T81.329A Deep disruption or dehiscence of operation wound, unspecified, initial encounter

Billable ICD-10-CM code, FY2026.

Built from T81.329 with 7th character A (initial encounter).

Applies from T81 Complications of procedures, not elsewhere classified

Excludes2 (not included here)

• 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 note

• The appropriate 7th character is to be added to each code from category T81

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from T81.3 Disruption of wound, not elsewhere classified

Applicable to

• Disruption of any suture materials or other closure methods

Excludes1 (never code together)

• breakdown (mechanical) of permanent sutures (T85.612)
• displacement of permanent sutures (T85.622)
• disruption of cesarean delivery wound (O90.0)
• disruption of perineal obstetric wound (O90.1)
• mechanical complication of permanent sutures NEC (T85.692)

Applies from T81.329 Deep disruption or dehiscence of operation wound, unspecified

Applicable to

• Deep disruption or dehiscence of operation wound NOS

Code annotations containing back-references to T81.329A

Back-references to T81.32

• Code Also: J86.0 Pyothorax with fistula (", if applicable, disruption of internal operation (surgical) wound (T81.32-)")
• Code Also: K31.6 Fistula of stomach and duodenum (", if applicable, disruption of internal operation (surgical) wound (T81.32-)")
• Code Also: K63.2 Fistula of intestine (", if applicable, disruption of internal operation (surgical) wound (T81.32-)")
• Code Also: K82.3 Fistula of gallbladder (", if applicable, disruption of internal operation (surgical) wound (T81.32-)")
• Code Also: T81.4 Infection following a procedure (", if applicable, disruption of internal operation (surgical) wound (T81.32-)")
• Code Also: T81.83 Persistent postprocedural fistula (", if applicable, disruption of internal operation (surgical) wound (T81.32-)")

Back-references to T81

• Code First: J98.51 Mediastinitis ("underlying condition, if applicable, such as postoperative mediastinitis (T81.-)")
• Type 2 Excludes: T78 Adverse effects, not elsewhere classified ("complications of surgical and medical care NEC (T80-T88)")
• Type 2 Excludes: T79 Certain early complications of trauma, not elsewhere classified ("complications occurring during or following medical procedures (T80-T88)")
• Type 2 Excludes: T79 Certain early complications of trauma, not elsewhere classified ("complications of surgical and medical care NEC (T80-T88)")
• Type 2 Excludes: T88 Other complications of surgical and medical care, not elsewhere classified ("complication following procedure NEC (T81.-)")

Diagnosis Index entries for T81.329A

• Dehiscence (of) › operation wound NEC › deep
• Dehiscence (of) › operation wound NEC › internal operation wound (deep)
• Disruption (of) › wound › operation › deep
• Disruption (of) › wound › operation › internal operation wound (deep)
• Suture › burst (in operation wound) › internal operation wound

Nearby codes

• T81.328 Disruption or dehiscence of closure of other specified internal operation (surgical) wound
• 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, unspecified
• T81.329A Deep disruption or dehiscence of operation wound, unspecified, initial encounter (this code)
• 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 repair
• T81.33XA Disruption of traumatic injury wound repair, initial encounter
• T81.33XD Disruption of traumatic injury wound repair, subsequent encounter