ICD-10-CM 2027 diagnosis code
T80.82Complication of immune effector cellular therapy
T80.82 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.
Code last changed in FY2022 (effective October 1, 2021). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About T80.82
T80.82 is the ICD-10-CM diagnosis code for complication of immune effector cellular therapy. It belongs to category T80 (complications following infusion, transfusion and therapeutic injection), block T80-T88 (complications of surgical and medical care, not elsewhere classified) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
Within T80.8 (other complications following infusion, transfusion and therapeutic injection), T80.82 is specifically for complication of immune effector cellular therapy. Related codes cover Extravasation of vesicant agent (T80.81) and other complications following infusion, transfusion and therapeutic injection (T80.89).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
The conditions in its Excludes2 note aren't part of T80.82, but may be coded alongside it if the patient has both: adverse effect of immune checkpoint inhibitors and immunostimulant drugs (T45.AX5), complication of bone marrow transplant (T86.0) and complication of stem cell transplant (T86.5).
Use an additional code to identify the specific complication, such as: cytokine release syndrome (D89.83-) and immune effector cell-associated neurotoxicity syndrome (G92.0-).
It was added in FY2022, effective October 1, 2021.
7th character
The appropriate 7th character is to be added to each code from category T80
Coding notes
- Complication of chimeric antigen receptor (CAR-T) cell therapy
- Complication of IEC therapy
Notes that apply from higher levels
Instructions written at a parent level also apply to T80.82.
› From T80 Complications following infusion, transfusion and therapeutic injection
- complications following perfusion
- bone marrow transplant rejection (T86.01)
- febrile nonhemolytic transfusion reaction (R50.84)
- fluid overload due to transfusion (E87.71)
- posttransfusion purpura (D69.51)
- transfusion associated circulatory overload (TACO) (E87.71)
- transfusion (red blood cell) associated hemochromatosis (E83.111)
- transfusion related acute lung injury (TRALI) (J95.84)
Broader instructions also apply from T80-T88 Complications of surgical and medical care, not elsewhere classified and Chapter 19: Injury, poisoning and certain other consequences of external causes.
Alphabetic index entries
3 entriesTerms in the official ICD-10-CM index that lead to T80.82.
Codes whose notes reference T80.82
- G92.0Code first
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2022 (effective 10/1/2021): Added
- No changes since FY2022.
Common questions about T80.82
Is T80.82 billable?
- No. T80.82 is a header code. Report one of its more specific subcodes instead.