B08.011 vs T88.1
B08.011 (Vaccinia not from vaccine) compared with T88.1 (Other complications following immunization, not elsewhere classified), 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. B08.011 carries an Excludes1 note covering T88.1: “vaccinia (from vaccination) (generalized) (T88.1)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. T88.1 carries an Excludes1 note covering B08.011: “vaccinia not from vaccine (B08.011)”
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
| B08.011Vaccinia not from vaccine | T88.1Other complications following immunization, not elsewhere classified | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Vaccinia not from vaccine is a billable ICD-10-CM diagnosis code (B08.011). | Other complications following immunization, not elsewhere classified is a non-billable ICD-10-CM category code (T88.1). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T88 |
| Includes | — | Generalized vaccinia Rash following immunization |
| 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