2026 ICD-10-CM Diagnosis Code T81Complications of procedures, not elsewhere classified

ICD-10-CM Codes›S00–T88›T80-T88›T81

ICD-10-CM T81
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T81 is a non-billable ICD-10-CM category code for complications of procedures, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as T81.10XA, T81.10XD, T81.10XS, and T81.11XA.

Code Identity

ICD-10-CM Code
T81
Billable Status
No — Non-Billable Category
Code Describes
Complications of procedures, not elsewhere classified
Chapter
T80-T88
Complications of surgical and medical care, not elsewhere classified

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT80-T88Complications of surgical and medical care, not elsewhere classified
CategoryT81Complications of procedures, not elsewhere classified
This CodeT81Complications of procedures, not elsewhere classified

Specific Coding for Complications of procedures, not elsewhere classifiedOverview

Non-specific codes like T81 require more characters. Use one of these billable codes instead:

  • T81.1 for Postprocedural shock

  • T81.10 for Postprocedural shock unspecified

  • T81.11 for Postprocedural cardiogenic shock

  • T81.12 for Postprocedural septic shock

  • T81.19 for Other postprocedural shock

  • T81.3 for Disruption of wound, not elsewhere classified

  • T81.30 for Disruption of wound, unspecified

  • T81.31 for Disruption of external operation (surgical) wound, not elsewhere classified

  • T81.32 for Disruption of internal operation (surgical) wound, not elsewhere classified

  • T81.33 for Disruption of traumatic injury wound repair

  • T81.4 for Infection following a procedure

  • T81.40 for Infection following a procedure, unspecified

  • T81.41 for Infection following a procedure, superficial incisional surgical site

  • T81.42 for Infection following a procedure, deep incisional surgical site

  • T81.43 for Infection following a procedure, organ and space surgical site

  • T81.44 for Sepsis following a procedure

  • T81.49 for Infection following a procedure, other surgical site

  • T81.5 for Complications of foreign body accidentally left in body following procedure

  • T81.50 for Unspecified complication of foreign body accidentally left in body following procedure

  • T81.51 for Adhesions due to foreign body accidentally left in body following procedure

  • T81.52 for Obstruction due to foreign body accidentally left in body following procedure

  • T81.53 for Perforation due to foreign body accidentally left in body following procedure

  • T81.59 for Other complications of foreign body accidentally left in body following procedure

  • T81.6 for Acute reaction to foreign substance accidentally left during a procedure

  • T81.60 for Unspecified acute reaction to foreign substance accidentally left during a procedure

  • T81.61 for Aseptic peritonitis due to foreign substance accidentally left during a procedure

  • T81.69 for Other acute reaction to foreign substance accidentally left during a procedure

  • T81.7 for Vascular complications following a procedure, not elsewhere classified

  • T81.71 for Complication of artery following a procedure, not elsewhere classified

  • T81.72 for Complication of vein following a procedure, not elsewhere classified

  • T81.8 for Other complications of procedures, not elsewhere classified

  • T81.81 for Complication of inhalation therapy

  • T81.82 for Emphysema (subcutaneous) resulting from a procedure

  • T81.83 for Persistent postprocedural fistula

  • T81.89 for Other complications of procedures, not elsewhere classified

  • T81.9 for Unspecified complication of procedure

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Complications of procedures, not elsewhere classified (T81). Use the following options for the applicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Use Additional Code

  • code for adverse effect, if applicable, to identify drug T36 T50

Type 2 Excludes

  • 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

7th Character Note

  • The appropriate 7th character is to be added to each code from category T81

7th Character

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About T81Overview

Is T81 (Complications of procedures, not elsewhere classified) a billable code?

No. This is a category header that groups the codes for complications of procedures, not elsewhere classified, and headers cannot be submitted on claims. Claims for complications of procedures, not elsewhere classified need a more specific code from this category, such as T81.10XA, T81.10XD, and T81.10XS.