ICD-10-CM 2027 diagnosis code
T88.59Other complications of anesthesia
T88.59 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.
Looking up by condition? See ICD-10 code for Anesthesia effect.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About T88.59
T88.59 is the ICD-10-CM diagnosis code for other complications of anesthesia. It belongs to category T88 (other complications of surgical and medical care, not elsewhere classified), 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 T88.5, choose T88.59 (Other complications of anesthesia) only when documentation doesn't support a more specific option: hypothermia following anesthesia (T88.51), failed moderate sedation during procedure (T88.52) and unintended awareness under general anesthesia during procedure (T88.53).
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.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
7th character
The appropriate 7th character is to be added to each code from category T88
Notes that apply from higher levels
Instructions written at a parent level also apply to T88.59.
› From T88.5 Other complications of anesthesia
- code for adverse effect, if applicable, to identify drug (T41.- with fifth or sixth character 5)
› From T88 Other complications of surgical and medical care, not elsewhere classified
- complication following infusion, transfusion and therapeutic injection (T80.-)
- complication following procedure NEC (T81.-)
- complications of anesthesia in labor and delivery (O74.-)
- complications of anesthesia in pregnancy (O29.-)
- complications of anesthesia in puerperium (O89.-)
- complications of devices, implants and grafts (T82-T85)
- complications of obstetric surgery and procedure (O75.4)
- dermatitis due to drugs and medicaments (L23.3, L24.4, L25.1, L27.0-L27.1)
- poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4)
- specified complications classified elsewhere
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
10 entriesTerms in the official ICD-10-CM index that lead to T88.59.
- Anesthesia, anesthetic › complication or reaction NEC
- Anoxia (pathological) › cerebral › complicating › anesthesia (general) (local) or other sedation
- Complication (s) (from) (of) › anesthesia, anesthetic
- Effect, adverse › anesthesia
- Effect, adverse › anesthesia › specified NEC
- Effect, adverse › anesthesia › spinal and epidural
- Effect, adverse › anesthesia › spinal and epidural › headache
- Headache › spinal and epidural anesthesia - induced
- Inhalation › stomach contents or secretions › due to anesthesia (general) (local) or other sedation
- Reaction › toxic, to local anesthesia
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about T88.59
Is T88.59 billable?
- No. T88.59 is a header code. Report one of its more specific subcodes instead.