2026 ICD-10-CM Diagnosis Code J39.3Upper respiratory tract hypersensitivity reaction, site unspecified
ICD-10-CM Codes›J00–J99›J30-J39›J39
- Billable — Valid for Submission
- Not Chronic
J39.3 is a billable ICD-10-CM diagnosis code for upper respiratory tract hypersensitivity reaction, site unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 11 through 13, 152 through 153. Coders also document this condition as upper respiratory tract hypersensitivity reaction. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified upper respiratory disease.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Upper respiratory tract hypersensitivity reaction
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
- hypersensitivity reaction of upper respiratory tract, such as:
- extrinsic allergic alveolitis J67.9
- pneumoconiosis J60 J67.9
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Hypersensitive, hypersensitiveness, hypersensitivity See Also: Allergy;
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Allergy
An allergy is a reaction by your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing. Substances that often cause reactions are:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert J39.3 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About J39.3Overview
What is the ICD-10 code for upper respiratory tract hypersensitivity reaction, site unspecified?
The ICD-10-CM code for upper respiratory tract hypersensitivity reaction, site unspecified is J39.3 (sometimes written as J393). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is J39.3 (Other diseases of upper respiratory tract) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report upper respiratory tract hypersensitivity reaction, site unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does J39.3 group to?
When upper respiratory tract hypersensitivity reaction, site unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 11, 12, 13, 152, 153, with relative weights from 0.7382 to 5.4541 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of J39.3?
Under the General Equivalence Mappings, upper respiratory tract hypersensitivity reaction, site unspecified converts to ICD-9-CM 478.8 (urt hypersens react NOS). The mapping is a direct match.
