Excludes1 pair
T79.4- vs T88.2-
T79.4 and T88.2 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.
The official note, declared on T79.4
shock due to anesthesia (T88.2)
T79.4
Traumatic shock
Not billable
- Chapter 19
- Injury, poisoning and certain other consequences of external causes
- Section
- T79
Use when the record says
- Shock (immediate) (delayed) following injury
Indexed under
- Feeble rapid pulse due to shock following injury
- Decrease › respiration, due to shock following injury
- Hypovolemia › traumatic (shock)
- Pulse › feeble, rapid due to shock following injury
- Rapid › feeble pulse, due to shock, following injury
T88.2
Shock due to anesthesia
Not billable
- Chapter 19
- Injury, poisoning and certain other consequences of external causes
- Section
- T80-T88
Indexed under
- Anesthesia, anesthetic › shock (due to)
- Collapse › lung › pressure due to anesthesia or other sedation (general) (local)
- Complication › anesthesia, anesthetic › shock
- Shock › anesthetic › correct substance properly administered
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027