ICD-10-CM Tabular Index · Chapter 19 · FY 2026 T81

Complications of procedures, not elsewhere classified (T81) ICD-10-CM

The T81 code range covers complications of procedures, not elsewhere classified with 335 ICD-10-CM diagnosis codes. 240 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
335
Diagnosis Codes
240
Billable Codes
T81
Code Range
T80–T88
Parent Section

Use Additional Code

The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

ICD-10-CM

Codes in the T81 Range 335 codes · 240 billable

335 of 335 shown
  • T81 Complications of procedures, not elsewhere classifiedNon-billable
  • T81.1 Postprocedural shockNon-billable
  • T81.10 Postprocedural shock unspecifiedNon-billable
  • T81.10XA Postprocedural shock unspecified, initial encounter
  • T81.10XD Postprocedural shock unspecified, subsequent encounter
  • T81.10XS Postprocedural shock unspecified, sequela
  • T81.11 Postprocedural cardiogenic shockNon-billable
  • T81.11XA Postprocedural cardiogenic shock, initial encounter
  • T81.11XD Postprocedural cardiogenic shock, subsequent encounter
  • T81.11XS Postprocedural cardiogenic shock, sequela
  • T81.12 Postprocedural septic shockNon-billable
  • T81.12XA Postprocedural septic shock, initial encounter
  • T81.12XD Postprocedural septic shock, subsequent encounter
  • T81.12XS Postprocedural septic shock, sequela
  • T81.19 Other postprocedural shockNon-billable
  • T81.19XA Other postprocedural shock, initial encounter
  • T81.19XD Other postprocedural shock, subsequent encounter
  • T81.19XS Other postprocedural shock, sequela
  • T81.3 Disruption of wound, not elsewhere classifiedNon-billable
  • T81.30 Disruption of wound, unspecifiedNon-billable
  • T81.30XA Disruption of wound, unspecified, initial encounter
  • T81.30XD Disruption of wound, unspecified, subsequent encounter
  • T81.30XS Disruption of wound, unspecified, sequela
  • T81.31 Disruption of external operation (surgical) wound, not elsewhere classifiedNon-billable
  • T81.31XA Disruption of external operation (surgical) wound, not elsewhere classified, initial encounter
  • T81.31XD Disruption of external operation (surgical) wound, not elsewhere classified, subsequent encounter
  • T81.31XS Disruption of external operation (surgical) wound, not elsewhere classified, sequela
  • T81.32 Disruption of internal operation (surgical) wound, not elsewhere classifiedNon-billable
  • T81.320 Disruption or dehiscence of gastrointestinal tract anastomosis, repair, or closureNon-billable
  • T81.320A Disruption or dehiscence of gastrointestinal tract anastomosis, repair, or closure, initial encounter
  • T81.320D Disruption or dehiscence of gastrointestinal tract anastomosis, repair, or closure, subsequent encounter
  • T81.320S Disruption or dehiscence of gastrointestinal tract anastomosis, repair, or closure, sequela
  • T81.321 Disruption or dehiscence of closure of internal operation (surgical) wound of abdominal wall muscle or fasciaNon-billable
  • T81.321A Disruption or dehiscence of closure of internal operation (surgical) wound of abdominal wall muscle or fascia, initial encounter
  • T81.321D Disruption or dehiscence of closure of internal operation (surgical) wound of abdominal wall muscle or fascia, subsequent encounter
  • T81.321S Disruption or dehiscence of closure of internal operation (surgical) wound of abdominal wall muscle or fascia, sequela
  • T81.328 Disruption or dehiscence of closure of other specified internal operation (surgical) woundNon-billable
  • T81.328A Disruption or dehiscence of closure of other specified internal operation (surgical) wound, initial encounter
  • T81.328D Disruption or dehiscence of closure of other specified internal operation (surgical) wound, subsequent encounter
  • T81.328S Disruption or dehiscence of closure of other specified internal operation (surgical) wound, sequela
  • T81.329 Deep disruption or dehiscence of operation wound, unspecifiedNon-billable
  • T81.329A Deep disruption or dehiscence of operation wound, unspecified, initial encounter
  • T81.329D Deep disruption or dehiscence of operation wound, unspecified, subsequent encounter
  • T81.329S Deep disruption or dehiscence of operation wound, unspecified, sequela
  • T81.33 Disruption of traumatic injury wound repairNon-billable
  • T81.33XA Disruption of traumatic injury wound repair, initial encounter
  • T81.33XD Disruption of traumatic injury wound repair, subsequent encounter
  • T81.33XS Disruption of traumatic injury wound repair, sequela
  • T81.4 Infection following a procedureNon-billable
  • T81.40 Infection following a procedure, unspecifiedNon-billable
  • T81.40XA Infection following a procedure, unspecified, initial encounter
  • T81.40XD Infection following a procedure, unspecified, subsequent encounter
  • T81.40XS Infection following a procedure, unspecified, sequela
  • T81.41 Infection following a procedure, superficial incisional surgical siteNon-billable
  • T81.41XA Infection following a procedure, superficial incisional surgical site, initial encounter
  • T81.41XD Infection following a procedure, superficial incisional surgical site, subsequent encounter
  • T81.41XS Infection following a procedure, superficial incisional surgical site, sequela
  • T81.42 Infection following a procedure, deep incisional surgical siteNon-billable
  • T81.42XA Infection following a procedure, deep incisional surgical site, initial encounter
  • T81.42XD Infection following a procedure, deep incisional surgical site, subsequent encounter
  • T81.42XS Infection following a procedure, deep incisional surgical site, sequela
  • T81.43 Infection following a procedure, organ and space surgical siteNon-billable
  • T81.43XA Infection following a procedure, organ and space surgical site, initial encounter
  • T81.43XD Infection following a procedure, organ and space surgical site, subsequent encounter
  • T81.43XS Infection following a procedure, organ and space surgical site, sequela
  • T81.44 Sepsis following a procedureNon-billable
  • T81.44XA Sepsis following a procedure, initial encounter
  • T81.44XD Sepsis following a procedure, subsequent encounter
  • T81.44XS Sepsis following a procedure, sequela
  • T81.49 Infection following a procedure, other surgical siteNon-billable
  • T81.49XA Infection following a procedure, other surgical site, initial encounter
  • T81.49XD Infection following a procedure, other surgical site, subsequent encounter
  • T81.49XS Infection following a procedure, other surgical site, sequela
  • T81.5 Complications of foreign body accidentally left in body following procedureNon-billable
  • T81.50 Unspecified complication of foreign body accidentally left in body following procedureNon-billable
  • T81.500 Unspecified complication of foreign body accidentally left in body following surgical operationNon-billable
  • T81.500A Unspecified complication of foreign body accidentally left in body following surgical operation, initial encounter
  • T81.500D Unspecified complication of foreign body accidentally left in body following surgical operation, subsequent encounter
  • T81.500S Unspecified complication of foreign body accidentally left in body following surgical operation, sequela
  • T81.501 Unspecified complication of foreign body accidentally left in body following infusion or transfusionNon-billable
  • T81.501A Unspecified complication of foreign body accidentally left in body following infusion or transfusion, initial encounter
  • T81.501D Unspecified complication of foreign body accidentally left in body following infusion or transfusion, subsequent encounter
  • T81.501S Unspecified complication of foreign body accidentally left in body following infusion or transfusion, sequela
  • T81.502 Unspecified complication of foreign body accidentally left in body following kidney dialysisNon-billable
  • T81.502A Unspecified complication of foreign body accidentally left in body following kidney dialysis, initial encounter
  • T81.502D Unspecified complication of foreign body accidentally left in body following kidney dialysis, subsequent encounter
  • T81.502S Unspecified complication of foreign body accidentally left in body following kidney dialysis, sequela
  • T81.503 Unspecified complication of foreign body accidentally left in body following injection or immunizationNon-billable
  • T81.503A Unspecified complication of foreign body accidentally left in body following injection or immunization, initial encounter
  • T81.503D Unspecified complication of foreign body accidentally left in body following injection or immunization, subsequent encounter
  • T81.503S Unspecified complication of foreign body accidentally left in body following injection or immunization, sequela
  • T81.504 Unspecified complication of foreign body accidentally left in body following endoscopic examinationNon-billable
  • T81.504A Unspecified complication of foreign body accidentally left in body following endoscopic examination, initial encounter
  • T81.504D Unspecified complication of foreign body accidentally left in body following endoscopic examination, subsequent encounter
  • T81.504S Unspecified complication of foreign body accidentally left in body following endoscopic examination, sequela
  • T81.505 Unspecified complication of foreign body accidentally left in body following heart catheterizationNon-billable
  • T81.505A Unspecified complication of foreign body accidentally left in body following heart catheterization, initial encounter
  • T81.505D Unspecified complication of foreign body accidentally left in body following heart catheterization, subsequent encounter
  • T81.505S Unspecified complication of foreign body accidentally left in body following heart catheterization, sequela
  • T81.506 Unspecified complication of foreign body accidentally left in body following aspiration, puncture or other catheterizationNon-billable
  • T81.506A Unspecified complication of foreign body accidentally left in body following aspiration, puncture or other catheterization, initial encounter
  • T81.506D Unspecified complication of foreign body accidentally left in body following aspiration, puncture or other catheterization, subsequent encounter
  • T81.506S Unspecified complication of foreign body accidentally left in body following aspiration, puncture or other catheterization, sequela
  • T81.507 Unspecified complication of foreign body accidentally left in body following removal of catheter or packingNon-billable
  • T81.507A Unspecified complication of foreign body accidentally left in body following removal of catheter or packing, initial encounter
  • T81.507D Unspecified complication of foreign body accidentally left in body following removal of catheter or packing, subsequent encounter
  • T81.507S Unspecified complication of foreign body accidentally left in body following removal of catheter or packing, sequela
  • T81.508 Unspecified complication of foreign body accidentally left in body following other procedureNon-billable
  • T81.508A Unspecified complication of foreign body accidentally left in body following other procedure, initial encounter
  • T81.508D Unspecified complication of foreign body accidentally left in body following other procedure, subsequent encounter
  • T81.508S Unspecified complication of foreign body accidentally left in body following other procedure, sequela
  • T81.509 Unspecified complication of foreign body accidentally left in body following unspecified procedureNon-billable
  • T81.509A Unspecified complication of foreign body accidentally left in body following unspecified procedure, initial encounter
  • T81.509D Unspecified complication of foreign body accidentally left in body following unspecified procedure, subsequent encounter
  • T81.509S Unspecified complication of foreign body accidentally left in body following unspecified procedure, sequela
  • T81.51 Adhesions due to foreign body accidentally left in body following procedureNon-billable
  • T81.510 Adhesions due to foreign body accidentally left in body following surgical operationNon-billable
  • T81.510A Adhesions due to foreign body accidentally left in body following surgical operation, initial encounter
  • T81.510D Adhesions due to foreign body accidentally left in body following surgical operation, subsequent encounter
  • T81.510S Adhesions due to foreign body accidentally left in body following surgical operation, sequela
  • T81.511 Adhesions due to foreign body accidentally left in body following infusion or transfusionNon-billable
  • T81.511A Adhesions due to foreign body accidentally left in body following infusion or transfusion, initial encounter
  • T81.511D Adhesions due to foreign body accidentally left in body following infusion or transfusion, subsequent encounter
  • T81.511S Adhesions due to foreign body accidentally left in body following infusion or transfusion, sequela
  • T81.512 Adhesions due to foreign body accidentally left in body following kidney dialysisNon-billable
  • T81.512A Adhesions due to foreign body accidentally left in body following kidney dialysis, initial encounter
  • T81.512D Adhesions due to foreign body accidentally left in body following kidney dialysis, subsequent encounter
  • T81.512S Adhesions due to foreign body accidentally left in body following kidney dialysis, sequela
  • T81.513 Adhesions due to foreign body accidentally left in body following injection or immunizationNon-billable
  • T81.513A Adhesions due to foreign body accidentally left in body following injection or immunization, initial encounter
  • T81.513D Adhesions due to foreign body accidentally left in body following injection or immunization, subsequent encounter
  • T81.513S Adhesions due to foreign body accidentally left in body following injection or immunization, sequela
  • T81.514 Adhesions due to foreign body accidentally left in body following endoscopic examinationNon-billable
  • T81.514A Adhesions due to foreign body accidentally left in body following endoscopic examination, initial encounter
  • T81.514D Adhesions due to foreign body accidentally left in body following endoscopic examination, subsequent encounter
  • T81.514S Adhesions due to foreign body accidentally left in body following endoscopic examination, sequela
  • T81.515 Adhesions due to foreign body accidentally left in body following heart catheterizationNon-billable
  • T81.515A Adhesions due to foreign body accidentally left in body following heart catheterization, initial encounter
  • T81.515D Adhesions due to foreign body accidentally left in body following heart catheterization, subsequent encounter
  • T81.515S Adhesions due to foreign body accidentally left in body following heart catheterization, sequela
  • T81.516 Adhesions due to foreign body accidentally left in body following aspiration, puncture or other catheterizationNon-billable
  • T81.516A Adhesions due to foreign body accidentally left in body following aspiration, puncture or other catheterization, initial encounter
  • T81.516D Adhesions due to foreign body accidentally left in body following aspiration, puncture or other catheterization, subsequent encounter
  • T81.516S Adhesions due to foreign body accidentally left in body following aspiration, puncture or other catheterization, sequela
  • T81.517 Adhesions due to foreign body accidentally left in body following removal of catheter or packingNon-billable
  • T81.517A Adhesions due to foreign body accidentally left in body following removal of catheter or packing, initial encounter
  • T81.517D Adhesions due to foreign body accidentally left in body following removal of catheter or packing, subsequent encounter
  • T81.517S Adhesions due to foreign body accidentally left in body following removal of catheter or packing, sequela
  • T81.518 Adhesions due to foreign body accidentally left in body following other procedureNon-billable
  • T81.518A Adhesions due to foreign body accidentally left in body following other procedure, initial encounter
  • T81.518D Adhesions due to foreign body accidentally left in body following other procedure, subsequent encounter
  • T81.518S Adhesions due to foreign body accidentally left in body following other procedure, sequela
  • T81.519 Adhesions due to foreign body accidentally left in body following unspecified procedureNon-billable
  • T81.519A Adhesions due to foreign body accidentally left in body following unspecified procedure, initial encounter
  • T81.519D Adhesions due to foreign body accidentally left in body following unspecified procedure, subsequent encounter
  • T81.519S Adhesions due to foreign body accidentally left in body following unspecified procedure, sequela
  • T81.52 Obstruction due to foreign body accidentally left in body following procedureNon-billable
  • T81.520 Obstruction due to foreign body accidentally left in body following surgical operationNon-billable
  • T81.520A Obstruction due to foreign body accidentally left in body following surgical operation, initial encounter
  • T81.520D Obstruction due to foreign body accidentally left in body following surgical operation, subsequent encounter
  • T81.520S Obstruction due to foreign body accidentally left in body following surgical operation, sequela
  • T81.521 Obstruction due to foreign body accidentally left in body following infusion or transfusionNon-billable
  • T81.521A Obstruction due to foreign body accidentally left in body following infusion or transfusion, initial encounter
  • T81.521D Obstruction due to foreign body accidentally left in body following infusion or transfusion, subsequent encounter
  • T81.521S Obstruction due to foreign body accidentally left in body following infusion or transfusion, sequela
  • T81.522 Obstruction due to foreign body accidentally left in body following kidney dialysisNon-billable
  • T81.522A Obstruction due to foreign body accidentally left in body following kidney dialysis, initial encounter
  • T81.522D Obstruction due to foreign body accidentally left in body following kidney dialysis, subsequent encounter
  • T81.522S Obstruction due to foreign body accidentally left in body following kidney dialysis, sequela
  • T81.523 Obstruction due to foreign body accidentally left in body following injection or immunizationNon-billable
  • T81.523A Obstruction due to foreign body accidentally left in body following injection or immunization, initial encounter
  • T81.523D Obstruction due to foreign body accidentally left in body following injection or immunization, subsequent encounter
  • T81.523S Obstruction due to foreign body accidentally left in body following injection or immunization, sequela
  • T81.524 Obstruction due to foreign body accidentally left in body following endoscopic examinationNon-billable
  • T81.524A Obstruction due to foreign body accidentally left in body following endoscopic examination, initial encounter
  • T81.524D Obstruction due to foreign body accidentally left in body following endoscopic examination, subsequent encounter
  • T81.524S Obstruction due to foreign body accidentally left in body following endoscopic examination, sequela
  • T81.525 Obstruction due to foreign body accidentally left in body following heart catheterizationNon-billable
  • T81.525A Obstruction due to foreign body accidentally left in body following heart catheterization, initial encounter
  • T81.525D Obstruction due to foreign body accidentally left in body following heart catheterization, subsequent encounter
  • T81.525S Obstruction due to foreign body accidentally left in body following heart catheterization, sequela
  • T81.526 Obstruction due to foreign body accidentally left in body following aspiration, puncture or other catheterizationNon-billable
  • T81.526A Obstruction due to foreign body accidentally left in body following aspiration, puncture or other catheterization, initial encounter
  • T81.526D Obstruction due to foreign body accidentally left in body following aspiration, puncture or other catheterization, subsequent encounter
  • T81.526S Obstruction due to foreign body accidentally left in body following aspiration, puncture or other catheterization, sequela
  • T81.527 Obstruction due to foreign body accidentally left in body following removal of catheter or packingNon-billable
  • T81.527A Obstruction due to foreign body accidentally left in body following removal of catheter or packing, initial encounter
  • T81.527D Obstruction due to foreign body accidentally left in body following removal of catheter or packing, subsequent encounter
  • T81.527S Obstruction due to foreign body accidentally left in body following removal of catheter or packing, sequela
  • T81.528 Obstruction due to foreign body accidentally left in body following other procedureNon-billable
  • T81.528A Obstruction due to foreign body accidentally left in body following other procedure, initial encounter
  • T81.528D Obstruction due to foreign body accidentally left in body following other procedure, subsequent encounter
  • T81.528S Obstruction due to foreign body accidentally left in body following other procedure, sequela
  • T81.529 Obstruction due to foreign body accidentally left in body following unspecified procedureNon-billable
  • T81.529A Obstruction due to foreign body accidentally left in body following unspecified procedure, initial encounter
  • T81.529D Obstruction due to foreign body accidentally left in body following unspecified procedure, subsequent encounter
  • T81.529S Obstruction due to foreign body accidentally left in body following unspecified procedure, sequela
  • T81.53 Perforation due to foreign body accidentally left in body following procedureNon-billable
  • T81.530 Perforation due to foreign body accidentally left in body following surgical operationNon-billable
  • T81.530A Perforation due to foreign body accidentally left in body following surgical operation, initial encounter
  • T81.530D Perforation due to foreign body accidentally left in body following surgical operation, subsequent encounter
  • T81.530S Perforation due to foreign body accidentally left in body following surgical operation, sequela
  • T81.531 Perforation due to foreign body accidentally left in body following infusion or transfusionNon-billable
  • T81.531A Perforation due to foreign body accidentally left in body following infusion or transfusion, initial encounter
  • T81.531D Perforation due to foreign body accidentally left in body following infusion or transfusion, subsequent encounter
  • T81.531S Perforation due to foreign body accidentally left in body following infusion or transfusion, sequela
  • T81.532 Perforation due to foreign body accidentally left in body following kidney dialysisNon-billable
  • T81.532A Perforation due to foreign body accidentally left in body following kidney dialysis, initial encounter
  • T81.532D Perforation due to foreign body accidentally left in body following kidney dialysis, subsequent encounter
  • T81.532S Perforation due to foreign body accidentally left in body following kidney dialysis, sequela
  • T81.533 Perforation due to foreign body accidentally left in body following injection or immunizationNon-billable
  • T81.533A Perforation due to foreign body accidentally left in body following injection or immunization, initial encounter
  • T81.533D Perforation due to foreign body accidentally left in body following injection or immunization, subsequent encounter
  • T81.533S Perforation due to foreign body accidentally left in body following injection or immunization, sequela
  • T81.534 Perforation due to foreign body accidentally left in body following endoscopic examinationNon-billable
  • T81.534A Perforation due to foreign body accidentally left in body following endoscopic examination, initial encounter
  • T81.534D Perforation due to foreign body accidentally left in body following endoscopic examination, subsequent encounter
  • T81.534S Perforation due to foreign body accidentally left in body following endoscopic examination, sequela
  • T81.535 Perforation due to foreign body accidentally left in body following heart catheterizationNon-billable
  • T81.535A Perforation due to foreign body accidentally left in body following heart catheterization, initial encounter
  • T81.535D Perforation due to foreign body accidentally left in body following heart catheterization, subsequent encounter
  • T81.535S Perforation due to foreign body accidentally left in body following heart catheterization, sequela
  • T81.536 Perforation due to foreign body accidentally left in body following aspiration, puncture or other catheterizationNon-billable
  • T81.536A Perforation due to foreign body accidentally left in body following aspiration, puncture or other catheterization, initial encounter
  • T81.536D Perforation due to foreign body accidentally left in body following aspiration, puncture or other catheterization, subsequent encounter
  • T81.536S Perforation due to foreign body accidentally left in body following aspiration, puncture or other catheterization, sequela
  • T81.537 Perforation due to foreign body accidentally left in body following removal of catheter or packingNon-billable
  • T81.537A Perforation due to foreign body accidentally left in body following removal of catheter or packing, initial encounter
  • T81.537D Perforation due to foreign body accidentally left in body following removal of catheter or packing, subsequent encounter
  • T81.537S Perforation due to foreign body accidentally left in body following removal of catheter or packing, sequela
  • T81.538 Perforation due to foreign body accidentally left in body following other procedureNon-billable
  • T81.538A Perforation due to foreign body accidentally left in body following other procedure, initial encounter
  • T81.538D Perforation due to foreign body accidentally left in body following other procedure, subsequent encounter
  • T81.538S Perforation due to foreign body accidentally left in body following other procedure, sequela
  • T81.539 Perforation due to foreign body accidentally left in body following unspecified procedureNon-billable
  • T81.539A Perforation due to foreign body accidentally left in body following unspecified procedure, initial encounter
  • T81.539D Perforation due to foreign body accidentally left in body following unspecified procedure, subsequent encounter
  • T81.539S Perforation due to foreign body accidentally left in body following unspecified procedure, sequela
  • T81.59 Other complications of foreign body accidentally left in body following procedureNon-billable
  • T81.590 Other complications of foreign body accidentally left in body following surgical operationNon-billable
  • T81.590A Other complications of foreign body accidentally left in body following surgical operation, initial encounter
  • T81.590D Other complications of foreign body accidentally left in body following surgical operation, subsequent encounter
  • T81.590S Other complications of foreign body accidentally left in body following surgical operation, sequela
  • T81.591 Other complications of foreign body accidentally left in body following infusion or transfusionNon-billable
  • T81.591A Other complications of foreign body accidentally left in body following infusion or transfusion, initial encounter
  • T81.591D Other complications of foreign body accidentally left in body following infusion or transfusion, subsequent encounter
  • T81.591S Other complications of foreign body accidentally left in body following infusion or transfusion, sequela
  • T81.592 Other complications of foreign body accidentally left in body following kidney dialysisNon-billable
  • T81.592A Other complications of foreign body accidentally left in body following kidney dialysis, initial encounter
  • T81.592D Other complications of foreign body accidentally left in body following kidney dialysis, subsequent encounter
  • T81.592S Other complications of foreign body accidentally left in body following kidney dialysis, sequela
  • T81.593 Other complications of foreign body accidentally left in body following injection or immunizationNon-billable
  • T81.593A Other complications of foreign body accidentally left in body following injection or immunization, initial encounter
  • T81.593D Other complications of foreign body accidentally left in body following injection or immunization, subsequent encounter
  • T81.593S Other complications of foreign body accidentally left in body following injection or immunization, sequela
  • T81.594 Other complications of foreign body accidentally left in body following endoscopic examinationNon-billable
  • T81.594A Other complications of foreign body accidentally left in body following endoscopic examination, initial encounter
  • T81.594D Other complications of foreign body accidentally left in body following endoscopic examination, subsequent encounter
  • T81.594S Other complications of foreign body accidentally left in body following endoscopic examination, sequela
  • T81.595 Other complications of foreign body accidentally left in body following heart catheterizationNon-billable
  • T81.595A Other complications of foreign body accidentally left in body following heart catheterization, initial encounter
  • T81.595D Other complications of foreign body accidentally left in body following heart catheterization, subsequent encounter
  • T81.595S Other complications of foreign body accidentally left in body following heart catheterization, sequela
  • T81.596 Other complications of foreign body accidentally left in body following aspiration, puncture or other catheterizationNon-billable
  • T81.596A Other complications of foreign body accidentally left in body following aspiration, puncture or other catheterization, initial encounter
  • T81.596D Other complications of foreign body accidentally left in body following aspiration, puncture or other catheterization, subsequent encounter
  • T81.596S Other complications of foreign body accidentally left in body following aspiration, puncture or other catheterization, sequela
  • T81.597 Other complications of foreign body accidentally left in body following removal of catheter or packingNon-billable
  • T81.597A Other complications of foreign body accidentally left in body following removal of catheter or packing, initial encounter
  • T81.597D Other complications of foreign body accidentally left in body following removal of catheter or packing, subsequent encounter
  • T81.597S Other complications of foreign body accidentally left in body following removal of catheter or packing, sequela
  • T81.598 Other complications of foreign body accidentally left in body following other procedureNon-billable
  • T81.598A Other complications of foreign body accidentally left in body following other procedure, initial encounter
  • T81.598D Other complications of foreign body accidentally left in body following other procedure, subsequent encounter
  • T81.598S Other complications of foreign body accidentally left in body following other procedure, sequela
  • T81.599 Other complications of foreign body accidentally left in body following unspecified procedureNon-billable
  • T81.599A Other complications of foreign body accidentally left in body following unspecified procedure, initial encounter
  • T81.599D Other complications of foreign body accidentally left in body following unspecified procedure, subsequent encounter
  • T81.599S Other complications of foreign body accidentally left in body following unspecified procedure, sequela
  • T81.6 Acute reaction to foreign substance accidentally left during a procedureNon-billable
  • T81.60 Unspecified acute reaction to foreign substance accidentally left during a procedureNon-billable
  • T81.60XA Unspecified acute reaction to foreign substance accidentally left during a procedure, initial encounter
  • T81.60XD Unspecified acute reaction to foreign substance accidentally left during a procedure, subsequent encounter
  • T81.60XS Unspecified acute reaction to foreign substance accidentally left during a procedure, sequela
  • T81.61 Aseptic peritonitis due to foreign substance accidentally left during a procedureNon-billable
  • T81.61XA Aseptic peritonitis due to foreign substance accidentally left during a procedure, initial encounter
  • T81.61XD Aseptic peritonitis due to foreign substance accidentally left during a procedure, subsequent encounter
  • T81.61XS Aseptic peritonitis due to foreign substance accidentally left during a procedure, sequela
  • T81.69 Other acute reaction to foreign substance accidentally left during a procedureNon-billable
  • T81.69XA Other acute reaction to foreign substance accidentally left during a procedure, initial encounter
  • T81.69XD Other acute reaction to foreign substance accidentally left during a procedure, subsequent encounter
  • T81.69XS Other acute reaction to foreign substance accidentally left during a procedure, sequela
  • T81.7 Vascular complications following a procedure, not elsewhere classifiedNon-billable
  • T81.71 Complication of artery following a procedure, not elsewhere classifiedNon-billable
  • T81.710 Complication of mesenteric artery following a procedure, not elsewhere classifiedNon-billable
  • T81.710A Complication of mesenteric artery following a procedure, not elsewhere classified, initial encounter
  • T81.710D Complication of mesenteric artery following a procedure, not elsewhere classified, subsequent encounter
  • T81.710S Complication of mesenteric artery following a procedure, not elsewhere classified, sequela
  • T81.711 Complication of renal artery following a procedure, not elsewhere classifiedNon-billable
  • T81.711A Complication of renal artery following a procedure, not elsewhere classified, initial encounter
  • T81.711D Complication of renal artery following a procedure, not elsewhere classified, subsequent encounter
  • T81.711S Complication of renal artery following a procedure, not elsewhere classified, sequela
  • T81.718 Complication of other artery following a procedure, not elsewhere classifiedNon-billable
  • T81.718A Complication of other artery following a procedure, not elsewhere classified, initial encounter
  • T81.718D Complication of other artery following a procedure, not elsewhere classified, subsequent encounter
  • T81.718S Complication of other artery following a procedure, not elsewhere classified, sequela
  • T81.719 Complication of unspecified artery following a procedure, not elsewhere classifiedNon-billable
  • T81.719A Complication of unspecified artery following a procedure, not elsewhere classified, initial encounter
  • T81.719D Complication of unspecified artery following a procedure, not elsewhere classified, subsequent encounter
  • T81.719S Complication of unspecified artery following a procedure, not elsewhere classified, sequela
  • T81.72 Complication of vein following a procedure, not elsewhere classifiedNon-billable
  • T81.72XA Complication of vein following a procedure, not elsewhere classified, initial encounter
  • T81.72XD Complication of vein following a procedure, not elsewhere classified, subsequent encounter
  • T81.72XS Complication of vein following a procedure, not elsewhere classified, sequela
  • T81.8 Other complications of procedures, not elsewhere classifiedNon-billable
  • T81.81 Complication of inhalation therapyNon-billable
  • T81.81XA Complication of inhalation therapy, initial encounter
  • T81.81XD Complication of inhalation therapy, subsequent encounter
  • T81.81XS Complication of inhalation therapy, sequela
  • T81.82 Emphysema (subcutaneous) resulting from a procedureNon-billable
  • T81.82XA Emphysema (subcutaneous) resulting from a procedure, initial encounter
  • T81.82XD Emphysema (subcutaneous) resulting from a procedure, subsequent encounter
  • T81.82XS Emphysema (subcutaneous) resulting from a procedure, sequela
  • T81.83 Persistent postprocedural fistulaNon-billable
  • T81.83XA Persistent postprocedural fistula, initial encounter
  • T81.83XD Persistent postprocedural fistula, subsequent encounter
  • T81.83XS Persistent postprocedural fistula, sequela
  • T81.89 Other complications of procedures, not elsewhere classifiedNon-billable
  • T81.89XA Other complications of procedures, not elsewhere classified, initial encounter
  • T81.89XD Other complications of procedures, not elsewhere classified, subsequent encounter
  • T81.89XS Other complications of procedures, not elsewhere classified, sequela
  • T81.9 Unspecified complication of procedureNon-billable
  • T81.9XXA Unspecified complication of procedure, initial encounter
  • T81.9XXD Unspecified complication of procedure, subsequent encounter
  • T81.9XXS Unspecified complication of procedure, sequela

Clinical Terms in This Code Range

Definitions from the National Library of Medicine for conditions coded in the T81 range.

Cytokine Release Syndrome

A severe immune reaction characterized by excessive release of CYTOKINES. Symptoms include DYSPNEA; FEVER; HEADACHE; HYPOTENSION; NAUSEA; RASH; TACHYCARDIA; HYPOXIA; HYPERFERRITINEMIA, and MULTIPLE ORGAN FAILURE. It is associated with viral infections, SEPSIS; AUTOIMMUNE DISEASES and a variety of factors used in IMMUNOTHERAPY.

Endotoxemia

A condition characterized by the presence of ENDOTOXINS in the blood. On lysis, the outer cell wall of gram-negative bacteria enters the systemic circulation and initiates a pathophysiologic cascade of pro-inflammatory mediators.

Endotoxins

Toxins closely associated with the living cytoplasm or cell wall of certain microorganisms, which do not readily diffuse into the culture medium, but are released upon lysis of the cells.

Mastectomy

Surgical procedure to remove one or both breasts.

Postoperative Hemorrhage

Hemorrhage following any surgical procedure. It may be immediate or delayed and is not restricted to the surgical wound.

Seroma

Tumor-like sterile accumulation of serum in a tissue, organ, or cavity. It results from a tissue insult and is the product of tissue inflammation. It most commonly occurs following MASTECTOMY.

Subcutaneous Emphysema

Presence of air or gas in the subcutaneous tissues of the body.

Tetanus

A disease caused by tetanospasmin, a powerful protein toxin produced by CLOSTRIDIUM TETANI. Tetanus usually occurs after an acute injury, such as a puncture wound or laceration. Generalized tetanus, the most common form, is characterized by tetanic muscular contractions and hyperreflexia. Localized tetanus presents itself as a mild condition with manifestations restricted to muscles near the wound. It may progress to the generalized form.

Trismus

Spasmodic contraction of the masseter muscle resulting in forceful jaw closure. This may be seen with a variety of diseases, including TETANUS, as a complication of radiation therapy, trauma, or in association with neoplastic conditions.

About the T81 Code Range

ICD-10 code section T81 covers a broad range of complications that arise specifically from medical procedures, but are not classified elsewhere. These codes are used to document and classify adverse events such as postprocedural shock, wound disruptions, infections, reactions to foreign substances, and complications due to foreign bodies left in the body after procedures.

This section includes specific codes for various types of shock occurring after procedures, including T81.10XA for postprocedural shock and its synonyms like postoperative shock and shock due to and following procedure. It also addresses disruptions of surgical wounds, such as dehiscence coded under T81.30XA, with synonyms like wound dehiscence and dehiscence of surgical wound. Infections that develop after surgery are captured here too, with distinctions between superficial (T81.41XA), deep incisional (T81.42XA), and organ/space infections (T81.43XA). Codes for complications from foreign bodies accidentally left in the patient, such as retained surgical items, include T81.500A and related codes, highlighting issues like postoperative foreign body and foreign object left during surgical operation. Additionally, codes under this section track acute and aseptic reactions to foreign substances left during procedures, and vascular complications affecting arteries and veins following surgery. For medical coders and healthcare providers, this ICD-10 code section is critical for accurately reporting complications like postprocedural septic shock, surgical wound infections, and foreign body complications, ensuring clear communication and proper documentation.

Questions About This Page

How many billable codes are in the T81 range?

Of the 335 codes in this range, 240 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.

What does the T81 range classify?

The range classifies complications of procedures, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

All ICD-10-CM ChaptersAll of Chapter 19ICD-10-CM Code LookupMS-DRG ReferenceMedicare Code EditsPOA Exempt Codes

Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.