T88.9 Complication of surgical and medical care, unspecified

The ICD-10-CM code for Complication of surgical and medical care, unspecified is T88.9 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

19: Injury, poisoning and certain other consequences of external causes (S00-T88)

Section

T80-T88: Complications of surgical and medical care, not elsewhere classified (T80-T88)

Category T88

15 codes (13 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to T88.9:

• Misadventure (of) (prophylactic) (therapeutic)
• Complication (s) (from) (of) › ultrasound therapy NEC
• Complication (s) (from) (of) › phototherapy
• Complication (s) (from) (of) › medical procedures
• Effect, adverse › medical care
• Misadventure (of) (prophylactic) (therapeutic) › local applications (of fomentations, plasters, etc.)
• Misadventure (of) (prophylactic) (therapeutic) › medical care (early) (late)
• Complication (s) (from) (of) › electroshock therapy

Official Coding Guidelines

Used with any code in range A00.0-T88.9, Z00-Z99

1) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.

Code ranges A00.0-T88.9, Z00-Z99.8, U00-U85 (TOC)

3. Code or codes from A00.0 through T88.9, Z00-Z99.8, U00-U85 .......................................... 13

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool