What does ICD-10 code T81 mean?

ICD-10 code T81 is the standardized code used for complications of procedures, not elsewhere classified in medical records and coding systems.

When is ICD-10 code T81 used?

Doctors, hospitals, and insurers may use ICD-10 code T81 when recording complications of procedures, not elsewhere classified in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code T81 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code T81: Complications of procedures, not elsewhere classified

Name: ICD-10 Code T81: Complications of procedures, not elsewhere classified
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:45:15.591Z

T81 is an ICD-10 diagnosis entry used to group records related to Complications of procedures, not elsewhere classified. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Injury, poisoning and certain other consequences of external causes (S00-T88).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Injury, poisoning and certain other consequences of external causes (S00-T88).

When is it used?

May be used when a clinician documents complications of procedures, not elsewhere classified in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

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

block

T07-T88Injury, poisoning and certain other consequences of external causes

block

T80-T88Complications of surgical and medical care, not elsewhere classified

currentT80-T88

Official coding notes

Applicable to

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Excludes2 (may code together if documented)

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)

7th character notes

The appropriate 7th character is to be added to each code from category T81
initial encounter
subsequent encounter
sequela

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

Emergency Medicine SpecialistOrthopedic Specialist

Sibling codes

T80Complications following infusion, transfusion and therapeutic injection T82Complications of cardiac and vascular prosthetic devices, implants and grafts T83Complications of genitourinary prosthetic devices, implants and grafts T84Complications of internal orthopedic prosthetic devices, implants and grafts T85Complications of other internal prosthetic devices, implants and grafts T86Complications of transplanted organs and tissue T87Complications peculiar to reattachment and amputation T88Other complications of surgical and medical care, not elsewhere classified

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

T81

Replacement codes

T81.9 — Unspecified complication of procedure

Common synonyms

Complications of procedures, not elsewhere classified

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.