J30.1 vs T78.41XD
J30.1 (Allergic rhinitis due to pollen) compared with T78.41XD (Arthus phenomenon, subsequent encounter), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. T78.41XD carries an Excludes1 note covering J30.1: “hay fever (J30.1)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| J30.1Allergic rhinitis due to pollen | T78.41XDArthus phenomenon, subsequent encounter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | J00-J99 — Diseases of the Respiratory System (J00-J99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Allergic rhinitis due to pollen is a billable ICD-10-CM diagnosis code (J30.1). | Arthus phenomenon, subsequent encounter is a billable ICD-10-CM diagnosis code (T78.41D). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T78 |
| Includes | spasmodic rhinorrhea Allergy NOS due to pollen Hay fever Pollinosis | Arthus reaction |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources