T81.520D

Obstruction due to foreign body accidentally left in body following surgical operation, subsequent encounter

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 14 never code together

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)L23.3 L24.4 L25.1 L27.0-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-G97.4 H59.3-H59.-H95.2-H95.3 I97.4-I97.5 J95 K91.-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

S00-T88chapter

Excludes2

birth trauma (P10-P15)P10-P15
obstetric trauma (O70-O71)O70-O71

Excludes2 — not included here, but the patient may have both. Code both when documented.

7th character 3

A initial encounter

D subsequent encounter this code

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 1 filed at T81.520

The index files this at T81.520. The tabular extends it — laterality, staging, or the 7th character — so these entries lead to the family rather than to T81.520D exactly.

Foreign body
- accidentally left following a procedure T81.509
  - surgical operation T81.500
    - resulting in
      - obstruction T81.520

Alongside this code 2 same parent — T81.520

T81.520A Obst due to fb acc left in body fol surgical operation, init T81.520S Obst due to fb acc left in body fol surgical op, sequela

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: yes
Code set: FY2026
Parent: T81.520
Block: T07-T88
Siblings: 2

Present FY2024–FY2027.