2027 ICD-10-CM Diagnosis Code J95.4Chemical pneumonitis due to anesthesia
ICD-10-CM Codes›J00–J99›J95›J95
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
J95.4 is a billable ICD-10-CM diagnosis code for chemical pneumonitis due to anesthesia. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 205 through 206, 791, 793. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 56 closely related codes. Coders also document this condition as chemical pneumonitis caused by anesthesia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Aspiration pneumonitis and Postprocedural or postoperative respiratory system complication.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Chemical pneumonitis caused by anesthesia
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to J95.4: its own notes plus those printed at J95 and Chapter 10. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Mendelson's syndrome
- Postprocedural aspiration pneumonia
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- smoke inhalation (T59.81-)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code for adverse effect, if applicable, to identify drug (T41.- with fifth or sixth character 5)
Notes
General instructions on how these codes are used.
- When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g. tracheobronchitis to bronchitis in J40).
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name J95.4, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming J95.4: they are not reported together with it, unless the two conditions are unrelated.
Excludes2 1
These codes carry an Excludes2 note naming J95.4: its condition is not part of those codes, and both may be reported when the patient has both.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Pneumonitis (acute) (primary) See Also: Pneumonia; J98.4
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Anesthesia
Anesthesia is the use of medicines, called anesthetics, to prevent pain during surgery and other medical procedures. Medicine may be given by injection, inhalation, topical lotion, spray, eye drops, or a skin patch.
The full article covers:
- What is anesthesia?
- What is anesthesia used for?
- What are the types of anesthesia?
- What are the risks of anesthesia?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert J95.4 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About J95.4Overview
What is the ICD-10 code for chemical pneumonitis due to anesthesia?
The ICD-10-CM code for chemical pneumonitis due to anesthesia is J95.4 (sometimes written as J954). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is J95.4 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report chemical pneumonitis due to anesthesia on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does J95.4 group to?
When chemical pneumonitis due to anesthesia is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 206, 205, with relative weights from 0.9255 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.
Is J95.4 a CC or MCC?
CMS lists J95.4 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 56 closely related codes in its exclusion list.
Can J95.4 be reported with O74.0?
Not as a rule. The Excludes1 note on J95.4 lists "aspiration pneumonitis due to anesthesia complicating labor and delivery (O74.0)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
