T80.82XA (Complication of immune effector cellular therapy, initial encounter) compared with T80.82XS (Complication of immune effector cellular therapy, sequela), from the official CMS tabular data. T80.82XA and T80.82XS code the same injury at a different phase of treatment.
Same underlying diagnosis, different encounter phase.
The 7th character records the phase of care for the encounter being coded, so a single encounter takes one of these characters, not several. Review whether both phases belong on the same episode of care.
Source: ICD-10-CM Official Guidelines, Section I.C.19.a
Same injury, other encounter phase. T80.82XA and T80.82XS code the same injury at a different phase of treatment, set by the 7th character.
The 7th character records the type of care given at the encounter being coded (ICD-10-CM Official Guidelines, Section I.C.19.a), so one encounter takes one of these, not both.
| T80.82XAComplication of immune effector cellular therapy, initial encounter | T80.82XSComplication of immune effector cellular therapy, sequela | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Complication of immune effector cellular therapy, initial encounter is a billable ICD-10-CM diagnosis code (T80.82A). | Complication of immune effector cellular therapy, sequela is a billable ICD-10-CM diagnosis code (T80.82S). |
| 7th character | The appropriate 7th character is to be added to each code from category T80 | The appropriate 7th character is to be added to each code from category T80 |
| Includes | complications following perfusion Complication of chimeric antigen receptor (CAR-T) cell therapy Complication of IEC therapy | complications following perfusion Complication of chimeric antigen receptor (CAR-T) cell therapy Complication of IEC therapy |
| Use additional code | code to identify the specific complication, such as: cytokine release syndrome (D89.83-) immune effector cell-associated neurotoxicity syndrome (G92.0-) | code to identify the specific complication, such as: cytokine release syndrome (D89.83-) immune effector cell-associated neurotoxicity syndrome (G92.0-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources