2027 ICD-10-CM Diagnosis Code J82.82Acute eosinophilic pneumonia
ICD-10-CM Codes›J00–J99›J80-J84›J82
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
J82.82 is a billable ICD-10-CM diagnosis code for acute eosinophilic pneumonia. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 196 through 198. 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 4 closely related codes. Coders also document this condition as acute drug-induced interstitial lung disorder. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified lower respiratory disease.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute drug-induced interstitial lung disorder
- Acute eosinophilic pneumonia caused by cigarette smoke
- Acute eosinophilic pneumonia caused by dust
- Acute eosinophilic pneumonia caused by medication
- Idiopathic acute eosinophilic pneumonitis
- Idiopathic eosinophilic pneumonitis
- Secondary acute eosinophilic pneumonia
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to J82.82: its own notes plus those printed at J82 and Chapter 10. A note printed at a category, block or chapter applies to every code under it.
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)
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 J82.82, its category, or a range that includes it.
Excludes2 2
These codes carry an Excludes2 note naming J82.82: its condition is not part of those codes, and both may be reported when the patient has both.
- D72.1 Eosinophiliapulmonary eosinophilia (J82.-) names J82.-, which includes this code
- Block J09-J18 Influenza and pneumoniaallergic or eosinophilic pneumonia (J82) names J82, which includes this code
Code First 1
These codes say to code first a condition named in the note, and J82.82 is one of the conditions named.
- J93.12 Secondary spontaneous pneumothorax
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Pneumonitis (acute) (primary) See Also: Pneumonia; J98.4
acute J82.82
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Pulmonary Eosinophilia
a condition characterized by infiltration of the lung with eosinophils due to inflammation or other disease processes. major eosinophilic lung diseases are the eosinophilic pneumonias caused by infections, allergens, or toxic agents.
Patient EducationClinical
Eosinophilic Disorders
Eosinophils are a type of white blood cell. They help fight off infections and play a role in your body's immune response. They can also build up and cause inflammation.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code History & ChangesHistory
Replacement J82.82 replaces the following previously assigned code(s):
- J82 - Pulmonary eosinophilia, not elsewhere classified
Questions About J82.82Overview
What is the ICD-10 code for acute eosinophilic pneumonia?
The ICD-10-CM code for acute eosinophilic pneumonia is J82.82 (sometimes written as J8282). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is J82.82 (Pulmonary eosinophilia, not elsewhere classified) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report acute eosinophilic pneumonia on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does J82.82 group to?
When acute eosinophilic pneumonia is the principal diagnosis on an inpatient stay, it groups to MS-DRG 198, 197, 196, with relative weights from 0.7256 to 1.8335 depending on complications. Higher weights mean higher Medicare reimbursement.
Is J82.82 a CC or MCC?
CMS lists J82.82 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 4 closely related codes in its exclusion list.
