surgery
• J95.2 Acute pulmonary insufficiency following nonthoracic surgery
• J95.3 Chronic pulmonary insufficiency following surgery
• J95.4 Chemical pneumonitis due to anesthesia (this code)
• J95.5 Postprocedural subglottic stenosis
• J95.6 Intraoperative hemorrhage and hematoma of a respiratory system organ or structure complicating a procedure
• J95.61 Intraoperative hemorrhage and hematoma of a respiratory system organ or structure complicating a respiratory system procedure
• J95.62 Intraoperative hemorrhage and hematoma of a respiratory system organ or structure complicating other procedure
• J95.7 Accidental puncture and laceration of a respiratory system organ or structure during a procedure