T81 Complications of procedures, not elsewhere classified

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Complications of procedures, not elsewhere classified is T81 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
T80-T88: Complications of surgical and medical care, not elsewhere classified (T80-T88)
Category T81
95 codes (80 billable)
FY2026 Status
Stable since FY2024
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • complications following immunization (T88.0-T88.1)
  • complications following infusion, transfusion and therapeutic injection (T80.-)
  • complications of transplanted organs and tissue (T86.-)
  • specified complications classified elsewhere, such as:
  • complication of prosthetic devices, implants and grafts (T82-T85)
  • dermatitis due to drugs and medicaments (L23.3, L24.4, L25.1, L27.0-L27.1)
  • endosseous dental implant failure (M27.6-)
  • floppy iris syndrome (IFIS) (intraoperative) H21.81
  • intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-)
  • ostomy complications (J95.0-, K94.-, N99.5-)
  • plateau iris syndrome (post-iridectomy) (postprocedural) H21.82
  • poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4)
Use Additional Code
  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.2
Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.3

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

References

Related Codes

More Specific Codes

T81.1 Postprocedural shock T81.10 Postprocedural shock unspecified T81.11 Postprocedural cardiogenic shock T81.12 Postprocedural septic shock T81.19 Other postprocedural shock T81.3 Disruption of wound, not elsewhere classified T81.30 Disruption of wound, unspecified T81.31 Disruption of external operation (surgical) wound, not elsewhere classified T81.32 Disruption of internal operation (surgical) wound, not elsewhere classified T81.320 Disruption or dehiscence of gastrointestinal tract anastomosis, repair, or closure T81.321 Disruption or dehiscence of closure of internal operation (surgical) wound of abdominal wall muscle or fascia T81.328 Disruption or dehiscence of closure of other specified internal operation (surgical) wound T81.329 Deep disruption or dehiscence of operation wound, unspecified T81.33 Disruption of traumatic injury wound repair T81.4 Infection following a procedure T81.40 Infection following a procedure, unspecified T81.41 Infection following a procedure, superficial incisional surgical site T81.42 Infection following a procedure, deep incisional surgical site T81.43 Infection following a procedure, organ and space surgical site T81.44 Sepsis following a procedure T81.49 Infection following a procedure, other surgical site T81.5 Complications of foreign body accidentally left in body following procedure T81.50 Unspecified complication of foreign body accidentally left in body following procedure T81.500 Unspecified complication of foreign body accidentally left in body following surgical operation T81.501 Unspecified complication of foreign body accidentally left in body following infusion or transfusion T81.502 Unspecified complication of foreign body accidentally left in body following kidney dialysis T81.503 Unspecified complication of foreign body accidentally left in body following injection or immunization T81.504 Unspecified complication of foreign body accidentally left in body following endoscopic examination T81.505 Unspecified complication of foreign body accidentally left in body following heart catheterization T81.506 Unspecified complication of foreign body accidentally left in body following aspiration, puncture or other catheterization

Related Codes in T81

T81.1 Postprocedural shock T81.10 Postprocedural shock unspecified T81.11 Postprocedural cardiogenic shock T81.12 Postprocedural septic shock T81.19 Other postprocedural shock T81.3 Disruption of wound, not elsewhere classified T81.30 Disruption of wound, unspecified T81.31 Disruption of external operation (surgical) wound, not elsewhere classified T81.32 Disruption of internal operation (surgical) wound, not elsewhere classified T81.320 Disruption or dehiscence of gastrointestinal tract anastomosis, repair, or closure T81.321 Disruption or dehiscence of closure of internal operation (surgical) wound of abdominal wall muscle or fascia T81.328 Disruption or dehiscence of closure of other specified internal operation (surgical) wound T81.329 Deep disruption or dehiscence of operation wound, unspecified T81.33 Disruption of traumatic injury wound repair T81.4 Infection following a procedure T81.40 Infection following a procedure, unspecified T81.41 Infection following a procedure, superficial incisional surgical site T81.42 Infection following a procedure, deep incisional surgical site T81.43 Infection following a procedure, organ and space surgical site T81.44 Sepsis following a procedure
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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