T81.33XA (Disruption of traumatic injury wound repair, initial encounter) compared with T81.33XD (Disruption of traumatic injury wound repair, subsequent encounter), from the official CMS tabular data. T81.33XA and T81.33XD code the same injury at a different phase of treatment.
Same underlying diagnosis, different encounter phase.
The 7th character records the phase of care for the encounter being coded, so a single encounter takes one of these characters, not several. Review whether both phases belong on the same episode of care.
Source: ICD-10-CM Official Guidelines, Section I.C.19.a
Same injury, other encounter phase. T81.33XA and T81.33XD code the same injury at a different phase of treatment, set by the 7th character.
The 7th character records the type of care given at the encounter being coded (ICD-10-CM Official Guidelines, Section I.C.19.a), so one encounter takes one of these, not both.
| T81.33XADisruption of traumatic injury wound repair, initial encounter | T81.33XDDisruption of traumatic injury wound repair, subsequent encounter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Disruption of traumatic injury wound repair, initial encounter is a billable ICD-10-CM diagnosis code (T81.33A). | Disruption of traumatic injury wound repair, subsequent encounter is a billable ICD-10-CM diagnosis code (T81.33D). |
| 7th character | The appropriate 7th character is to be added to each code from category T81 | The appropriate 7th character is to be added to each code from category T81 |
| Includes | Disruption or dehiscence of closure of traumatic laceration (external) (internal) | Disruption or dehiscence of closure of traumatic laceration (external) (internal) |
| Use additional code | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication code to identify devices involved and details of circumstances (Y62-Y82) | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication code to identify devices involved and details of circumstances (Y62-Y82) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources