Excludes1 pair
T75.4- vs T79.4-
T75.4 and T79.4 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
electric shock (T75.4)
T75.4
Electrocution
Not billable
- Chapter 19
- Injury, poisoning and certain other consequences of external causes
- Section
- T66-T78
Use when the record says
- Shock from electric current
- Shock from electroshock gun (taser)
Indexed under
- Electric current, electricity, effects (concussion) (fatal) (nonfatal) (shock)
- Electrocution
- Effect, adverse › electric current, electricity (shock)
- Electrocution › from electroshock gun (taser)
- Shock › electric
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
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