T88.53
Unintended awareness under general anesthesia during procedure
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 13 never code together
T88code
Excludes2
- complication following infusion, transfusion and therapeutic injection (T80.-)T80.-
- complication following procedure NEC (T81.-)T81.-
- complications of anesthesia in labor and delivery (O74.-)O74.-
- complications of anesthesia in pregnancy (O29.-)O29.-
- complications of anesthesia in puerperium (O89.-)O89.-
- complications of devices, implants and grafts (T82-T85)T82-T85
- complications of obstetric surgery and procedure (O75.4)O75.4
- dermatitis due to drugs and medicaments (L23.3, L24.4, L25.1, L27.0-L27.1)L23.3L24.4L25.1L27.0-L27.1
- poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4)T36-T65
- specified complications classified elsewhere
Excludes2 — not included here, but the patient may have both. Code both when documented.
7th character 3
A initial encounter
D subsequent encounter
S sequela
Instructional notes 4
T88.5code
Use additional code
- code for adverse effect, if applicable, to identify drug (T41.- with fifth or sixth character 5)T41.-
S00-T88chapter
Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here 2
- Complication (s) (from) (of)
- Anesthesia, anesthetic R20.0
Alongside this code 3 same parent — T88.5
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.