R55 vs T81.1
R55 (Syncope and collapse) compared with T81.1 (Postprocedural shock), 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. R55 carries an Excludes1 note covering T81.1: “postprocedural shock (T81.1-)”
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
| R55Syncope and collapse | T81.1Postprocedural shock | |
|---|---|---|
| Billing status | Billable | Non-billable header Report instead: T81.10XA, T81.10XD, T81.10XS, T81.11XA, T81.11XD |
| Classification | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Syncope and collapse is a billable ICD-10-CM diagnosis code (R55). | Postprocedural shock is a non-billable ICD-10-CM category code (T81.1). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T81 |
| Includes | Blackout Fainting Vasovagal attack | Shock during or resulting from a procedure, not elsewhere classified |
| Use additional code | — | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication code to identify devices involved and details of circumstances (Y62-Y82) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources