ICD-10-CM 2027
ICD-10 code for anesthesia effect
From the official ICD-10-CM alphabetic index entry “Effect, adverse › anesthesia”. Page updated September 29, 2026.
About coding anesthesia effect
The ICD-10-CM code for anesthesia effect is T88.59 (Other complications of anesthesia). The official index lists 14 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on T88.59.
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.
More specific anesthesia effect codes (official index)
- in labor and delivery O74.9 — Complication of anesthesia during labor and delivery, unspecified
- local, toxic
- in labor and delivery O74.4 — Toxic reaction to local anesthesia during labor and delivery
- in pregnancy NEC O29.3 — Toxic reaction to local anesthesia during pregnancy
- postpartum, puerperal O89.3 — Toxic reaction to local anesthesia during the puerperium
- postpartum, puerperal O89.9 — Complication of anesthesia during the puerperium, unspecified
- specified NEC T88.59 — Other complications of anesthesia
- in labor and delivery O74.8 — Other complications of anesthesia during labor and delivery
- postpartum, puerperal O89.8 — Other complications of anesthesia during the puerperium
- spinal and epidural T88.59 — Other complications of anesthesia
- headache T88.59 — Other complications of anesthesia
- in labor and delivery O74.5 — Spinal and epidural anesthesia-induced headache during labor and delivery
- postpartum, puerperal O89.4 — Spinal and epidural anesthesia-induced headache during the puerperium
- specified NEC
- in labor and delivery O74.6 — Other complications of spinal and epidural anesthesia during labor and delivery
- postpartum, puerperal O89.5 — Other complications of spinal and epidural anesthesia during the puerperium
Common questions about anesthesia effect ICD-10 codes
What is the ICD-10 code for anesthesia effect?
- T88.59 — Other complications of anesthesia (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: O74.9, O74.4, O29.3, O89.3 and others below.
What is the ICD-10 code for spinal and epidural anesthesia effect?
- T88.59 — Other complications of anesthesia (header code; choose a more specific subcode).
Is T88.59 billable?
- No. T88.59 is a header code. Report one of its more specific subcodes instead.