T88.52XA (Failed moderate sedation during procedure, initial encounter) compared with T88.52XD (Failed moderate sedation during procedure, subsequent encounter), from the official CMS tabular data. T88.52XA and T88.52XD 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. T88.52XA and T88.52XD 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.
| T88.52XAFailed moderate sedation during procedure, initial encounter | T88.52XDFailed moderate sedation during procedure, 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 | Failed moderate sedation during procedure, initial encounter is a billable ICD-10-CM diagnosis code (T88.52A). | Failed moderate sedation during procedure, subsequent encounter is a billable ICD-10-CM diagnosis code (T88.52D). |
| 7th character | The appropriate 7th character is to be added to each code from category T88 | The appropriate 7th character is to be added to each code from category T88 |
| Includes | Failed conscious sedation during procedure | Failed conscious sedation during procedure |
| Use additional code | code for adverse effect, if applicable, to identify drug (T41.- with fifth or sixth character 5) 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 for adverse effect, if applicable, to identify drug (T41.- with fifth or sixth character 5) 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 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources