T81.6
Acute reaction to foreign substance accidentally left during a procedure
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 15 never code together
T81.6code
T81code
Excludes2
- complications following immunization (T88.0-T88.1)T88.0-T88.1
- complications following infusion, transfusion and therapeutic injection (T80.-)T80.-
- complications of transplanted organs and tissue (T86.-)T86.-
- specified complications classified elsewhere, such as:
- complication of prosthetic devices, implants and grafts (T82-T85)T82-T85
- dermatitis due to drugs and medicaments (L23.3, L24.4, L25.1, L27.0-L27.1)L23.3L24.4L25.1L27.0-L27.1
- endosseous dental implant failure (M27.6-)M27.6-
- floppy iris syndrome (IFIS) (intraoperative) H21.81H21.81
- 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.-)D78.-E36.-E89.-G97.3-G97.4H59.3-H59.-H95.2-H95.3I97.4-I97.5J95K91.-L76.-M96.-N99.-
- ostomy complications (J95.0-, K94.-, N99.5-)J95.0-K94.-N99.5-
- plateau iris syndrome (post-iridectomy) (postprocedural) H21.82H21.82
- poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4)T36-T65
Excludes2 — not included here, but the patient may have both. Code both when documented.
7th character 3
A initial encounter
D subsequent encounter
S sequela
Instructional notes 4
T81code
Use additional code
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)T36-T50
S00-T88chapter
Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here filed at null
No alphabetic index entry points at this code.
Alongside this code 7 same parent — T81
T81.1 Postprocedural shock category T81.3 Disruption of wound, not elsewhere classified category T81.4 Infection following a procedure category T81.5 Comp of foreign body acc left in body following procedure category T81.7 Vascular complications following a procedure, NEC category T81.8 Other complications of procedures, not elsewhere classified category T81.9 Unspecified complication of procedure category
Subordinate codes 3
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.