T81.329S — Deep disruption or dehiscence of operation wound, unspecified, sequela
Is T81.329S billable?
Yes, but T81.329S is an unspecified code. T81.329S is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T81.329S is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting T81.329S.
T81.329S at a glance
| Code | T81.329S |
|---|---|
| Description | Deep disruption or dehiscence of operation wound, unspecified, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in T81.329S?
In T81.329S, the 7th character S means sequela. The 7th character is required for T81.329S to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T81.329S group to?
T81.329S sits in MDC 21 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 922Other Injury, Poisoning and Toxic Effect Diagnoses with MCCmedical
- 923Other Injury, Poisoning and Toxic Effect Diagnoses without MCCmedical
How is T81.329S listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T81.329, the nearest indexed parent of T81.329S. Use them to find the family, then select the specific code.
- Dehiscence › operation wound NEC › deep (of)
- Dehiscence › operation wound NEC › internal operation wound (of)
- Suture › burst › internal operation wound
- Disruption › wound › operation › deep (of)
- Disruption › wound › operation › internal operation wound (of)
Inclusion terms
Alternative wording in documentation that is classified to T81.329S.
- Deep disruption or dehiscence of operation wound NOS
Excludes1 — never code together — inherited from T81.3
The conditions below can never be reported together with T81.329S on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from Chapter 19
Report an additional code alongside T81.329S to fully describe the condition. T81.329S is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T80-T88
Report an additional code alongside T81.329S to fully describe the condition. T81.329S is sequenced first.
Use additional code — inherited from T81
Report an additional code alongside T81.329S to fully describe the condition. T81.329S is sequenced first.
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T81.329S, but a patient may have both at the same time. When documentation supports it, T81.329S and the excluded code may both be reported.
Excludes2 — not included here — inherited from T80-T88
The conditions below are not part of T81.329S, but a patient may have both at the same time. When documentation supports it, T81.329S and the excluded code may both be reported.
- any encounters with medical care for postprocedural conditions in which no complications are present, such as:
- artificial opening status (Z93.-)
- closure of external stoma (Z43.-)
- fitting and adjustment of external prosthetic device (Z44.-)
- burns and corrosions from local applications and irradiation (T20-T32)
- complications of surgical procedures during pregnancy, childbirth and the puerperium (O00-O9A)
- mechanical complication of respirator [ventilator] (J95.850)
- poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4 or 6)
- postprocedural fever (R50.82)
- specified complications classified elsewhere, such as:
- cerebrospinal fluid leak from spinal puncture (G97.0)
- colostomy malfunction (K94.0-)
- disorders of fluid and electrolyte imbalance (E86-E87)
- functional disturbances following cardiac surgery (I97.0-I97.1)
- intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-)
- ostomy complications (J95.0-, K94.-, N99.5-)
- postgastric surgery syndromes (K91.1)
- postlaminectomy syndrome NEC (M96.1)
- postmastectomy lymphedema syndrome (I97.2)
- postsurgical blind-loop syndrome (K91.2)
- ventilator associated pneumonia (J95.851)
Excludes2 — not included here — inherited from T81
The conditions below are not part of T81.329S, but a patient may have both at the same time. When documentation supports it, T81.329S and the excluded code may both be reported.
- 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)
How long has T81.329S existed?
T81.329S first appears in FY2025.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.