Z92.84 Personal history of unintended awareness under general anesthesia

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Excludes2 (not included here)

• unintended awareness under general anesthesia during procedure (T88.53)

Applies from Z92 Personal history of medical treatment

Excludes2 (not included here)

• postprocedural states (Z98.-)

MS-DRG index

Defines the logic of DRG(s) 951 in MDC 23.

Approximate ICD-9-CM (GEMs)

• V15.89 Other specified personal history presenting hazards to health (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Unacceptable principal diagnosis: These codes describe a circumstance which influences care but is not a current illness or injury, or capture only an underlying condition, and are unacceptable as principal diagnosis.

Code annotations containing back-references to Z92.84

Back-references to Z92.84

• Type 2 Excludes: T88.53 Unintended awareness under general anesthesia during procedure ("personal history of unintended awareness under general anesthesia (Z92.84)")

Back-references to Z92

• Type 2 Excludes: Z87.7 Personal history of (corrected) congenital malformations ("personal history of medical treatment (Z92.-)")

Diagnosis Index entries for Z92.84

• Anesthesia, anesthetic › complication or reaction NEC › unintended awareness under general anesthesia during procedure › personal history of
• History › personal (of) › unintended awareness under general anesthesia

Nearby codes

• Z92.3 Personal history of irradiation
• Z92.8 Personal history of other medical treatment
• Z92.81 Personal history of extracorporeal membrane oxygenation (ECMO)
• Z92.82 Status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility
• Z92.83 Personal history of failed moderate sedation
• Z92.84 Personal history of unintended awareness under general anesthesia (this code)
• Z92.85 Personal history of cellular therapy
• Z92.850 Personal history of Chimeric Antigen Receptor T-cell therapy
• Z92.858 Personal history of other cellular therapy
• Z92.859 Personal history of cellular therapy, unspecified
• Z92.86 Personal history of gene therapy